Title :
Widely tunable long-period gratings fabricated in polymer-clad ion-exchanged glass waveguides
Author :
Chiang, K.S. ; Lor, K.P. ; Chow, C.K. ; Chan, H.P. ; Rastogi, V. ; Chu, Y.M.
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, China
Abstract :
Long-period-grating filters were fabricated in polymer-clad ion-exchanged BK7 glass waveguides. The transmission spectra of the filters exhibited strong polarization dependence. A contrast as high as 25 dB at the resonance wavelength was obtained. The temperature sensitivity of the filters was measured to be /spl sim/9.0 nm//spl deg/C, which allows potential wavelength tuning over the entire S+C+L band of /spl sim/180 nm with a temperature control over a range of /spl sim/20/spl deg/C.
Keywords :
diffraction gratings; ion exchange; optical communication equipment; optical fabrication; optical glass; optical tuning; optical waveguide filters; sensitivity; optical design; optical fabrication; optical waveguide filters; polarization dependence; polymer-clad ion-exchanged BK7 glass waveguides; polymer-clad ion-exchanged glass waveguides; resonance wavelength; temperature control; temperature sensitivity; transmission spectra; widely tunable long-period gratings fabrication; Filters; Glass; Gratings; Polarization; Polymers; Resonance; Temperature control; Temperature distribution; Temperature sensors; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.815331
