Open AccessMonolithically integrated low linewidth comb source using gain switched slotted Fabry-Perot lasers
Author(s) -
Justin K. Alexander,
Padraic E. Morrissey,
Hua Yang,
Mingqi Yang,
Philip J. Marraccini,
Brian Corbett,
Frank Peters
Publication year - 2016
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.24.007960
Subject(s) - laser linewidth , optics , materials science , laser , fabry–pérot interferometer , optoelectronics , wavelength , semiconductor laser theory , tunable laser , physics
A monolithically integrated low linewidth optical comb is demonstrated by gain switching of a three-section laser device. The device consists of a slave and master section separated by a shared slotted mirror section. Wavelength tunability has been demonstrated by varying the electrical bias of each section. The number of comb lines is shown to almost double with the addition of optical injection from the master section into the slave. The unmodulated device has a full width half max linewidth of ∼ 500 kHz, while the comb line set were measured to be ∼ 600 kHz, with little degradation as a result of gain switching. The FSR (free spectral range) of the demonstrated comb is 4 GHz, which is tunable within the bandwidth of the device, with a central wavelength of 1580.3 nm.