Optical: systems and elements – Optical amplifier – Optical fiber
Reexamination Certificate
2007-02-27
2007-02-27
Hughes, Deandra M. (Department: 3663)
Optical: systems and elements
Optical amplifier
Optical fiber
C359S341320
Reexamination Certificate
active
10833437
ABSTRACT:
An optical amplifier and a laser generator based on the fiber side-polished technology having a high pumping efficiency, a low noise figure and a small footprint are provided in this application. The optical amplifier and the laser, which have a very long effective interaction length in conjunction with highly doped Erbium glass attached to its surface and an addition of a slanted fiber grating inscribed in the guiding core at the polished region can spatially separate the signal and pump power to simultaneously improve the pumping efficiency and optimize the penetrated depth of the signal evanescent-field. The spontaneous emission is kept from being amplified and therefore a high quality amplified signal is produced.
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Chen Nan-Kuang
Chi Sien
Lai Yinchieh
Tseng Shiao-Min
Hughes Deandra M.
National Chiao Tung University
Volpe and Koenig P.C.
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