Title :
Wideband integrated magnetooptic frequency shifter and modulator at X-band
Author :
Pu, Y. ; Tsai, C.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Irvine, CA, USA
Abstract :
A new wideband electronically tunable integrated optical frequency shifting scheme that utilizes noncollinear guided-wave magnetooptic (MO) Bragg diffraction from magnetostatic waves (MSWs) in a bismuth-doped yttrium-iron-garnet/gadolinium-gallium-garnet (YIG/GGG) waveguide. Constancy in the output angle of the frequency-shifted light beam, irrespective of the amount of frequency shift, is facilitated by synchronous tuning of the carrier frequency of the MSWs and the bias magnetic field by means of an electronic synchronizer. The device, operating at the optical wavelength of 1.302 μm with carrier frequency centered at X-band, demonstrates desirable characteristics including large frequency shift, very large bandwidth, large dynamic range, and fast tuning speed
Keywords :
bismuth compounds; gadolinium compounds; garnets; integrated optics; magneto-optical devices; magnetostatic wave devices; modulators; yttrium compounds; 1.302 micron; BiYFe5O12-GdGa5O12; BiYIG-GdGG; X-band; bandwidth; bias magnetic field; carrier frequency; dynamic range; electronic synchronizer; frequency-shifted light beam; integrated optical frequency shifting scheme; magnetooptic frequency shifter; magnetostatic waves; modulators; noncollinear guided-wave magneto-optic Bragg diffraction; output angle; synchronous tuning; tuning speed; Frequency modulation; Integrated optics; Magnetic modulators; Magnetostatic waves; Optical diffraction; Optical modulation; Optical tuning; Optical waveguides; Wideband; Yttrium;
Conference_Titel :
Ultrasonics Symposium, 1992. Proceedings., IEEE 1992
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0562-0
DOI :
10.1109/ULTSYM.1992.276044
