Journal
IEEE JOURNAL OF QUANTUM ELECTRONICS
Volume 52, Issue 11, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JQE.2016.2608800
Keywords
Frequency combs; mode-locked lasers; phase noise; quantum-dash (qdash); relative intensity noise (rin); semiconductor lasers
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Funding
- EU FP 7 BIG PIPES Project
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We investigate the amplitude and phase noise of an optical frequency comb based on InAs/InP quantum-dash mode-locked laser. The laser demonstrates low relative intensity noise (<-125 dB/Hz) and phase noise in the passive modelocking regime. By actively mode-locking the laser, we observe a reduction in the flicker FM noise and timing jitter, as a result of which the optical linewidth decreases, and hence the effective bandwidth compatible with optical coherent systems increases by more than 50% to similar to 1.1 THz.
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