In this paper we report the generation of narrow line-width laser from a laser diode (LD) by using a fiber Bragg grating (FBG). When slipping an FBG onto the pigtail of the LD, the spectral line width becomes narrower (only including a single longitudinal mode). And the spectral bandwidth is below 0.2 nm. The corresponding intensity with a side-mode-suppression ratio (SMSR) of about 22 dB is observed. In addition, tuning the reflection wavelengths of the FBG, we can get a serial of single mode laser with wavelength spacing 0.94 nm (the tuning range about 10 nm). The spectral widths of lasers at different wavelengths are almost the same.

Date Published: 9 October 2000
PDF: 3 pages
Proc. SPIE 4225, Optical Interconnects for Telecommunication and Data Communications, (9 October 2000); doi: 10.1117/12.402694

Published in SPIE Proceedings Vol. 4225:
Optical Interconnects for Telecommunication and Data Communications
Xiaomin Ren; Suning Tang, Editor(s)