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10-GHz AlGaInAs/InP 1.55- \mu m Passively Mode-Locked Laser With Low Divergence Angle and Timing Jitter

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6 Author(s)
Lianping Hou ; Sch. of Eng., Univ. of Glasgow, Glasgow, UK ; Haji, M. ; Bocang Qiu ; Akbar, J.
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We present a 10-GHz 1.55-μm passively mode-locked laser based on a novel AlGalnAs/InP epitaxial structure with a three-quantum-well active layer incorporating a passive far-field reduction layer. The device generated 1.06 ps pulses with a state-of-art timing jitter value of 194 fs (4-80 MHz), and a radio-frequency linewidth of 2 kHz, while demonstrating a low divergence angle (14.7° × 27.3°) with a twofold butt coupling efficiency to a flat cleaved single-mode fiber, compared to conventional five-quantum-well mode-locked lasers.

Published in:

Photonics Technology Letters, IEEE  (Volume:23 ,  Issue: 15 )