Multiple polarization sensitive detection arrangement for fiber

Details Multiple polarization sensitive detection arrangement for fiber Multiple polarization sensitive detection arrangement for fiber

1992-04-02

1995-02-07

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359156, 359192, H04B 1000

Patent

active

053880889

ABSTRACT:
Transmission capacity of an optical fiber is increased by transmitting two optical signals of orthogonal polarizations through the fiber and distinguishing the signals from one another at the receiver by appropriately weighting polarization components representative of the transmitted signals. The weighted polarization components are summed to provide two output electrical signals that are proportional in magnitude to the two transmitted optical signals. Appropriate weighting of the signals eliminates cross-channel interference and maximizes the signal to noise ratio. Signals of arbitrary received polarizations are detected and separated from one another.

REFERENCES:
R. Cross et al., "Polarization Measurement Goes Automatic", Lasers & Optronics, Nov. 1991, p. 25-26.
L. Seto et al., "Coherent Optical Polarization-Shift-Keying (POLSK) Homodyne System Using Phase-Diversity Receivers," IEEE Global Telecomm. Conference, Phoenix, Arizona, Dec. 2-5, 1991, pp. 1601-1605.
R. Clavani et al., "An Experiment Of Optical Heterodyne Transmission With Polarization Modulation At 140 Mbit/s Bitrate And 1550 nm Wavelength", IEEE Global Telecommunications Conference, phoenix, Arizona, Dec. 2-5, 1991, pp. 1587-1591.
S. G. Evangelides, Jr. et al., "Polarization Multiplexing With Solitons", Jour. of Lightwave Technology, vol. 10, No. 1, Jan. 1992, pp. 28-35.
Goedge Buer, "Multiplex communication via E-O phase Modulation of White Light" Optica Acta 1982 vol. 29 #4 pp. 471-477.
Denton, "The Laser and PCM", Bell Labs Record vol. 46, #6, Jun. 1968 pp. 175-179.

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