Bidirectional lightwave transmission system

Details Bidirectional lightwave transmission system Bidirectional lightwave transmission system

1992-09-02

1994-05-10

Chilcot, Jr., Richard E.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359120, 359132, 359137, 359152, H04J 1402

Patent

active

053113446

ABSTRACT:
Bidirectional, non-interfering transmission of broadband services on a single fiber is accomplished by simultaneously combining wavelength-division, time-division, and subcarrier multiplexing on the downstream and upstream transmissions. High speed electrical data signals are time-division multiplexed at the exchange into a composite signal which modulates a standard diode laser operating at a first wavelength. Data signals from an individual subscriber are modulated onto a subcarrier designated solely for the particular subscriber which, in turn, modulates a laser operating at a second wavelength. Extraction and insertion of the upstream and downstream transmissions at the subscriber and exchange locations is accomplished with wavelength selective couplers.

REFERENCES:
patent: 4726010 (1988-02-01), Ali et al.
patent: 5119223 (1992-06-01), Panzer et al.
patent: 5221983 (1993-06-01), Wagner

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