Multi-wavelength channel transmission filter

Optical waveguides – With optical coupler – Particular coupling function

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385 37, 385 31, 385 24, 385 46, G02B 626

Patent

active

060978619

ABSTRACT:
An improved multi-wavelength channel transmission filter, by which it is possible to selectively and simultaneously separate multiple wavelength channel signals without any optical time delays among, different wavelength channels, includes one optical circulator with four terminal ports, one polarization beam splitter (PBS), one half-wave plate, and a number of Brag, gratings formed in an optical waveguide for reflection of multi-wavelength channels by combining the wavelength characteristic of each Bragg grating which is determined in accordance with the grating structure.

REFERENCES:
patent: 5408319 (1995-04-01), Halbout et al.
patent: 5682446 (1997-10-01), Pan et al.
patent: 5689593 (1997-11-01), Pan et al.
S.V. Chernikov et al., "All-Fiber Dispersive Transmission Filters based on Fiber Grating Reflectors", Optics Letters, vol. 20, No. 14, Jul. 15, 1995, pp. 1586-1588.

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