Title :
Analysis of a λ/4-phase-shifted double phase-shift-controlled distributed feedback wavelength tunable optical filter
Author :
Ghafouri-Shiraz, H. ; Lew, Shaw-Hiong ; Kobayashi, Shinichi ; Kamata, I. Norihiko ; Yamada, Koji
Author_Institution :
Sch. of Electron. & Electr. Eng., Birmingham Univ., UK
fDate :
4/1/1997 12:00:00 AM
Abstract :
We have proposed a new λ/4-phase-shifted double phase-shift-controlled distributed feedback wavelength tunable optical filter structure. Theoretical analysis based on the transfer matrix method reveals that this filter can achieved a wavelength tuning range of 28.3 and 34.3 Å for the grating coupling coefficients of 6 and 10 mm, respectively. The filter has almost constant peak transmissivity (gain) of more than 30 dB within its tuning range, and its side-mode suppression ratio (SMSR) ranges from 15 to 34.7 dB
Keywords :
band-stop filters; diffraction gratings; distributed feedback lasers; laser feedback; optical filters; semiconductor lasers; tuning; wavelength division multiplexing; λ/4-phase-shifted filter; gain; grating coupling coefficients; peak transmissivity; phase-shift-controlled distributed feedback wavelength tunable optical filter; side-mode suppression ratio; transfer matrix method; tunable optical filter struct; tuning range; wavelength tunable optical filter structure; wavelength tuning range; Band pass filters; Distributed feedback devices; Gratings; Laser tuning; Optical feedback; Optical fiber filters; Optical filters; Optical tuning; Tunable circuits and devices; Wavelength division multiplexing;
Journal_Title :
Quantum Electronics, IEEE Journal of
