Light communication system

Details Light communication system Light communication system

1992-05-22

1993-05-25

Ullah, Akm E.

Optical waveguides

With optical coupler

Plural

359152, G02B 600

Patent

active

052147282

ABSTRACT:
A bi-directional optical communication system. A first optical fiber includes a plurality of pieces, each piece having a first and second end. An optical amplifier for amplifying optical signals transmitted in a first direction is coupled to first and second pieces of the first optical fiber. A second optical fiber is coupled to the first and second pieces, bypasses the optical amplifier and transmits optical signals in a second direction opposite to the first direction. A first optical signal generator apparatus coupled to the first piece of the first optical fiber provides optical signals propagating in the first direction to a optical receiver apparatus coupled to the second piece of the first optical fiber. A second optical signal generator in the optical receiver apparatus provides optical signals propagating in the second direction to the first optical signal generator apparatus. A second optical receiver and a monitor, both in the first optical signal generator apparatus, receive the optical signals propagating in the second direction and monitor various operating conditions of the optical communication system.

REFERENCES:
patent: 4781427 (1988-11-01), Husbands et al.
patent: 4878726 (1989-11-01), Fatehi
patent: 4889404 (1989-12-01), Bhagavatula et al.
patent: 4933990 (1990-06-01), Mochizuki et al.
K. Hagimoto et al, PD 15, Optical Fiber Communicaton Conference, '89.
K. Kikushima et al, PD 22, Optical Fiber Communication Conference '90.

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