Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1990-02-20
1991-02-05
Richardson, Robert L.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 13, 369110, 369112, 360114, 350 961, 350 9612, 350 9614, 350375, 350376, G11B 1114, G11B 7125
Patent
active
049911600
ABSTRACT:
An integrated optical device for magneto-optical recording and/or reading employs elements that may be fabricated on a substrate using semiconductor manufacturing technology. Such elements include, but are not limited to, a system of waveguides for transmitting light energy beams from lasers to end portions of the waveguides exposed to the outside of the substrate, and from those end portions to detectors, so that reading, writing, focusing, and tracking operations may be performed. The waveguide systems include, e.g., polarization controllers and mode splitters.
REFERENCES:
patent: 3876842 (1975-04-01), Bouwhuis
patent: 3877784 (1975-04-01), Lin
patent: 3949387 (1976-04-01), Chaudhari et al.
patent: 4796226 (1989-01-01), Valette
patent: 4833561 (1989-05-01), Sunagawa et al.
Kogelnik, "Review of Integrated Optics", pp. 227-239.
R. C. Alferness et al, "Ti:LiNbO.sub.3 Guided-Wave Devices for Long Wave-Length Telecommunications", pp. TuAl-1-TuAl-4.
D. Yap et al, "Radiation-Field Coupling in Optical Waveguide Structures with Closely Spaced Abrupt Bends and Branches", Integrated Optical Circuit Engineering (1984), vol. 517, pp. 137-141.
Y. Bourbin et al, "Multi Section Switching Characteristics and Broadband Modulation in Y-Fed Directional Couplers", Advanced Optoelectric Technology (1987), vol. 864, pp. 116-124.
G. M. McWright, "Directional Coupler Modulators for High Speed Diagnostics", Photonics: High Bandwidth Analog Applications (1986), vol. 648, pp. 288-300.
M. Papuchon et al, "Interferometric Sensors Using Integrated Optics", Photonics: High Bandwidth Analog Applications (1986), vol. 648, pp. 259-287.
Papuchon M., "Integrated Optical Modulation and Switching", Integrated Optical Engineering (1984), vol. 517, pp. 154-162.
D. Eberhard et al, "Single Mode Channel Waveguide Polarizer on LiNbO.sub.3 ", pp. 202-205 and 166-167.
M. Papuchon et al, "Anisotropic Polarizers for Ti:LiNbO.sub.3 Strip Waveguides", pp. WC5-1-WC5-4.
Gabriel Lengyel, "GaAlAs p-i-n Junction Waveguide Modulators", pp. 133-139.
C. Mariller et al, "A Simple and Wide Optical Bandwidth TE/TM Converter Using Z Propagating LiNbO.sub.3 Waveguides", pp. 174-176.
V. Hinkov, "Low Frequency Collinear Acoustooptic TM.sub.o -TE.sub.o Mode Conversion and Single Sideband Modulation in Proton-Exchanged LiNbO.sub.3 Optical Waveguides", pp. 168-169.
D. Marcuse, "Leaky Waves", Theory of Dielectric Optical Waveguides, (1974), pp. 31-43.
Paul R. Ashley, "Design Considerations for Mode Extinction Modulators in LiNbO.sub.3 Waveguides", Integrated Optical Circuit Engineering, vol. 578, pp. 75-80.
Nikon Precision Inc.
Richardson Robert L.
LandOfFree
Integrated optical device for magneto-optical recording and read does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Integrated optical device for magneto-optical recording and read, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated optical device for magneto-optical recording and read will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-17292