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US20090310111 |
Pulse to Pulse Energy Equalization of Light Beam Intensity
A system for equalizing pulse to pulse energy of a light beam includes a group of optical devices including an optical device configured to exhibit third order nonlinear properties. Transmission...
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US20090225402 |
ARTICLE COMPRISING A WIDEBAND OPTICAL AMPLIFIER WITH A WIDE DYNAMIC RANGE
A multi-channel optical amplifier arrangement operating over a particular bandwidth is provided. The amplifier arrangement includes at least one optical amplifier stage that includes a rare-earth...
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US20090154929 |
GAIN EQUALIZER, OPTICAL AMPLIFIER, LOSS COMPENSATION METHOD, AND OPTICAL AMPLIFICATION METHOD
A gain equalizer for compensation a variation of intensity among a plurality of optical signals each including a different wavelength in a wavelength multiplexed optical signal includes an input...
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US20090052015 |
METHOD FOR ACQUIRING SPECTRUM SHAPE OF A GAIN FLATTENING FILTER IN AN OPTICAL AMPLIFIER
A method for acquiring spectrum shape of a gain flattening filter of a doped optical fiber amplifier comprises the steps of: measuring spectrum shapes at two gain point (H, L) of the doped optical...
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US20090002808 |
Nonlinear Chirped Pulse Fiber Amplifier With Pulse Compression
A chirped-pulse fiber amplification method and system operates with large nonlinear phase shifts (as large as ˜20π or more). In this regime, the pulse spectrum is modified by strong self-phase...
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US20080316591 |
Optical amplifier
According to an aspect of the embodiment of the invention, an optical amplifier including an input port, an output port, a plurality of amplifying parts, an optical attenuator, a gain controller...
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US20080231944 |
OPTICAL EQUALIZATION OF MULTI-LEVEL SYMBOL CONSTELLATIONS
A method of optically equalizing a multi-level (amplitude or phase) optical signal through the effect of an optical equalizer wherein the optical equalizer (OEQ) is placed at either a transmission...
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US20080123181 |
Article Comprising a Series Expandable Erbium-Doped Fiber Amplifier (Se-Edfa)
A method for increasing the number of channels amplified by an optical amplifier arrangement is provided. The optical amplifier arrangement includes at least one optical amplifier stage amplifying...
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US20080074732 |
Optical communication systems including optical amplifiers an amplification methods
Optical systems of the present invention include first and second optical amplifiers that are operated individually to provide gain profiles that do not conform with a desired composite, or overall...
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US20080037109 |
Compensation Of Gain Variations In A Multistage Optical Amplifier
There is described a method for compensation of gain variations in a multistage optical amplifier, for the amplification of an optical wavelength multiplex signal, comprising several amplifier...
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US20080007818 |
Optical surge suppresive type optical amplifier
According to an optical surge suppressive type optical amplifier in the present invention, for a WDM optical amplifier having a multi-stages amplification configuration in which a plurality of...
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