Coherent light generators – Optical fiber laser
Reexamination Certificate
2005-10-25
2005-10-25
Wong, Don (Department: 2821)
Coherent light generators
Optical fiber laser
C372S003000, C372S092000, C372S102000
Reexamination Certificate
active
06959021
ABSTRACT:
Fiber laser systems. One system comprises a pump energy source, a first fiber and a WDM for transferring pump energy from the first fiber to a second fiber that comprises a grating for reflecting energy at a predetermined wavelength. The first fiber is devoid of a grating substantially reflecting energy of the predetermined wavelength. In another embodiment, a system includes a pump energy source and a fiber comprising a loop-shaped portion, a first non loop-shaped portion comprising a grating for reflecting pump energy, and a second non loop-shaped portion comprising a grating for reflecting a Stoke shifted wavelength. In another embodiment, a system includes a pump energy source and a fiber comprising a first pair of gratings for reflecting energy at a first wavelength corresponding to a first order Stoke shift, a second pair of gratings for reflecting energy at a second wavelength corresponding to a Stoke shift order greater than one, and a third pair of gratings for reflecting energy having a Stoke shift order greater than that of the second wavelength. No grating of the third pair is located between gratings of the second pair.
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Demidov Andrey A.
Po Hong
Al-Nazer Leith
Daley Sean P.
Fish and Richardson P.C.
OCG Technology Licensing, LLC
Rainville Peter J.
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