Optical waveguides – Planar optical waveguide
Patent
1992-08-20
1993-12-28
Gonzalez, Frank
Optical waveguides
Planar optical waveguide
385 37, 359569, 359574, G02B 610, G02B 634
Patent
active
052747204
ABSTRACT:
An optical connector comprises a ring-shaped waveguide and a straight waveguide for introducing a light beam into the waveguide. These waveguides are arranged on a substrate in a manner such that the gap between their nearest positions is not longer than the wavelength of the light beam. The radius, width, thickness, and refractive index distribution of the ring-shaped waveguide are set so that a light beam with a wavelength .lambda.=2.pi.r
(r and n are the radius of the ring-shaped waveguide and a certain natural number, respectively) continues to circulate therein. A grating having a cycle of 2.pi.r.lambda./(2.pi.r+.lambda.) or 2.pi.r.lambda./(2.pi.r-.lambda.] is formed on the surface of the ring-shaped waveguide.
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patent: 4991919 (1991-02-01), Nishiwaki et al.
patent: 5082340 (1992-01-01), Aoshima et al.
patent: 5159650 (1992-10-01), Nishiwaki et al.
Appl. Phys. Lett. 60(3), Jan. 20, 1992, Whispering-gallery mode microdisk lasers; pp. 289-291, by S. L. McCall et al.
Appl. Phys. Lett. 59 (26), Dec. 23, 1991, Single-frequency continuous-wave operation of ring resonator diode lasers; pp. 3360-3362, by J. P. Hohlmer et al.
Gonzalez Frank
Olympus Optical Co,. Ltd.
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