Polarization Diversity Circuit Using Photonic Crystal Waveplates for 1.2-μm Quantum Dot Semiconductor Optical Amplifiers

Silica-based polarization diversity circuit for QD-SOA operating in T-band was fabricated. By connecting polarization diversity circuits to QD-SOA chip, the polarization dependent gain of less than 0.8 dB and the optical gain of 3.2 dB were achieved.

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