Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2005-06-07
2005-06-07
Tarcza, Thomas H. (Department: 3663)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S016000
Reexamination Certificate
active
06904238
ABSTRACT:
A system and method that effectively measures the polarization dependent gain of an optical amplifier without significantly introducing error into that measurement is provided. A saturating optical signal source generates an optical signal capable of saturating the optical amplifier. A slow polarization scrambler then randomly polarizes the optical signal to yield a polarized optical signal, which is used as an input signal of the optical amplifier. The output signal of the optical amplifier is then transferred to a fast polarization scrambler, resulting in a PDG measurement signal, which is then presented to an optical signal analyzer that measures the intensity level of each channel of the PDG measurement signal. Alternately, a wavelength division multiplexing (WDM) polarization mixer is employed to mix the polarization states of WDM channels of the polarized optical signal from the slow polarization scrambler with respect to each other, yielding the input signal for the optical amplifier under test.
REFERENCES:
patent: 5345331 (1994-09-01), Bergano et al.
patent: 5841557 (1998-11-01), Otsuka et al.
patent: 6576886 (2003-06-01), Yao
patent: 6611369 (2003-08-01), Matsushita et al.
patent: 2001/0055133 (2001-12-01), Yamaguchi et al.
patent: 2003/0039005 (2003-02-01), Roberts et al.
Heismann, Fred. Compact Electro-Optic Polarization Scramblers for Optically Amplfied Lightwave Systems. Journal of Lightwave Technology. vol. 14. No. 8. Aug. 1996. pp. 1801-1814.
Bruyere et al. Demonstration of an Optimal Polarization Scrambler for Long-Haul Optical Amplifier Systems. IEEE Photonics Technology Letters. vol. 6. No. 9. Sep. 1994. pp. 1153-1155.
Beal David A.
Miller Patricia S
Hughes Deandra M.
Tarcza Thomas H.
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