Temperature-tuned ZnS etalon filters for WDM systems

Author

Chung, Y.C.

Author_Institution

AT&T Bell Labs., Holmdel, NJ, USA

Volume

4

Issue

6

fYear

1992

fDate

6/1/1992 12:00:00 AM

Firstpage

600

Lastpage

602

Abstract

A simple temperature-tunable (5 GHz/ degrees C) ZnS etalon filter for channel selection and noise filtering in amplified wavelength-division (WDM) systems is reported. It has a large free spectral range (30 nm), a narrow passband (4.6 AA), and a low insertion loss (1 dB). The filter has been used for channel selection in a WDM system without any degradation in the receiver sensitivity. When the filter was locked to a desired channel using a simple digital servoloop, it maintained a very stable transmission (maximum drift <3%) even when the wavelength of the transmitter laser was intentionally changed by as much as 1 nm.<>

Keywords

II-VI semiconductors; frequency division multiplexing; light interferometers; multiplexing equipment; optical communication equipment; optical filters; thermo-optical effects; tuning; zinc compounds; 1 dB; WDM systems; ZnS etalon filters; channel selection; digital servoloop; large free spectral range; low insertion loss; narrow passband; noise filtering; semiconductor; temperature tuning; Degradation; Digital filters; Filtering; Insertion loss; Laser stability; Laser transitions; Passband; Transmitters; Wavelength division multiplexing; Zinc compounds;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.141981

Filename

141981