Study On Optical Communications, Volume. 47, Issue 4, 50(2021)
High Efficiency Coupling Technology of Silicon Photonic Modulator and Single-mode Optical Fiber
Due to the small mode field of silicon photonic chips, the large coupling loss is a road-blocker for their applications. In this work, the coupling efficiency between a silicon photonic modulator chip and a single-mode optical fiber is investigated. The mode field matching theory is analyzed at first. Then the mode field test of silicon chip and single-mode optical fiber for coupling is carried out. Next, a low-cost coupling method to improve coupling efficiency is proposed. The experimental results show that the coupling efficiency of the single-mode optical fiber and silicon photonic chip reaches 70%. The optical module is made by using this scheme, and the 4 Pulse Amplitude Modulation (PAM4) eye diagram is tested. The experimental results show that better eye diagram can be obtained.
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TAN Zhong-xiang, FU Yan-feng, HU Sheng-lei, WANG Ning, ZHANG De-chuan, XIAO Xi. High Efficiency Coupling Technology of Silicon Photonic Modulator and Single-mode Optical Fiber[J]. Study On Optical Communications, 2021, 47(4): 50
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Received: Nov. 9, 2020
Accepted: --
Published Online: Nov. 6, 2021
The Author Email: Zhong-xiang TAN (506453593@qq.com)