Chinese Optics Letters, 2018, 16 (6): 060603, Published Online: Jul. 2, 2018   

4 × 20 GHz silica-based AWG hybrid integrated receiver optical sub-assemblies

Author Affiliations
1 State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
2 College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Abstract
Both the 4×20 GHz coarse wavelength division multiplexing and LAN-WDM receiver optical sub-assemblies (ROSAs) were developed. The ROSA package was hybrid integrated with a planar lightwave circuit arrayed waveguide grating (AWG) with 2% refractive index difference and a four-channel top-illuminated positive-intrinsic-negative photodetector (PD) array. The output waveguides of the AWG were designed in a multimode structure to provide flat-top optical spectra, and their end facet was angle-polished to form a total internal reflection interface to realize vertical coupling with a PD array. The maximum responsivity of ROSA was about 0.4 A/W, and its 3 dB bandwidth of frequency response was up to 20 GHz for each transmission lane. The hybrid integrated ROSA would be a cost-effective and easy-assembling solution for 100 GbE data center interconnections.

Chaoyi Li, Junming An, Jiashun Zhang, Liangliang Wang, Jianguang Li, Yue Wang, Xiaojie Yin, Hongjie Wang, Yuanda Wu. 4 × 20 GHz silica-based AWG hybrid integrated receiver optical sub-assemblies[J]. Chinese Optics Letters, 2018, 16(6): 060603.

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