Method for patterning an optical device for optical IC, and an o

Details Method for patterning an optical device for optical IC, and an o Method for patterning an optical device for optical IC, and an o

1993-02-23

1994-08-09

Lerner, Martin

Optical: systems and elements

Holographic system or element

Having particular recording medium

359 15, 359 34, 385 37, G02B 532, G02B 634, G03H 104

Patent

active

053371690

ABSTRACT:
A method of patterning an optical device for an optical IC whose purpose is to diffract a light beam incident on one surface of a device substrate to cause a light beam to emerge from another surface of the device. In this method, a layer of a substance of variable refractive index is formed on an optical substrate, coherent light is caused to irradiate the layer from the direction of the normal to the surface which will be the incidence side of the device when it is used or from the opposite side, and coherent light is caused to irradiate the layer from the direction of the normal to the surface which will be the emergence side of the device when it is used or from the opposite side to form an interference pattern on the layer that performs diffraction.

REFERENCES:
patent: 3885856 (1975-05-01), Ostrowsky et al.
patent: 4378142 (1983-03-01), Ono
patent: 4400616 (1983-08-01), Chevillat et al.
patent: 4948213 (1990-08-01), Hasegawa et al.
Lukosz et al, "Holograms Recorded and Read-Out with Evanescent Field of Guided Waves," pp. WD5-1-WD5-4, no date.
Pennington et al, "Fast Wave Optical Guide Couplers Using Holographic Elements," IBM Technical Disclosure Bulletin, vol. 13, No. 8, Jan. 1971, pp. 2280-2281.
"Hologram Recording and Read-Out with the Evanescent field of Guided Waves", W. Lukosz et al., Optics Communications, vol. 19, No. 2, Nov. 1976.

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