Title :
60 GHz guided-wave electro-optic modulator using novel electrode structure of coupled microstrip line resonator
Author :
Enokihara, Akira ; Furuya, Hiroyuki ; Yajima, Hiroyoshi ; Kosaki, Masahiro ; Murata, Hiroshi ; Okamura, Yasuyulu
Author_Institution :
Adv. Technol. Res. Labs., Matsushita Electr. Ind. Co., Ltd., Kyoto, Japan
Abstract :
A guided-wave electro-optic modulator is proposed and its operation of optical intensity modulation by 60 GHz millimeter-wave signals is successfully confirmed. The modulator uses a newly developed electrode structure consisting of coupled microstrip lines. A high voltage can be induced by the resonance of the odd propagation mode to realize efficient electro-optic modulation even at millimeter-wave frequencies. The properties of the coupled microstrip lines were evaluated to show the effectiveness as a modulation electrode. The modulator designed at 60 GHz was fabricated with LiNbO3 waveguides. The measured modulation coefficient normalized at 1 cm electrode length and 100 mW signal input was 2.4 rad.
Keywords :
electro-optical modulation; microstrip couplers; microstrip lines; microstrip resonators; modulators; optical fibre communication; waveguide couplers; 1 cm; 100 mW; 60 GHz; LiNbO3; LiNbO3 waveguides; coupled microstrip line resonator; coupled microstrip lines; electrode structure; electrooptic modulation; guided-wave electrooptic modulator; microstrip resonator; millimeter-wave frequencies; millimeter-wave signals; modulation coefficient; modulation electrode; odd propagation mode resonance; optical fiber communication; optical intensity modulation; optical waveguides; voltage induction; Electrodes; Electrooptic modulators; Intensity modulation; Microstrip resonators; Millimeter wave propagation; Optical modulation; Optical propagation; Optical resonators; Resonance; Voltage;
Conference_Titel :
Microwave Symposium Digest, 2004 IEEE MTT-S International
Print_ISBN :
0-7803-8331-1
DOI :
10.1109/MWSYM.2004.1339018
