Optical: systems and elements – Optical amplifier – Particular active medium
Reexamination Certificate
2008-03-11
2008-03-11
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Particular active medium
C359S332000
Reexamination Certificate
active
11031503
ABSTRACT:
Wavelength converter and methods are based on cross-gain modulation. The wavelength converter has two semiconductor optical amplifiers to perform double cross-gain modulations and double inversions. The first semiconductor optical amplifier performs a first cross-gain modulation on a first continuous wave light using the input light as a modulating light to generate an inverted first-stage cross-gain modulated light. The second semiconductor optical amplifier performs a second cross-gain modulation on a second continuous wave light using the first-stage cross-gain modulated light as a modulating light to generate a double-inverted output light. The output light is non-inverted with respect to the input light.
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Elmirghani, J. et al., “All-Optical Wavelength Conversion: Technologies and Applications in DWDM Networks,” IEEE Communications Magazine, Mar. 2000, pp. 86-92.
Hellner Mark
Perkins Coie LLP
Sanmina-SCI Corporation
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