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Photonics Research 第3卷 第5期

Author Affiliations
Abstract
1 Materials Department, University of California Santa Barbara, Santa Barbara, California 93106, USA
2 Department of Electrical and Computer Engineering, University of California Santa Barbara, Santa Barbara,California 93106, USA
We review recent advances in the field of quantum dot lasers on silicon. A summary of device performance, reliability, and comparison with similar quantum well lasers grown on silicon will be presented. We consider the possibility of scalable, low size, weight, and power nanolasers grown on silicon enabled by quantum dot active regions for future short-reach silicon photonics interconnects.
Semiconductor lasers Semiconductor lasers Optoelectronics Optoelectronics 
Photonics Research
2015, 3(5): 050000B1
Author Affiliations
Abstract
Advanced Photonic Center, Southeast University, Nanjing 210096, China
“Giant” CdSe/CdS core/shell nanocrystals (NCs) were synthesized with thick CdS shell (15 monolayers), and the x-ray diffraction (XRD) measurement indicates there is a zinc blende phase in the thick CdS shell, whereas it transformed into wurtzite phase under 5 min radiation with a 400 nm, 594 μJ∕cm2 femtosecond (fs) laser beam. The evolution of the NCs’ spontaneous emission under the fs laser radiation was recorded with a Hamamatsu streak camera. The as-synthesized NCs exhibit an amplified spontaneous emission (ASE) at 530 nm, which comes from a bulk-like CdS shell due to the interfacial potential barrier, which could slow down the relaxation of holes from the shell to the core. After being annealed by an fs laser, the ASE of the g-NCs is transferred from a bulk-like CdS shell to a quantum-confined CdSe core because the phase transformation determined with the XRD measurement could remove the interfacial barrier. Besides the ASE at 643 nm, two shorter-wavelength ASE peaks at 589 and 541 nm, corresponding to optical transitions of the second (1P) and third (1D) electron quantization shells of the CdSe core, also appear, thus indicating that Auger recombination is effectively suppressed.materials
Laser materials processing Laser materials processing Semiconductor lasers Semiconductor lasers Laser Laser 
Photonics Research
2015, 3(5): 05000200
Author Affiliations
Abstract
1 Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, China
2 Department of Electronic and Information Engineering, Shenzhen Graduate School,Harbin Institute of Technology, Shenzhen, China
A quasi-two-dimensional layer of MoS2 was placed on top of a silicon optical waveguide to form a MoS2–silicon hybrid structure. Chirped pulse self-phase modulation measurements were carried out to determine the optical Kerr nonlinearity of the structure. The observed increase in the spectral broadening of the optical pulses in the MoS2–silicon waveguide compared with the silicon waveguides indicated that the third-order nonlinear effect in MoS2 is about 2 orders of magnitude larger than that in silicon. The measurements show that MoS2 has an effective optical Kerr coefficient of about 1.1 × 10?16 m2∕W. This work reveals the potential application of MoS2 to enhance the nonlinearity of hybrid silicon optical devices.
Nonlinear optics Nonlinear optics Kerr effect Kerr effect Nonlinear optics Nonlinear optics materials materials Nonlinear optical materials Nonlinear optical materials 
Photonics Research
2015, 3(5): 05000206
Author Affiliations
Abstract
1 State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Shanghai 201800, China
2 IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China
The generation of multicolored sidebands with the spectrum from 377 to 970 nm in a 0.5-mm-thick N-WG280 Schott glass based on a cascaded four-wave mixing (CFWM) process is demonstrated. The experimental setup is compact and economical. A pulse with a broadened spectrum from 670 to 900 nm is generated by utilizing two 0.18-mm-thick fused silica glass plates and is used to provide two input beams for the CFWM process. The new frequency components generated from the self-phase modulation effect in the two thin glass plates contribute to the broadening of the total spectral range of the generated multicolored sidebands.
