Coupler used to fabricate add-drop devices, dispersion compensat

Details Coupler used to fabricate add-drop devices, dispersion compensat Coupler used to fabricate add-drop devices, dispersion compensat

1994-01-19

1995-10-17

Ullah, Akm E.

Optical waveguides

With optical coupler

Particular coupling function

G02B 600

Patent

active

054598010

ABSTRACT:
Device for use in adding or dropping light signals at predetermined center wavelengths to or from a wavelength division multiplex, fiber optic transmission system. The device includes an evanescent wave coupler having a coupling region formed from two single mode waveguides, the coupling region being formed so that there is substantially complete evanescent field coupling of light from one waveguide to the other in a predetermined wavelength band. Further, the device has a Bragg grating disposed in the coupling region in each of the waveguides.

REFERENCES:
patent: 4557551 (1985-12-01), Dyott
patent: 4589725 (1986-05-01), Dyott
patent: 4669814 (1987-06-01), Dyott
patent: 4679894 (1987-07-01), Pavlath
patent: 4688882 (1987-08-01), Failes

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