Wavelength chirp in a high-κL quarter-wave-shifted DFB laser: characterization and influence on system performance

Author

Olsen, C.M. ; Izadpanah, H. ; Lin, C.

Author_Institution

Bellcore, Red Bank, NJ, USA

Volume

8

Issue

12

fYear

1990

fDate

12/1/1990 12:00:00 AM

Firstpage

1810

Lastpage

1815

Abstract

Time-resolved and time-averaged chirp measurements of a quarter-wave shifted 1.53-μm DFB laser with a high-coupling coefficient are presented, showing a slow-steady shift towards shorter wavelengths lasting 1.5 ns after the laser is turned on. A simple method of screening for this phenomenon is presented. Transmission on a regular single-mode fiber reveals the effect of pattern-dependent pulse compression causing severe performance degradation in a long-haul NRZ (nonreturn-to-zero) system, but improving that of an RZ system

Keywords

distributed feedback lasers; optical communication equipment; optical testing; semiconductor device testing; semiconductor junction lasers; time resolved spectroscopy; 1.5 ns; 1.53 micron; DFB laser chirp; distributed feedback lasers; high-coupling coefficient; nonreturn-to-zero; pattern-dependent pulse compression; performance degradation; quarter-wave-shifted DFB laser; shorter wavelength lasing; single-mode fiber; system performance; time-averaged chirp measurements; time-resolved wavelength chirp measurements; Cameras; Chirp modulation; Equations; Fiber lasers; Optical coupling; Optical modulation; Optical signal processing; Spectroscopy; System performance; Wavelength measurement;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.62875

Filename

62875