Optical: systems and elements – Holographic system or element – Hardware for producing a hologram
Reexamination Certificate
2005-11-08
2005-11-08
Font, Frank G. (Department: 2883)
Optical: systems and elements
Holographic system or element
Hardware for producing a hologram
C359S352000, C359S900000, C065S392000
Reexamination Certificate
active
06963432
ABSTRACT:
The present invention provides a two-beam interference exposure system that can be simply adjusted by rotating only one mirror. By placing a half-wave plate in one of the interference arms and precisely scanning the relative fiber position, the present invention can expose true apodized fiber Bragg gratings in a single scan by simultaneously rotating the angle of the half-wave plate. By rotationally switching the fast and slow axes of the half-wave plate, the present invention can also expose n-phase-shifted fiber grating by the same system.
REFERENCES:
patent: 5367588 (1994-11-01), Hill
patent: 5830622 (1998-11-01), Canning
patent: 6904201 (2005-06-01), St. Hilaire et al.
patent: 2002/0015919 (2002-02-01), Lyngby
patent: 1065535 (2001-01-01), None
patent: 00436667 (2001-05-01), None
Chuang Kai-Ping
Lai Yinchieh
Sheu Lih-Gen
Tsai Meng-Chang
Font Frank G.
Mooney Michael P.
National Chiao Tung University
Rabin & Berdo P.C.
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