DocumentCode :
3560959
Title :
1.5- 
m Frequency-Stabilized 
-Shifted DFB LD Employing an External Fiber Ring Cavi
Author :
Kasai, Keisuke ; Mori, Anne ; Nakazawa, Masataka
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
Volume :
23
Issue :
15
fYear :
2011
Firstpage :
1046
Lastpage :
1048
Abstract :
We present a 13C2H2 frequency-stabilized λ/4-shifted distributed feedback laser diode (DFB LD) with an external fiber ring cavity. By controlling the λ/4-shifted DFB passband to track one Fabry-Pérot mode associated with the fiber ring cavity, the oscillation frequency was continuously tuned over 1.2 GHz without mode-hopping. The optical frequency was stabilized to a 13C2H2 absorption line with an external frequency modulation scheme that enabled us to realize an output beam without additional modulation. As a result, we obtained a frequency stability as high as 1.4 × 10-10 for τ = 1 s and 1.3 × 10-11 for τ = 100 s. In addition, we simultaneously achieved a linewidth of 2.6 kHz and a relative intensity noise of less than -135 dB/Hz.
Keywords :
distributed feedback lasers; frequency modulation; laser cavity resonators; laser frequency stability; light absorption; optical modulation; semiconductor lasers; λ/4-shifted DFB laser diodes; Fabry-Perot mode; absorption line; distributed feedback laser diode; external fiber ring cavity; frequency modulation; frequency-stabilized laser diodes; relative intensity noise; wavelength 1.5 mum; Cavity resonators; Erbium-doped fiber lasers; Frequency modulation; Laser stability; Optical feedback; Optical fiber communication; Optical fibers; $lambda/4$ $hbox{C}_{2}hbox{H}_{2}$ ) absorption line; coherent optical transmission; frequency stabilization;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
Conference_Location :
5/5/2011 12:00:00 AM
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2011.2150211
Filename :
5762590
Link To Document :
