TM mode suppression property of DFB lasers with a narrow stripe region

1 September 1990

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters

Vol. 2 (9) , 612-613
https://doi.org/10.1109/68.59327

Abstract

The TM-mode suppressibility of DFB lasers with a narrow stripe region is investigated. A waveguide is designed to produce different phase shifts between the TE and TM modes. A threshold gain difference between the TE and TM modes is introduced by a phase shift difference of both modes. A TM and side mode suppression ratio of more than 40 dB is obtained under 1.8-Gb/s NRZ pseudorandom pulse modulation.

Keywords

LASER MODES
WAVEGUIDE LASERS
OPTICAL WAVEGUIDES
FIBER LASERS
PLANAR WAVEGUIDES
OPTICAL SIGNAL PROCESSING
PULSE MODULATION
LIGHT SOURCES
OPTICAL FIBERS

This publication has 2 references indexed in Scilit:

Analysis of TE/TM mode selectivity in DFB lasers with a phase-shift region
IEEE Photonics Technology Letters, 1989
Polarization characteristics of distributed feedback semiconductor lasers
Applied Physics Letters, 1985