Optical communication system suitable for selective reception of

Details Optical communication system suitable for selective reception of Optical communication system suitable for selective reception of

1992-11-18

1996-01-09

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359133, 359161, 359181, 359189, 359191, H04J 1402, H04B 1006

Patent

active

054833680

ABSTRACT:
An optical communication system suitable for selective reception of multiple services, which facilitates the adaptation of the already existing service network to an expansion of the service of the system by incorporating additional services, inexpensively, without causing the inconvenience to the subscribers of the system. In the system, the intensity modulated light signals with a first wavelength and the angle modulated light signals with a second wavelength are transmitted through the optical fiber communication lines in a form of multiplexed light signals. Then, the intensity modulated light signals in the multiplexed light signals are received and demodulated by using a direct detection, while the angle modulated light signals in the multiplexed light signals transmitted are received and demodulated from the multiplexed light signals. The selective detection of the angle modulated light signals is preferably made by a balanced optical heterodyne/homodyne receiver.

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Chaffaut, et al., IEEE Global Telecommunications Conference & Exhibition '90, 303.2, pp. 120-124, "An ATM cell based transmission system on a pon structure".
Conference: ICC '80, 1980, Seattle, Wash., USA, all.

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