Low noise performance of passively mode locked quantum-dash-based lasers under external optical feedback

Merghem, K.; Rosales, R.; Azouigui, S.; Akrout, A.; Martinez, A.; Lelarge, F.; Duan, G.-H.; Aubin, G.; Ramdane, A.
September 2009
Applied Physics Letters;9/28/2009, Vol. 95 Issue 13, p131111
Academic Journal
We report on a systematic investigation of the effect of external optical feedback on 17 GHz passively mode-locked two-section lasers based on InAs/InP quantum dashes emitting at 1.58 μm. Narrowing of mode-beating linewidth down to a record value of ∼500 Hz is demonstrated over a large operating range.


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