Optical waveguides – With optical coupler – Particular coupling function
Reexamination Certificate
2007-01-30
2007-01-30
Healy, Brian (Department: 2883)
Optical waveguides
With optical coupler
Particular coupling function
C385S027000, C385S123000, C385S127000, C385S050000, C359S341500, C359S333000, C359S341100, C359S341300
Reexamination Certificate
active
10990088
ABSTRACT:
The specification describes an optical fiber device wherein a LOM is converted to an HOM prior to entering the gain section. The gain section is a few mode fiber that supports the HOM. The output from the gain section, i.e. the HOM, may be utilized as is, or converted back to the LOM. With suitable design of the few mode fiber in the gain section of the device, the effective area, Aeff, may be greater than 1600 μm2. The large mode separation in the gain section reduces mode coupling, allowing greater design freedom and reducing the bend sensitivity of the optical fiber.
REFERENCES:
patent: 5781684 (1998-07-01), Liu
patent: 6985654 (2006-01-01), De Barros et al.
DiGiovanni David J.
Ramachandran Siddharth
Furakawa Electric North America Inc.
Healy Brian
Mooney Michael P.
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