Optical bus using controllable optical devices

Details Optical bus using controllable optical devices Optical bus using controllable optical devices

1993-06-25

1996-05-07

Boudreau, Leo

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359127, 359113, 385 24, 385 42, H04J 1402

Patent

active

055151957

ABSTRACT:
A bidirectional optical bus and bus interface. Each functional unit (35, 37) includes an active coupler (60, 70) for each bus line (40a, 40b) with which it is to interface. Each coupler is a four-port device, controllable to assume a desired one of at least two states characterized by different coupling coefficients. In the first state, a significant fraction (possibly all) of the light incoming to the first port (65a) is coupled to the fourth port (65d) and a significant fraction of the light incoming to the second port (65b) is coupled to the third port (65c). In the second state, most of the light incoming to the first port is coupled to the second port with a small fraction coupled to the fourth port, and most of the light incoming to the second port is coupled to the first port with a small fraction coupled to the third port. The couplers for a given bus line are serially connected with their respective first and second ports in line with the optical bus medium, and light is injected into the optical medium from both ends. A functional unit places data onto the bus by controlling its coupler according to a desired data pattern to switch between the first state and another state of significantly lower coupling coefficient.

REFERENCES:
patent: 4633202 (1986-12-01), Basile et al.
patent: 4674827 (1987-06-01), Izutsu et al.
patent: 4910727 (1990-03-01), Fussganger
patent: 5018815 (1991-05-01), Cox et al.
patent: 5148503 (1992-09-01), Skeie
patent: 5295011 (1994-03-01), Heise
patent: 5329601 (1994-07-01), Nakamura
patent: 5347601 (1994-09-01), Ade et al.
patent: 5359449 (1994-10-01), Nishimoto et al.
Takato et al, Silica-Based Single Mode Waveguides Silicon and Their Application to Guided-Wave Optical Interferometers, Jun. 1988, all.
Mark J. Karol, "Exploiting the Attenuation of Fiber-Optic Passive Taps to Create Large High-Capacity LAN's and MAN's," Journal of Lightwave Technology, vol. 9, No. 3, Mar. 1991, pp. 400-408.
Carl A. Villarruel et al., "Single-Mode Data Buses for Local Area Network Applications," Journal of Lightwave Technology, vol. LT-3, No. 3, Jun. 1985, pp. 472-477.
Michael B. Miller, "Linear Fiber Optic Data Bus for Aircraft Applications," SPIE, vol., 840, Fiber Optic Systems for Mobile Platforms (1987), pp. 128-135.
William G. Briscoe, "Fiber Optic Data Bus Networks," IEEE Proceedings--1989 Southeastcon, pp. 1140-1144.
M. Mehdi Nassehi et al., "Fiber Optic Configurations for Local Area Networks," IEEE Journal on Selected Areas in Communications, vol. SAC-3, No. 6, Nov. 1985, pp. 941-949.
F. Auracher et al., "Optimized Layout for a Data Bus System Based on a New Planar Access Coupler," Applied Optics, vol. 16, No. 12, Dec. 1977.
Nicholas F. Maxemchuk, "Twelve Random Access Strategies for Fiber Optic Networks," IEEE Transactions on Communications, vol. 36, No. 8, Aug. 1988, pp. 942-950.
Kazuyoshi Oshima, "Fiber-Optic Local Area Passive Network Using Burst TDMA Scheme," Journal of Lightwave Technology, vol. LT-3, No. 3, Jun. 1985, pp. 502-509.
Shigeo Matsushita, "Fiber Optic Devices for Local Area Network Application," Journal of Lightwave Technology, vol., LT-3, No. 3, Jun. 1985, pp. 544-555.
S. Y. Suh et al., "Fiber Optic Local Area Network Topology," IEEE Communications Magazine, Aug. 1986, vol. 24, No. 8, pp. 26-32.

Affiliated with

Also associated with

Rating

Optical bus using controllable optical devices 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 bus using controllable optical devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical bus using controllable optical devices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1231676