Title :
Tunable Transmission Resonant Filter and Modulator With Vertical Gratings
Author :
Kim, Hyo-Chang ; Ikeda, Kazuhiro ; Fainman, Yeshaiahu
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA
fDate :
5/1/2007 12:00:00 AM
Abstract :
Resonant filters in waveguides with vertical gratings have been realized on a silicon-on-insulator wafer. Two identical uniformly distributed Bragg reflectors with vertical gratings are separated by a quarter wavelength phase offset. Experimental studies show a broad stopband and a narrow transmission band which shifts with changing substrate temperature that is also illuminated by an external laser pump beam at 514-nm wavelength. Experimental results on a low-frequency thermal modulation using an external light source are also presented
Keywords :
diffraction gratings; distributed Bragg reflectors; integrated optics; optical modulation; optical waveguide filters; silicon-on-insulator; thermo-optical effects; 514 nm; Si-SiO2; broad stopband; external laser pump beam; external light source; low-frequency thermal modulation; narrow transmission band; optical waveguides; quarter wavelength phase offset; resonant filter; resonant modulator; silicon-on-insulator wafer; transmission filter; transmission modulator; tunable filter; tunable modulator; uniformly distributed Bragg reflectors; vertical gratings; Bragg gratings; Distributed Bragg reflectors; Filters; Laser beams; Laser excitation; Pump lasers; Resonance; Silicon on insulator technology; Temperature; Tunable circuits and devices; Distributed Bragg reflector (DBR); optical filters; silicon-on-insulator (SOI) technology; thermooptic effects;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2007.893922