Nonlinear optics Nonlinear optics four-wave mixing four-wave mixing Ultrafast nonlinear optics Ultrafast nonlinear optics 
Photonics Research
2015, 3(5): 05000210
Author Affiliations
Abstract
1 Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education, School of Physics and Electronics,Hunan University, Changsha 410082, China
2 SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University,Shenzhen 518060, China
Gapless linear energy dispersion of graphene endows it with unique nonlinear optical properties, including broadband nonlinear absorption and giant nonlinear refractive index. Herein, we experimentally observed that fewlayers graphene has obvious nonlinear absorption and large nonlinear refraction, as investigated by the Z-scan technique in the mid-infrared (mid-IR) regime. Our study may not only, for the first time to our knowledge, verify the giant nonlinear refractive index of graphene (~10?7 cm2∕W) at the mid-IR, which is 7 orders of magnitude larger than other conventional bulk materials, but also provide some new insights for graphene-based mid-IR photonics, potentially leading to the emergence of several new conceptual mid-IR optoelectronics devices.
Nonlinear optical materials Nonlinear optical materials Optical properties Optical properties Kerr effect Kerr effect 
Photonics Research
2015, 3(5): 05000214
Author Affiliations
Abstract
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
In this paper, we present a mode-selective coupler based on a dual-core all-solid photonic bandgap fiber (AS-PBGF). Because they are all-solid, AS-PBGF-based mode converters are easier to splice to other fibers than those based on air-hole photonic crystal fibers. Mode conversions between the LP01 and LP11 modes, LP01 and LP21 modes, and LP01 and LP01 modes are obtained at the wavelength λ _ 1550 nm. The 3 dB wavelength bandwidth of these mode converters are 47.8, 20.3, and 20.3 nm, respectively.
Optical communications Optical communications Photonic crystal fibers Photonic crystal fibers 
Photonics Research
2015, 3(5): 05000220
Author Affiliations
Abstract
College of Optoelectronic Science and Engineering, National University of Defense Technology,Changsha, Hunan 410073, China
Core mode cutoff is a useful concept not only for a tapered single-core fiber (SCF) but also for a tapered multicore fiber (MCF) to realize cladding mode transmission. In this paper, cut-off conditions of either core mode for tapered SCFs or supermodes for MCFs are theoretically investigated. Rigorous analytical formulas are derived for the modes of SCF by a three-layer waveguide model, and an approximation formula of the cut-off condition is given for the LP01 mode. The supermodes of MCFs are analyzed by the coupling mode theory, and the cut-off condition is calculated by a numerical method. Simulation results show that the in-phase supermode of MCFs has a similar cut-off condition with that of SCF. Based on this property, a convenient approximate formula is given to estimate the cut-off condition of the in-phase supermode for tapered MCFs.
Fiber optics Fiber optics Fiber optics and optical communications Fiber optics and optical communications Microstructured fibers Microstructured fibers 
Photonics Research
2015, 3(5): 05000224
Author Affiliations
Abstract
Dipartimento di Ingegneria Dell’Informazione, Università degli Studi di Parma,Viale delle Scienze 181/A, Parma 43124, Italy
We study a nonlinear lossless polarizer (NLP), a fiber-based device able to control the polarization of an optical signal while preserving its energy. The NLP exploits the lossless polarization attraction (LPA) generated by the Kerr interactions between the signal and a fully polarized continuous wave (CW) pump. By employing a copropagating pump, we show that the effectiveness of LPA depends on the joint action of the Kerr nonlinearity and the mutual delay between signal and pump. We find the optimal pump wavelength placement and demonstrate that true LPA occurs only within a limited range of delay values. Thus, we explain why the copropagating NLP is more flexible and power efficient compared with the traditional counterpropagating NLP.
Nonlinear optics Nonlinear optics fibers fibers Polarization-selective devices Polarization-selective devices Nonlinear optical devices Nonlinear optical devices All-optical devices All-optical devices 
Photonics Research
2015, 3(5): 05000229
Author Affiliations
Abstract
Key Laboratory for Quantum Optics and Center for Cold Atom Physics of CAS, Shanghai Institute of Optics andFine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
We present a pseudo-inverse ghost imaging (PGI) technique which can dramatically enhance the spatial transverse resolution of pseudo-thermal ghost imaging (GI). In comparison with conventional GI, PGI can break the limitation on the imaging resolution imposed by the speckle’s transverse size on the object plane and also enables the reconstruction of an N-pixel image from much less than N measurements. This feature also allows high-resolution imaging of gray-scale objects. Experimental and numerical data assessing the performance of the technique are presented.
