Optical wavelength demultiplexer

Details Optical wavelength demultiplexer Optical wavelength demultiplexer

1985-01-22

1986-11-11

Orsino, Jr., Joseph A.

Multiplex communications

Wide area network

Packet switching

350 9615, 350 9619, H04B 900

Patent

active

046226630

ABSTRACT:
An optical wavelength demultiplexer includes a retainer means which curvedly retains an optical fiber. A mirror-polished surface is formed on the convex side of a curved portion of the optical fiber which is retained by the retainer means in such a manner that the mirror-polished surface is in close proximity to the core of the optical fiber. Further, a diffraction grating is disposed such as to oppose and contact the mirror-polished surface. The pitch of the diffraction grating is set to be .lambda./2n.sub.f, where .lambda. represents the wavelength of light to be separated, and n.sub.f the effective refractive index of the optical fiber. The direction of the pitch is selected to be coincident with the extending direction of the optical fiber.

REFERENCES:
patent: 4335933 (1982-06-01), Palmer
patent: 4343532 (1982-08-01), Palmer
patent: 4493528 (1985-01-01), Shaw et al.

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