DocumentCode :
1357707
Title :
Wavelength trimming by external light irradiation-post-fabrication lasing wavelength adjustment for multiple-wavelength distributed-feedback laser arrays
Author :
Sudoh, Tsurugi K. ; Nakano, Yoshiaki ; Tada, Kunio
Author_Institution :
Dept. of Electron. Eng., Tokyo Univ., Japan
Volume :
3
Issue :
2
fYear :
1997
fDate :
4/1/1997 12:00:00 AM
Firstpage :
577
Lastpage :
583
Abstract :
Oscillation wavelength of distributed-feedback (DFB) lasers is easily affected by small variation in device parameters, and therefore, prescribing oscillation wavelength is very difficult. This insufficient wavelength reproducibility limits the device yield, specifically, in multiple-wavelength DFB laser arrays whose element needs to have lasing wavelength that matches pre-defined wavelength-division-multiplexed (WDM) channels. In this paper, we describe a novel concept to manage this problem, namely, “wavelength trimming.” Here, the oscillation wavelength error is corrected after the device fabrication without using external active control circuitry. In this particular demonstration, we have used Se-based chalcogenide glass film having photo-induced refractive index change as a part of the laser waveguide, and demonstrated the wavelength trimming of 0.14 nm at 1.55 μm in an index-coupled DFB laser by He-Ne laser irradiation
Keywords :
distributed feedback lasers; laser transitions; optical films; optical transmitters; refractive index; semiconductor laser arrays; semiconductor lasers; waveguide lasers; wavelength division multiplexing; 1.55 mum; DFB lasers; Se-based chalcogenide glass film; WDM; device fabrication; device parameters; device yield; element; external active control circuitry; external light irradiation; index-coupled DFB laser; insufficient wavelength reproducibility; laser waveguide; lasing wavelength; multiple-wavelength DFB laser arrays; multiple-wavelength distributed-feedback laser arrays; optical transmitters; oscillation wavelength; oscillation wavelength error; photo-induced refractive index change; post-fabrication lasing wavelength adjustment; pre-defined wavelength-division-multiplexed channels; wavelength trimming; Circuits; Error correction; Glass; Laser transitions; Optical arrays; Optical device fabrication; Optical films; Reproducibility of results; Waveguide lasers; Wavelength division multiplexing;
fLanguage :
English
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
1077-260X
Type :
jour
DOI :
10.1109/2944.605709
Filename :
605709
Link To Document :
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