Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1994-08-01
1997-11-25
Chin, Wellington
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359181, 375219, 375295, 370537, H04J 1400, G02F 200
Patent
active
056918321
ABSTRACT:
In a transmitter in a coherence multiplexed transmission system the output signal of a laser is directly applied to a channel and indirectly via a plurality of cascaded circuits of delay elements and modulators. The modulators vary a component of the autocorrelation function of the output signal of the transmitter as a function of an associated modulation signal (m.sub.1, m.sub.2, m.sub.3). In the receiver the autocorrelation functions values of the channel output signal for delays (D.sub.1, D.sub.2, D.sub.3) are determined in the demodulators. These autocorrelation function values from the modulated signal (m.sub.1 ', m.sub.2 ', m.sub.3 '). To reduce the number of periodic components of the autocorrelation function of the signal source, and hence enhance the possible transmission capacity, the transmitter comprises a decorrelation modulator for modulating the signal source with pulses generated by a pulse generator.
REFERENCES:
patent: 4860279 (1989-08-01), Falk et al.
patent: 4882775 (1989-11-01), Coleman
patent: 4956834 (1990-09-01), Coleman
patent: 5200964 (1993-04-01), Huber
patent: 5416628 (1995-05-01), Betti et al.
patent: 5453865 (1995-09-01), Faulkner et al.
"Analysis of Optical Crosstalk in Coherence Multiplexed Systems Employing a Short Coherence Laser Diode with Arbitrary Power Spectrum", by Goedgebuer et al, IEEE Journ. of Quantum Elec., vol. 26, No. 7, Jul. '90, pp. 1217-1226.
Liedenbaum Coen T.H.F.
Reid John J.E.
Chin Wellington
Corrielus Jean B.
Eason Leroy
U.S. Philips Corporation
LandOfFree
Coherence multiplexed transmission system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Coherence multiplexed transmission system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coherence multiplexed transmission system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2111713