Efficient and Optical Feedback Tolerant Hybrid Laser Design for Silicon Photonics Applications
IEEE Journal of Selected Topics in Quantum Electronics(2020)
摘要
We present a design of a tunable hybrid laser based on III-V Reflective Semiconductor Optical Amplifier (RSOA) and Silicon Photonics (SiPh) external mirror that represents a good trade off between high Wall-Plug Efficiency (WPE) and high tolerance to optical feedback caused by unwanted back reflections from the rest of the SiPh chip. The sensitivity to optical feedback of different configurations, an important issue in many SiPh applications, is evaluated through the calculation of the critical feedback level based on an effective Lang-Kobayashi model and the main results are validated through numerical simulations of laser dynamics. We conclude that hybrid lasers with long effective external cavities typically designed to reduce the laser linewidth can be also exploited to improve the tolerance to spurious optical feedback.
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关键词
Laser feedback,Optical feedback,Waveguide lasers,Ring lasers,Laser tuning,Mirrors,Optical waveguides,Hybrid lasers,silicon photonics,optical feedback
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