Frequency stabilization of laser diode using a frequency-locked ring resonator to acetylene gas absorption lines

Author

Sakai, Y. ; Yokohama, I. ; Kominato, T. ; Sudo, S.

Author_Institution

NTT Opto-Electron. Lab., Kanagawa, Japan

Volume

3

Issue

10

fYear

1991

Firstpage

868

Lastpage

870

Abstract

The frequency stabilization of a 1.5 mu m distributed-feedback (DFB) laser diode using a planar lightwave circuit (PLC) ring resonator whose resonant frequency is locked to /sup 12/C/sub 2/H/sub 2/ and /sup 13/C/sub 2/H/sub 2/ gas absorption lines is described. The resonant frequency of PLC ring resonator was stabilized within a 5 MHz peak-to-peak fluctuation. With this ring resonator the outer frequency fluctuation of the DFB laser diode was stabilized within 10 MHz at every resonant frequency at 5 GHz intervals. The stability demonstrated is as good as the method using molecular absorption lines as a reference. The stabilized frequency can be selected at any point on the optical resonant peaks of the optical resonator.<>

Keywords

distributed feedback lasers; infrared spectra of organic molecules and substances; laser cavity resonators; laser frequency stability; organic compounds; ring lasers; semiconductor junction lasers; 1.5 micron; DFB LD; acetylene gas absorption lines; frequency stabilization; frequency-locked ring resonator; laser diode; optical resonant peaks; outer frequency fluctuation; planar lightwave circuit; resonant frequency; Absorption; Diode lasers; Fluctuations; Optical resonators; Optical ring resonators; Programmable control; RLC circuits; Resonance; Resonant frequency; Stability;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.93244

Filename

93244