Quantum optics Quantum optics Image formation theory Image formation theory Image reconstruction techniques Image reconstruction techniques Speckle Speckle 
Photonics Research
2015, 3(5): 05000234
Author Affiliations
Abstract
1 Institute of Signal Processing & Transmission, Nanjing University of Posts and Telecommunications (NUPT),Nanjing 210003, China
2 2Key Lab of Broadband Wireless Communication and Sensor Network Technology, NUPT, Ministry of Education, Nanjing
Ghost imaging could be used to make a quick identification of orthogonal objects by means of photocurrent correlation measurements. In this paper, we extend the method to identify nonorthogonal objects. In the method, an object is illuminated by one photon from an entangled pair, and the other one is diffracted into a particular direction by a pre-established multiple-exposure hologram in the idler arm. By the correlation measurements, the nonorthogonal object in the signal arm could be discriminated within a very short time. The constraints for the identification of nonorthogonal objects are presented, which show that the nonorthogonal objects can be discriminated when the overlapping portion between any two objects is less than half of all the objects in the set. The numerical simulations further verify the result.
Image detection systems Image detection systems Quantum information and processing Quantum information and processing 
Photonics Research
2015, 3(5): 05000238
Author Affiliations
Abstract
1 Key Laboratory of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China,Hefei 230026, China
2 Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
An efficient method to mount a coupled silica microsphere and tapered fiber system is proposed and demonstrated experimentally. For the purpose of optomechanical studies, high-quality-factor optical (Qo ~ 108) and mechanical modes (Qm ~ 0.87 × 104<)sup>) are maintained after the mounting process. For the mounted microsphere, the coupling system is more stable and compact and, thus, is beneficial for future studies and applications based on optomechanical interactions. Especially, the packaged optomechanical system, which is tested in a vacuum chamber, paves the way toward quantum optomechanics research in cryostat.
Resonators Resonators Micro-optical devices Micro-optical devices Optomechanics Optomechanics 
Photonics Research
2015, 3(5): 05000243
Author Affiliations
Abstract
State Key Laboratory of Advanced Optical Communication System and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
We report femtosecond pulse generation in an amplifier similariton oscillator and a prechirped fiber amplifier system. The final output power is 1.4 W, and the fundamental repetition rate is 19.1 MHz after a single state fiber amplifier. The pulsewidth is 109 fs.
Ultrafast lasers Ultrafast lasers Lasers Lasers fiber fiber Optical amplifiers Optical amplifiers 
Photonics Research
2015, 3(5): 05000248
Author Affiliations
Abstract
1 School of Computer and Information, Hefei University of Technology, Hefei 230009, China
2 Department of Optoelectronics Science, Harbin Institute of Technology at Weihai, Weihai 264209, China
3 3Department of Physics, Harbin Institute of Technology, Harbin 150001, China
4 Department of Physics, Harbin Institute of Technology, Harbin 150001, China
In this paper, an ultrathin metalens has been proposed based on a holographic metasurface that consists of elongated apertures in 40 nm gold film, which exhibit intriguing properties such as on- and off-axis focusing and also can concentrate light into multiple, discrete spots for circularly polarized incident lights. First, the spatial transmission phase distributions of the designed metalens with arbitrary focusing can be obtained by computergenerated holography. Then, the discrete phase distributions can be continuously encoded by subwavelength nanoapertures with spatially varying orientations in gold film. The simulation results show that our designed metalens can work efficiently for different types of focusing. Finally, our metasurface shows superior broadband characteristics between 670 and 810 nm, and the corresponding focal lengths of the designed lenses also can be efficiently modulated with the incident lights at different wavelengths.
