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Si-photonics optical transmitter is fabricated using quantum dot laser (QDL) light sources for multimode-fiber (MMF) transmission. Error free operation at 25 Gbps over 70°C is attributed to superior high-temperature characteristics of the QDL and a wider range of acceptable beam directions for coupling to MMF using a grating coupler (GC).
We discuss an isolator-free Si-photonics transmitter with a quantum-dot laser. A high tolerance to optical feedback of −30-dB against near-end reflections was successfully achieved. Furthermore, we also demonstrated the error-free operation of an optical I/O core at 25 Gbps.
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