Optical distribution device, optical distribution circuit, and s

Details Optical distribution device, optical distribution circuit, and s Optical distribution device, optical distribution circuit, and s

1994-03-09

1996-11-19

Boudreau, Leo

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

385 17, 385 24, H04J 1400, G02B 626

Patent

active

055768725

ABSTRACT:
Optical paths to propagate a plurality of optical information signals intersect optical paths to transmit light signals to a plurality of subscribers. Light power dividing and propagation direction changing devices for separating requested optical information signals are arranged at the intersecting points. Losses of the optical information signals due to the separation, are compensated by optical amplification, so that the signals can be distributed to all of the subscribers while maintaining a predetermined intensity. Thus, the same photosignal can be distributed to a plurality of subscribers. The system can be easily expanded in correspondence to an increase in the number of optical information signals and an increase in the number of subscribers.

REFERENCES:
patent: 5044745 (1991-09-01), Inoue et al.
Minoru Akiyama, et al. "Digital Telephone Exchange" (1986).
Journal of Lightwave Technology, vol. 9, No. 7 (1991) pp. 871-877.
Journal of Selected Areas in Communications, No. 7, (1988), pp. 1248-1254.
Translations of the Institute of Electronics, Information and Communication Engineers of Japan, vol. E75-B, No. 4, Apr. 1992, Tokyo, JP, pp. 235-242, S. Suzuki et al.: Trend of Photonic Switching Systems.

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