Metamaterials Metamaterials Optical devices Optical devices Phase modulation Phase modulation Optical resonators Optical resonators 
Photonics Research
2015, 3(5): 05000252
Author Affiliations
Abstract
Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics,Shandong Normal University, Jinan 250014, China
A molybdenum disulfide (MoS2) saturable absorber was fabricated by thermally decomposing the ammonium thiomolybdate. By using the MoS2 absorber, a compact diode-pumped passively Q-switched Tm:GdVO4 laser has been demonstrated. A stable Q-switched laser with repetition rates from 25.58 to 48.09 kHz was achieved. Maximum average output power was 100 mW with the shortest pulse duration of 0.8 μs. Maximum pulse energy is 2.08 μJ at center of 1902 nm.
Lasers Lasers Q-switched Q-switched Lasers Lasers solid-state solid-state Nonlinear optical materials Nonlinear optical materials 
Photonics Research
2015, 3(5): 05000256
Author Affiliations
Abstract
School of Information Science and Engineering, Shandong University, Jinan 250100, China
A Kerr-lens, mode-locked YVO4∕Nd:YVO4 laser coupled with an acousto-optic modulator (AOM) Q-switching near 1064 nm was employed to pump an intracavity KTiOPO4 (KTP) optical parametric oscillator. A subnanosecond signal wave near 1572 nm with low repetition rate was realized. At an AOM repetition rate of 8 kHz, the maximum output power was 165 mW. The highest average pulse energy, the shortest duration, and the highest peak power of a mode-locking signal pulse were estimated to be ~10.3 μJ, ~120 ps, and ~82 kW, respectively.
Nonlinear optics Nonlinear optics parametric processes parametric processes Ultrafast lasers Ultrafast lasers Kerr effect Kerr effect 
Photonics Research
2015, 3(5): 05000260
Author Affiliations
Abstract
1 Key Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
2 Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
In this paper, we develop a theoretical method based on ray optics to calculate the optical force and torque on a metallo-dielectric Janus particle in an optical trap made from a tightly focused Gaussian beam. The Janus particle is a 2.8 μm diameter polystyrene sphere half-coated with gold thin film several nanometers in thickness. The calculation result shows that the focused beam will push the Janus particle away from the center of the trap, and the equilibrium position of the Janus particle, where the optical force and torque are both zero, is located in a circular orbit surrounding the laser beam axis. The theoretical results are in good agreement qualitatively and quantitatively with our experimental observation. As the ray-optics model is simple in principle, user friendly in formalism, and cost effective in terms of computation resources and time compared with other usual rigorous electromagnetics approaches, the developed theoretical method can become an invaluable tool for understanding and designing ways to control the mechanical motion of complicated microscopic particles in various optical tweezers.
Optical tweezers or optical manipulation Optical tweezers or optical manipulation Optical confinement and manipulation Optical confinement and manipulation 
Photonics Research
2015, 3(5): 05000265
Author Affiliations
Abstract
1 State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, and Center for Quantum Information Technology, Peking University, Beijing 100871, China
2 State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
A 459 nm Faraday anomalous dispersion optical filter (FADOF) working at the side wings of the cesium 6S1∕2 → 7P1∕2 transition with weak oscillator strength is achieved. The transmittance of the higher side wing reaches 98% at a temperature of 179°C and magnetic field above 323 G. The experimental results coincide with the theoretical predictions in 1982 and 1995, which were not realized in experiments for over three decades. Due to its high transmittance, high accuracy, and narrow linewidth, the 459 nm FADOF can be applied in underwater optical communications, the building of active optical clocks, and laser frequency stabilization in active optical clocks.
