Optical waveguides – With optical coupler – Particular coupling structure
Patent
1991-11-04
1993-03-16
Lee, John D.
Optical waveguides
With optical coupler
Particular coupling structure
385132, 369 4412, 369121, G02B 630
Patent
active
051951525
ABSTRACT:
An apparatus for recording onto and reading from an optical disk includes an array of laser diodes that emit a plurality of laser beams with each beam at the diode source spaced a distance greater than about 50 .mu.m from adjacent beams. The apparatus includes a plurality of channel waveguides coupled to the plurality of laser diodes with each channel waveguide associated with a respective laser diode for directing light emitted by the diodes toward the optical disk for optical recording and for receiving reflected light from the optical disk for reading the optical disk. Each beam emanating from the channels is spaced from adjacent beams a preselected distance less than about 50 .mu.m.
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patent: 4897671 (1990-01-01), Mahapatra et al.
patent: 4998231 (1991-03-01), Watanabe et al.
patent: 5109447 (1992-04-01), Chan
Reno, C. W., Optical Disk Recording Techniques for Data Rates Beyond 100 Mbps, SPIE, Proc 421 (1983), pp. 156-162.
Kowalski, D. C., et al, Multichannel Digital Optical Disk Memory System, Optical Engineering, vol. 22, No. 4, 1983, pp. 464-472.
Barns S.
Eastman Kodak Company
Holloway William W.
Lee John D.
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