High-accuracy laser-wavelength detection using a synchro-scanned optical disk filter

Author

Katagiri, Y. ; Aida, K. ; Tachikawa, Y. ; Nagaoka, S. ; Abe, H. ; Ohira, F.

Author_Institution

NTT Opto-Electron. Labs., Tokyo, Japan

Volume

11

Issue

1

fYear

1999

Firstpage

102

Lastpage

104

Abstract

A simple laser-wavelength detection method is presented based on time-domain signal analysis using a continuously tunable, wide-band synchro-scanned optical disk filter. A differential signal is defined between two light powers monitored ground the time corresponding to the laser wavelength of interest to detect the slight wavelength deviation. A maximum detection accuracy of /spl plusmn/100 MHz has been achieved using a filter with a 3-dB width of 0.83 nm.

Keywords

laser variables measurement; measurement uncertainty; optical filters; synchronisation; wavemeters; continuously tunable wide-band synchro-scanned optical disk filter; differential signal; high-accuracy laser-wavelength detection; laser wavelength; laser-wavelength detection method; light powers; maximum detection accuracy; slight wavelength deviation detection; synchro-scanned optical disk filter; time-domain signal analysis; Diffraction gratings; Holographic optical components; Holography; Laser tuning; Monitoring; Optical filters; Optical interferometry; Power lasers; Tunable circuits and devices; Wideband;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.736408

Filename

736408