Aging-induced wavelength shifts in 1.5-μm DFB lasers

Author

Chung, Yun C. ; Jichai Jeong ; Cheng, L.S.

Author_Institution

Crawford Hill Lab., AT&T Bell Labs., Holmdel, NJ, USA

Volume

6

Issue

7

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

792

Lastpage

795

Abstract

We report measured wavelength shifts of over one hundred 1.5-μm DFB lasers aged under three different conditions far a period corresponding to the system´s lifetime (/spl sim/25 years). The results show that the lasers aged at lower temperature (thus higher optical power) have wider spread of wavelength shifts than the lasers aged at higher temperature. No correlation was observed between the wavelength shifts and the aging rates or the aging-induced changes in the threshold currents. The aging-induced wavelength shifts were relatively small (/spl plusmn/1 /spl Aring/) for most lasers. However, about 10% of the lasers exhibit larger wavelength shifts of up to about /spl plusmn/4 /spl Aring/.

Keywords

ageing; distributed feedback lasers; environmental testing; laser transitions; semiconductor lasers; 1.5 mum; 25 y; aging rates; aging-induced wavelength shifts; capped mesa buried heterostructure DFB lasers; optical power; threshold currents; Aging; Fiber lasers; Laser feedback; Laser modes; Laser stability; Optical feedback; Power lasers; Temperature; Wavelength division multiplexing; Wavelength measurement;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.311456

Filename

311456