Optical telephone using optical modulator

Details Optical telephone using optical modulator Optical telephone using optical modulator

1993-05-07

1994-10-18

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359188, 359173, 359195, 385 4, 385 13, H04B 1012, H04B 1004, G02B 626

Patent

active

053573625

ABSTRACT:
An optical modulation method operable in an optical transmission path using an optical fiber, wherein an optical fiber bending region is formed by bending a portion of the optical fiber into a U shape having a predetermined bending width. A bending width set point is set in correspondence with a predetermined inclined portion of a characteristic curve representing a dependency ratio of insertion loss of light propagating in said optical fiber bending region relative to the bending width thereof, said predetermined inclined portion of said characteristic curve being located between a predetermined maximum and minimum portion thereof. Intensity modulation of light propagating in the optical fiber is performed using a signal to be transmitted by adjusting the bending width of the optical fiber bending region in correspondence with the signal to be transmitted with reference to the bending width set point as a center. An optical telephone uses an optical modulator including an optical fiber having a U-shaped bending region and a transducer for vibrating one straight portion of the optical fiber.

REFERENCES:
patent: 3464027 (1969-08-01), DeMaria
patent: 4071753 (1978-01-01), Fulenwider et al.
patent: 4294513 (1981-10-01), Nelson et al.
patent: 4488040 (1984-12-01), Rowe
patent: 4667097 (1987-05-01), Fasching et al.
patent: 4789213 (1988-12-01), Heywang
patent: 4848872 (1989-07-01), Shigematsu et al.
patent: 5138676 (1992-08-01), Stowe et al.
patent: 5259045 (1993-11-01), Azuma
Article entitled Core Alignment Procedure for Single-Mode-Fibre Jointing by C. M. de Blok, et al., published in Electronics Letters, Feb. 2, 1984, vol. 20, No. 4, pp. 109-110.
Article entitled Splice Loss Measurement Using Local Launch and Detect by V. C. Y. so, et al, published-Journal of Lightwave Technology, Dec., 1987, vol. LT-5, No. 12, pp. 1663-1666.
Article entitled A Method for Identifying Single-Mode Fibers in an Operating Fiber Cable System by K. Arakawa, et al, published in International Wire & Cable Proceedings 1989, pp. 88-93.

Affiliated with

Also associated with

Rating

Optical telephone using optical modulator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical telephone using optical modulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical telephone using optical modulator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2376390