Title :
Fast optical wavelength interrogator employing arrayed waveguide grating for distributed fiber Bragg grating sensors
Author :
Sano, Yasukazu ; Yoshino, Toshihiko
Author_Institution :
Electron. Equip. Technol. Lab., Fuji Electr. Corp. R&D Ltd., Kanagawa, Japan
fDate :
1/1/2003 12:00:00 AM
Abstract :
A new type of interrogator for distributed fiber Bragg grating (FBG) sensors that employs an arrayed waveguide grating (AWG) is proposed and its operating features are in detail investigated both theoretically and experimentally. The remedy for achieving the linear characteristics of wavelength detection as well as for insuring the reliable and environmentally stable operation of interrogation is proposed and its usefulness is demonstrated in good agreement with the experimental results. The developed interrogator consists of a fully passive, small, all-solid, rugged optical IC and can detect wavelengths of a great number of FBG sensors with high precision better than 0.5 pm and high speed.
Keywords :
Bragg gratings; arrayed waveguide gratings; distributed sensors; fibre optic sensors; integrated optoelectronics; intelligent sensors; measurement errors; reliability; stability; all-solid; arrayed waveguide grating; distributed fiber Bragg grating sensors; environmentally stable operation; fast optical wavelength interrogator; fully passive; high precision; high speed; linear characteristics; operating features; reliable operation; rugged optical IC; wavelength detection; Arrayed waveguide gratings; Bragg gratings; Fiber gratings; High speed optical techniques; Optical arrays; Optical fiber sensors; Optical sensors; Optical waveguide theory; Optical waveguides; Sensor arrays;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2003.808620
