Coherent light generators – Optical fiber laser
Reexamination Certificate
2006-02-07
2006-02-07
Wong, Don (Department: 2828)
Coherent light generators
Optical fiber laser
C372S018000, C372S029011, C372S106000
Reexamination Certificate
active
06996136
ABSTRACT:
The ultrashort fiber laser with a dispersion-managed cavity. The laser is an actively mode-locked sigma laser, typically locked at a repetition rate of 10 GHz, driven by an external frequency source and actively length stabilized, and nearly 10,000 pulses circulate within the laser cavity. A Mach-Zehnder modulator is placed in a loop of polarization-maintaining (PM) fiber. The polarization state of light injected into the non-PM branch evolves in a random manner but is transformed into an orthogonal state by a Faraday mirror; linearly polarized light injected into the branch by a polarizing beamsplitter returns to the beamsplitter also linearly polarized but rotated by 90°. The cavity of the laser is composed of several fibers. The average dispersion Davis anomalous and is approximately equal to 0.1 ps/(nm·km).
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Carruthers Thomas F.
Duling, III Irl N.
Ferrett Sally A.
Jackson Cornelius H
Karasek John J.
The United States of America as represented by the Secretary of
Wong Don
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