Open AccessLow-κ, narrow linewidth III-V-on-SOI distributed feedback lasers with backside sampled Bragg gratings
Author(s) -
Joan Manel Ramírez,
Amin Souleiman,
Pierre Fanneau de La Horie,
Delphine Néel,
Nicolas Vaissière,
Valentin Ramez,
Claire Besançon,
Stéphane Malhouitre,
A. Wilk,
K. Merghem,
J. Décobert,
Karim Hassan,
David Bitauld
Publication year - 2022
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.469735
Subject(s) - laser linewidth , optics , extinction ratio , materials science , fiber bragg grating , silicon on insulator , laser , fiber laser , distributed feedback laser , semiconductor laser theory , single mode optical fiber , bandwidth (computing) , optoelectronics , physics , silicon , telecommunications , wavelength , computer science
We demonstrate a heterogeneously integrated III-V-on-SOI distributed feedback laser with a low grating strength (κ < 40 cm -1 ) and a narrow linewidth of Δν = 118 kHz. The laser operates single mode with a side-mode suppression ratio over 45 dB, provides a single-sided waveguide-coupled output power of 22 mW (13.4 dBm) and has a wall-plug efficiency of 17%. The dynamic characteristics were also evaluated, obtaining an intrinsic 3 dB modulation bandwidth of 14 GHz and a photon lifetime of 8 ps. Large-signal intensity modulation using a 2 31 -1 PRBS pattern length revealed open eye diagrams up to 25 Gb/s and a penalty on the dynamic extinction ratio lower than 1 dB after transmission over a 2 km standard single mode optical fiber.