Optical: systems and elements – Optical modulator – Light wave directional modulation
Patent
1996-06-13
1997-11-18
Ben, Loha
Optical: systems and elements
Optical modulator
Light wave directional modulation
359285, 359298, 385 1, 385 7, 310313B, G02F 133
Patent
active
056893620
ABSTRACT:
An acousto-optic deflector device having a piezoelectric thin film and IDT formed on a substrate for deflecting a light by causing an SAW generated at an SAW generator region to interact with the light at a light waveguide region. The piezoelectric thin film is constructed of a first piezoelectric thin film having a relatively high resistance and a high piezoelectricity in the SAW generator region, and a second piezoelectric thin film having a smaller light propagation loss than the first piezoelectric thin film 3a in the light waveguide region.
REFERENCES:
patent: 4092060 (1978-05-01), Nunoshita et al.
patent: 4532632 (1985-07-01), Yamashita et al.
patent: 4900113 (1990-02-01), Hatori
patent: 4940304 (1990-07-01), Hatori
patent: 4961632 (1990-10-01), Hatori et al.
patent: 5083856 (1992-01-01), Hatori et al.
patent: 5101294 (1992-03-01), Jain et al.
patent: 5138482 (1992-08-01), Hatori et al.
I. Shibayama, "Interaction between surface acoustic waves and optical surface wavs", Surface Acoustic Wave Engineering, The Institute of Electronics and Communication Engineers of Japan, Tokyo, Chap. 7, pp. 132-141 (1983).
Sunita, Jain, et al., "Thin film layered structure for acousto-optic devices", Journal of Phsyics D: Applied Physics, vol.25, No. 7, Jul. 14, 1992.
Anisimikin, V.I. et al., "Piezoelectric films for acoustoelectronic devices: fabrication, properties, and application", Soviet Physics: Technical Physics, vol. 35, No. 6, Jun. 1, 1990.
Srivastava, et al., "Electrical Characteristics of Lithium-Doped ZnO Films", Journal of the Electrochemical Society, vol. 136, No. 11, Nov. 1989.
Patent Abstracts of Japan, vol. 011, No. 216 (P-595), 14 Jul. 1987 & JP-A-62 034125, Feb. 14, 1987.
Patent Abstracts of Japan, vol. 011, No. 216 (P-595), 14 Jul. 1987 & JP-A-62 034126, Feb. 14, 1987.
Ben Loha
Murata Manufacturing Co. Ltd.
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