Low reflectivity fiber bragg grating with rectangular reflection

Details Low reflectivity fiber bragg grating with rectangular reflection Low reflectivity fiber bragg grating with rectangular reflection

1996-02-14

1997-09-16

Ullah, Akm E.

Optical waveguides

With optical coupler

Input/output coupler

359 3, G02B 634

Patent

active

056689012

ABSTRACT:
Fiber Bragg gratings of low reflectivity are given a squared reflectivity function in the form of a tophat configuration having a flat top and lacking undesirable side lobes. Such a reflectivity function for a fiber Bragg grating is achieved by interfering a diffracted beam with a plane wavefront beam so as to impose a sinc function on the resulting interference pattern that imprints the grating on an optical fiber.

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