Title :
Optimum bandpass optical filter synthesis using periodic corrugated waveguides with π/2 phase shifts
Author :
Bakhtazad, A. ; Abiri, Habibollah ; Rahnavard, Mohammed H.
Author_Institution :
Dept. of Electr. Eng., Shiraz Univ., Iran
fDate :
8/1/1995 12:00:00 AM
Abstract :
A graphical method is proposed for the synthesis of optical bandpass filters, using π/2-phase shift sections. Bandpass filters with the desired characteristics, such as central wavelength, bandwidth, ripple factor, selectivity, minimum attenuation etc., can be synthesized by proper choice of corrugation pitch, coupling coefficient, filter length, and the location of π/2-phase shift sections. This method is relatively simple as compared to the previous works. Besides, it allows to optimize certain criteria
Keywords :
band-pass filters; optical communication equipment; optical couplers; optical losses; optical waveguide filters; optimisation; π/2 phase shifts; π/2-phase shift sections; central wavelength; corrugation pitch; coupling coefficient; filter length; graphical method; minimum attenuation; optimum bandpass optical filter synthesis; periodic corrugated waveguides; ripple factor; selectivity; Approximation methods; Band pass filters; Bandwidth; Circuit synthesis; Frequency response; Gratings; Optical attenuators; Optical filters; Optical sensors; Optical waveguides;
Journal_Title :
Lightwave Technology, Journal of