Filters Filters Faraday effect Faraday effect Spectroscopy Spectroscopy atomic atomic 
Photonics Research
2015, 3(5): 05000275
Author Affiliations
Abstract
1 National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences,Nanjing University, Nanjing 210093, China
2 Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701, USA
We experimentally demonstrate high optical quality factor silica microdisk resonators on a silicon chip with large wedge angles by reactive ion etching. For 2-μm-thick microresonators, we have achieved wedge angles of 59°, 63°, 70°, and 79° with optical quality factors of 2.4 × 107, 8.1 × 106, 5.9 × 106, and 7.4 × 106, respectively, from ~80 μmdiameter microresonators in the 1550 nm wavelength band. Also, for 1-μm-thick microresonators, we have obtained an optical quality factor of 7.3 × 106 with a wedge angle of 74°.
Optical resonators Optical resonators Microcavity devices Microcavity devices 
Photonics Research
2015, 3(5): 05000279
Author Affiliations
Abstract
1 Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology,Hawthorn, VIC 3122, Australia
2 Department of Mechanical Engineering, Eindhoven University of Technology,Postbus 513, 5600MB Eindhoven, The Netherlands
3 Optoelectronics Research Centre, University of Southampton, Southampton, SO17 1BJ, UK
4 Melbourne Centre for Nanofabrication, 151 Wellington Road, Clayton, VIC 3168, Australia
5 Ecole Polytechnique Fédérale de Lausanne, Rue de la Maladiére 71b, CH—2002 Neuchatel, Switzerland
6 Center for Nanotechnology, King Abdulaziz University, Jeddah 21589, Saudi Arabia
A novel fluorescence lifetime imaging microscopy (FLIM) working with deep UV 240–280 nm wavelength excitations has been developed. UV-FLIM is used for measurement of defect-related fluorescence and its changes upon annealing from femtosecond laser-induced modifications in fused silica. This FLIM technique can be used with microfluidic and biosamples to characterize temporal characteristics of fluorescence upon UV excitation, a capability easily added to a standardmicroscope-based FLIM. UV-FLIMwas tested to show annealing of the defects induced by silica structuringwith ultrashort laser pulses. Frequency-domain fluorescencemeasurementswere converted into the time domain to extract long fluorescence lifetimes from defects in silica.
Microscopy Microscopy Ultraviolet Ultraviolet Laser materials processing Laser materials processing 
Photonics Research
2015, 3(5): 05000283
Author Affiliations
Abstract
1 Photonic Device Laboratory, Department of Electronic and Computer Engineering,The Hong Kong University of Science and Technology, Hong Kong, China
2 State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors,Chinese Academy of Sciences, P.O. Box 912, Beijing, China
We review the state of the art and our perspectives on silicon and hybrid silicon photonic devices for optical interconnects in datacenters. After a brief discussion of the key requirements for intra-datacenter optical interconnects, we propose a wavelength-division-multiplexing (WDM)-based optical interconnect for intra-datacenter applications. Following our proposed interconnects configuration, the bulk of the review emphasizes recent developments concerning on-chip hybrid silicon microlasers and WDM transmitters, and silicon photonic switch fabrics for intra-datacenters. For hybrid silicon microlasers andWDM transmitters, we outline the remaining challenges and key issues toward realizing low power consumption, direct modulation, and integration of multiwavelength microlaser arrays. For silicon photonic switch fabrics, we review various topologies and configurations of high-port-count N-by-N switch fabrics using Mach–Zehnder interferometers and microring resonators as switch elements, and discuss their prospects toward practical implementations with active reconfiguration. For the microring-based switch fabrics, we review recent developments of active stabilization schemes at the subsystem level. Last, we outline several large challenges and problems for silicon and hybrid silicon photonics to meet for intra-datacenter applications and propose potential solutions.Optoelectronics;Diode laser arrays;Diode lasers;Laser resonators
Optical interconnects Optical interconnects Integrated optics devices Integrated optics devices 
Photonics Research
2015, 3(5): 05000B10
Author Affiliations
Abstract
State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
We review current silicon photonic devices and their performance in connection with energy consumption. Four critical issues are identified to lower energy consumption in devices and systems: reducing the influence of the thermo-optic effect, increasing the wall-plug efficiency of lasers on silicon, optimizing energy performance of modulators, and enhancing the sensitivity of photodetectors. Major conclusions are (1) Mach–Zehnder interferometer-based devices can achieve athermal performance without any extra energy consumption while microrings do not have an efficient passive athermal solution; (2) while direct bonded III–V-based Si lasers can meet system power requirement for now, hetero-epitaxial grown III–V quantum dot lasers are competitive and may be a better option for the future; (3) resonant modulators, especially coupling modulators, are promising for low-energy consumption operation even when the power to stabilize their operation is included; (4) benefiting from high sensitivity and low cost, Ge/Si avalanche photodiode is the most promising photodetector and can be used to effectively reduce the optical link power budget. These analyses and solutions will contribute to further lowering energy consumption to meet aggressive energy demands in future systems.
