Optical waveguide filters

Details Optical waveguide filters Optical waveguide filters

1996-10-10

1998-02-10

Ngo, John

Optical waveguides

With optical coupler

Input/output coupler

G02B 634

Patent

active

057177996

ABSTRACT:
A distributed Bragg reflection pass-band filter in an optical fiber waveguide is provided by grating elements arranged to provide improved flatness of reflection pass-band, a high rate of roll-off, and reduced amplitude side-bands by the use of chirp and apodisation profiles that are related such that the square of the coupling coefficient is substantially proportional to the rate of change of chirp.

REFERENCES:
patent: 5058977 (1991-10-01), Sorin
patent: 5367588 (1994-11-01), Hill et al.

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