Waveguide type optical head

Details Waveguide type optical head Waveguide type optical head

1987-11-05

1990-03-27

Gonzalez, Frank

350 9618, G02B 612

Patent

active

049115120

ABSTRACT:
A waveguide type optical head comprises a thin film waveguide of semiconductor or dielectric substance formed on a semiconductor or dielectric substrate, an optical element with an optical signal processing function provided on the thin film waveguide, and a semiconductor laser fixed on the substrate for emitting laser beam into the waveguide, and is characterized in that part of the laser beam emitted from the semiconductor laser is reflected by the incident end surface of the thin film waveguide and returned to the semiconductor laser.

REFERENCES:
patent: 4156206 (1979-05-01), Comerford et al.
patent: 4468084 (1984-08-01), Hutcheson et al.
patent: 4529876 (1985-07-01), Walker
patent: 4640574 (1987-02-01), Unger
patent: 4718052 (1988-01-01), Kondo et al.
patent: 4729618 (1988-03-01), Yoshida et al.
patent: 4750799 (1988-06-01), Kawachi et al.
patent: 4760569 (1988-07-01), Mahlein
K. North, "Integrated optical . . . ," IBM Technical Disclosure Bulletin, vol. 24, No. 2, Jul. 1981, pp. 893-894.

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