Phase noise study of laser diodes with external optical feedback for digital coherent communications
international semiconductor laser conference, 2016.
We evaluated external optical feedback effect for TDA-CSG-DR tunable laser by real-time phase variation measurements. The phase variation slower than feedback delay was significantly reduced without imperiling laser stability, and the noise level obtained for 50–100 MHz was ∼17 kHz 2 /kHz as calculated results for an equivalent Fabry-Pero...More
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