Optical fiber network system

Details Optical fiber network system Optical fiber network system

1996-03-15

1999-04-20

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359173, 385 24, H04J 1408

Patent

active

058962131

ABSTRACT:
Disclosed is an optical fiber network system which has optical transmitter-receivers disposed in optical network units(ONUs) of number N. an optical transmitter-receiver in a central office which is connected with the ONUs through a passive splitter to form one-to-N star connection, wherein multiplexing is conducted such that a downstream signal from the central office to the ONUs is treated by time division multiplexing(TDM) and a upstream signal from the ONUs to the central office is treated by time division multiple access(TDMA), characterized in that: the passive splitter is replaced by a multi-channel/single-channel conversion cable for interfacing between an array optical fiber with cores of number M and singlecore optical fibers of number M; the optical transmitter-receiver in the central office is replaced by an array optical transmitter and an array optical receiver; and the array optical transmitter and the array optical receiver are connected with the multi-channel/single-channel conversion cable through an array optical fiber cable.

REFERENCES:
patent: 5398129 (1995-03-01), Reimann
patent: 5568576 (1996-10-01), Takai et al.
patent: 5572349 (1996-11-01), Hale et al.
J. Abiven et al., "From ISDN to ATM:Fibre in The Loop, an Evolving Scenario", 5th Conference on Optical/Hybrid Access Networks, Lecture No. 6.03, pp. 6.03.01-6.03.06.
M. Kawabata et al., "Capacity enlargement in a low-speed PON system by using multi-rate burst transmission", 6th International Workshop on Optical Access Networks, Lecture No. 2.4, pp. 2.4-1 to 2.4-5.
Y. Motegi et al., "Optical Interconnection to Modules Utilizing Fiber-Optic Parallel Transmission to Enhance Information Throughput", Hitachi Review, vol. 43, No. 2, 1994, pp. 79-81.

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