Energy transfer Energy transfer Integrated optics devices Integrated optics devices Semiconductor lasers Semiconductor lasers Coupled resonators Coupled resonators Avalanche photodiodes (APDs) Avalanche photodiodes (APDs) 
Photonics Research
2015, 3(5): 05000B28
Author Affiliations
Abstract
1 Photonics Research Group INTEC Department, Ghent University-imec, Ghent 9000, Belgium
2 Centre for Nano and Biophotonics, Ghent University, Ghent, Belgium
3 University of California, Davis, California 95616, USA
4 Department of Molecular Biotechnology, Ghent University, Ghent, Belgium
5 imec, Kapeldreef 75, B-3001 Leuven, Belgium
6 Physics and Chemistry of Nanostructures, Ghent University, B-9000 Ghent, Belgium
There is a rapidly growing demand to use silicon and silicon nitride (Si3N4) integrated photonics for sensing applications, ranging from refractive index to spectroscopic sensing. By making use of advanced CMOS technology, complex miniaturized circuits can be easily realized on a large scale and at a low cost covering visible to mid-IR wavelengths. In this paper we present our recent work on the development of silicon and Si3N4-based photonic integrated circuits for various spectroscopic sensing applications. We report our findings on waveguide-based absorption, and Raman and surface enhanced Raman spectroscopy. Finally we report on-chip spectrometers and on-chip broadband light sources covering very near-IR to mid-IR wavelengths to realize fully integrated spectroscopic systems on a chip.
Photonic integrated circuits Photonic integrated circuits Integrated optics devices Integrated optics devices Sensors Sensors Nonlinear optics Nonlinear optics integrated optics integrated optics Spectroscopy Spectroscopy Quantum-well Quantum-well -wire and -dot devices -wire and -dot devices 
Photonics Research
2015, 3(5): 05000B47
Author Affiliations
Abstract
COBRA Research Institute, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600MB, The Netherlands
InP integrated photonics has become a critical enabler for modern telecommunications, and is poised to revolutionize data communications, precision metrology, spectrometry, and imaging. The possibility to integrate high-performance amplifiers, lasers, modulators, and detectors in combination with interferometers within one chip is enabling game-changing performance advances, energy savings, and cost reductions. Generic integration accelerates progress through the separation of applications from a common technology development. In this paper, we review the current status in InP integrated photonics and the efforts to integrate the next generation of high-performance functionality on a common substrate using the generic methodology.
Optoelectronics Optoelectronics Photonic integrated circuits Photonic integrated circuits 
Photonics Research
2015, 3(5): 05000B60
Author Affiliations
Abstract
1 Centre for Optical and Electromagnetic Research, State Key Laboratory for Modern Optical Instrumentation,Zhejiang University, Hangzhou 310058, China
2 Systems Research Laboratory at Hewlett-Packard Laboratories, Palo Alto, California 94304, USA
3 Centre for Optical and Electromagnetic Research, South China Academy of Advanced Optoelectronics,South China Normal University, Guangzhou 510006, China
We give an introduction for the background and motivation of the Integrated Photonics: Challenges and Perspectives feature. A very brief summary for the five invited review articles collected in this feature issue is also given.
Integrated optics Integrated optics Integrated optics materials Integrated optics materials Optoelectronics Optoelectronics 
Photonics Research
2015, 3(5): 05000IP1