Title: Short pulse lasers using large mode area fibers and higher order modes
Application Number: 200610121304 Application Date: 2006.08.22
Publication Number: 1976140 Publication Date: 2007.06.06
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H01S3/00;G02B6/00;G02F1/35
Applicant(s) Name: Furukawa Electric North Americ Address:
Inventor(s) Name: Ramachandran Siddharth;Nicholson Jeffrey
Attorney & Agent: liyong
Abstract:
    The invention describes an optical fiber device for propagating and recompressing high energy, ultrashort pulses with minimal distortions due to nonlinearity. The device is based on propagation in a higher order mode (HOM) of a few-moded fiber. Coupling into the HOM may be accomplished using long-period gratings. Features of the HOM fiber mode that are useful for high quality pulse compression include large effective area, high dispersion and low dispersion slope. In a preferred case the long period gratings go through a turnaround point (TAP) at the wavelength of operation.
Time: 5
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