Time-resolving wavelength chirp with Fabry-Perot etalons and gratings: a theoretical approach

Author

Olsen, C. Michael ; Olesen, Henning

Author_Institution

IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA

Volume

9

Issue

4

fYear

1991

fDate

4/1/1991 12:00:00 AM

Firstpage

436

Lastpage

441

Abstract

Basic dynamic properties of Fabry-Perot (FP) etalons and gratings are investigated for a square-wave shaped input pulse with a linearly changing wavelength. It is shown that for the chirp rates present in distributed feedback (DFB) laser pulses a simultaneous good resolution in the wavelength and time domain is attainable with an etalon due to its small FWHM time-bandwidth product of 0.11. This is not possible with the grating, which has a time∞bandwidth product of 0.89. A simulation of time resolving the dynamic chirp of a DFB laser pulse is presented. The result is compared to the actually calculated incident wavelength variation. The dynamic aspects of FP etalons and gratings for time resolving the wavelength chirp in laser pulses are given

Keywords

diffraction gratings; laser beams; light interferometers; optical communication equipment; DFB laser pulses; Fabry-Perot etalons; Fabry-Perot gratings; chirp rates; distributed feedback; dynamic chirp; incident wavelength variation; linearly changing wavelength; square-wave shaped input pulse; time domain; time resolving; time-bandwidth product; wavelength chirp; Chirp; Fabry-Perot; Gratings; Optical pulses; Passband; Pulse measurements; Pulse shaping methods; Signal resolution; Time measurement; Wavelength measurement;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.76656

Filename

76656