Optical communications system

Details Optical communications system Optical communications system

1996-03-25

1998-11-17

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359167, 359191, H04B 1000, H04B 1006

Patent

active

058384731

ABSTRACT:
An optical communication system used for the distribution of a signal includes a central station having an optical source. One or more remote stations are connected to the central station by an optical network. The central station outputs onto the network a carrier signal and an intermediate frequency signal. The remote station includes an optical mixer/detector which mixes the carrier and intermediate frequency signal both in the optical domain and outputs an RF electrical signal. The optical mixer/detector may be a heterojunction bipolar phototransistor (HBT). The optical source in the central station may be a dual-mode semiconductor laser.

REFERENCES:
patent: 4868894 (1989-09-01), Gilden et al.
patent: 5535044 (1996-07-01), Takeshima et al.
Pavlidis, D "Millimeter-Wave and Optoelectronic Applications of Heterostructure Integrated Circuits" Proceedings of the SPIE, Oct. 28. 1990.
Pavlidis "Millimeter-Wave and Optoelectronic Applications of Heterostructure Integrated Circuits", SPIE, vol. 1362, Physical Concepts of Materials for Novel Optoelectronic Device Aplications II: Device Physics and Applications (1990).

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