Optical signal noise reduction device and method of reducing...

Details Optical signal noise reduction device and method of reducing... Optical signal noise reduction device and method of reducing...

2005-06-28

2005-06-28

Healy, Brian (Department: 2883)

Optical waveguides

With optical coupler

Plural

C385S015000, C385S016000, C385S018000

Reexamination Certificate

active

06912338

ABSTRACT:
An optical signal noise reduction device and method, where optical control signals are input into a first ring optical fiber, so that optical signals propagates clockwise and counter-clockwise in the optical fiber, with optical control signals propagating either clockwise or counter-clockwise in the first ring optical fiber. Optica signals propagating in the same direction as the optical control signals are affected with cross phase modulation with the optical control signals, while optical signals propagating in the opposite direction as the optical control signals are not affected with cross phase modulation with the optical control signals. The two kinds of the optical signals are then interfered with each other at the optical output to reduce noise of the optical.

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Sotobayashi, H, et al., “1.6-b/slHz 6.4-Tb/s QPSK-OCDM/WDM (4 OCDM×40 WDM×40 Gb/S) Transmission Experiment Using Optical Hard Thresholding,” IEEE Photonics Technology Letters, vol. 14, No. 4, Apr. 2002, pp. 555-557.

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