Large mode area fibers using higher order modes

Optical waveguides – With optical coupler – Particular coupling function

Reexamination Certificate

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Details

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.

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