Numerical simulation and temporal characterization of dual-pumped microring-resonator-based optical frequency combs

Xiaohong Hu; Weiqiang Wang; Leiran Wang; Wenfu Zhang; Yishan Wang; Wei Zhao

doi:doi:10.1364/PRJ.5.000207

Photonics Research, 2017, 5 (3): 03000207, Published Online: Oct. 9, 2018

Numerical simulation and temporal characterization of dual-pumped microring-resonator-based optical frequency combs Download： 904次

Xiaohong Hu ^1,2Weiqiang Wang ^1,2,3Leiran Wang ^1,2Wenfu Zhang ^1,2,3,4,*Yishan Wang ^1,5,*Wei Zhao ¹

Author Affiliations

¹ State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi’an 710119, China

² University of Chinese Academy of Sciences, Beijing 100049, China

³ China-UK Joint Research Center on Micro/Nano Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi’an 710119, China

⁴ e-mail: wfuzhang@opt.ac.cn

⁵ e-mail: Yshwang@opt.ac.cn

Figures & Tables

Fig. 1. (a) Schematic diagram of dual-pumped OFC generation system. The two pump fields are coupled into a four-port MRR through the input port, and the generated OFC is measured at the drop port. (b) Energy diagram of non-degenerate FWM in the MRR.

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Fig. 2. Calculated GVD curve of the MRR used in the experiment.

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Fig. 3. Numerically calculated 40 FSR comb spectra (left column) and field profiles (right column) at different pump powers. For clear viewing, only a part of the field profile is shown at each pump power. A cosine fit to the field intensity profile is exhibited as the blue circles.

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Fig. 4. Schematic diagram of the self-locked and dual-pumped OFC generation system. ISO, isolator; DL, delay line; D-PBF, dual passbands filter; OSA, optical spectrum analyzer; PM, power meter.

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Fig. 5. Experimentally measured (a) 10 FSR comb spectra and (b) the corresponding autocorrelation trace.

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Fig. 6. (a) 40 FSR comb spectra. The experimentally measured and numerically calculated comb spectra based on Eq. (1a) are represented by the black solid and red dashed lines, respectively. (b) MRR output temporal intensity waveform measured with a fast photodetector. The inset shows the details of the temporal waveform resulting from the supermode beating.

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Table1. Physical Parameters of the MRR

Item	Symbol	Value
Quality factor	$Q$	$1.45 \times 10^{6}$
Cavity length	$L$	3.72 mm
Mode field area	$A_{eff}$	$\sim 4.8 {μm}^{2}$
Mode linewidth	$κ$	$\sim 134 MHz$
Refractive index	$n_{0}$	1.6
FSR	FSR	49 GHz
Finesse	F	$\sim 367$
Nonlinearity	$γ$	$110 W^{- 1} {km}^{- 1}$
GVD	$β_{2}$	$- 25 {ps}^{2} / km$
Linear propagation loss	$α_{dB}$	$\sim 0.06 dB / cm$
Power coupling coefficient	$T_{c}$	$1.2 \times 10^{- 2}$

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Xiaohong Hu, Weiqiang Wang, Leiran Wang, Wenfu Zhang, Yishan Wang, Wei Zhao. Numerical simulation and temporal characterization of dual-pumped microring-resonator-based optical frequency combs[J]. Photonics Research, 2017, 5(3): 03000207.

Numerical simulation and temporal characterization of dual-pumped microring-resonator-based optical frequency combs Download： 904次

Fig. 1. (a) Schematic diagram of dual-pumped OFC generation system. The two pump fields are coupled into a four-port MRR through the input port, and the generated OFC is measured at the drop port. (b) Energy diagram of non-degenerate FWM in the MRR.

Fig. 2. Calculated GVD curve of the MRR used in the experiment.

Fig. 3. Numerically calculated 40 FSR comb spectra (left column) and field profiles (right column) at different pump powers. For clear viewing, only a part of the field profile is shown at each pump power. A cosine fit to the field intensity profile is exhibited as the blue circles.

Fig. 4. Schematic diagram of the self-locked and dual-pumped OFC generation system. ISO, isolator; DL, delay line; D-PBF, dual passbands filter; OSA, optical spectrum analyzer; PM, power meter.

Fig. 5. Experimentally measured (a) 10 FSR comb spectra and (b) the corresponding autocorrelation trace.

Table1. Physical Parameters of the MRR

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Numerical simulation and temporal characterization of dual-pumped microring-resonator-based optical frequency combs Download： 904次

Fig. 1. (a) Schematic diagram of dual-pumped OFC generation system. The two pump fields are coupled into a four-port MRR through the input port, and the generated OFC is measured at the drop port. (b) Energy diagram of non-degenerate FWM in the MRR.

Fig. 2. Calculated GVD curve of the MRR used in the experiment.

Fig. 3. Numerically calculated 40 FSR comb spectra (left column) and field profiles (right column) at different pump powers. For clear viewing, only a part of the field profile is shown at each pump power. A cosine fit to the field intensity profile is exhibited as the blue circles.

Fig. 4. Schematic diagram of the self-locked and dual-pumped OFC generation system. ISO, isolator; DL, delay line; D-PBF, dual passbands filter; OSA, optical spectrum analyzer; PM, power meter.

Fig. 5. Experimentally measured (a) 10 FSR comb spectra and (b) the corresponding autocorrelation trace.

Table1. Physical Parameters of the MRR

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