Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
1999-08-26
2003-08-05
Tweel, John (Department: 2632)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
C359S199200, C359S199200, C385S014000
Reexamination Certificate
active
06603584
ABSTRACT:
TECHNICAL FIELD
The present invention relates generally to the field of communications, and more particularly, to a system and method for optical bi-directional communication.
BACKGROUND OF THE INVENTION
Current communications systems and networks are becoming faster and more complex, using any one of number of mediums. Communication using these systems and networks is typically bi-directional in that signals are exchanged between two sources as they communicate for various purposes. More recently, fiber optic networks have been employed as the medium for communications. Typically, the optical fibers themselves may be very small and, consequently, coupling various devices to the optical fibers to create a communications link can be difficult and expensive.
An additional problem with current optical fiber communications systems is that optical fibers are often used for unidirectional communications. This is due in part to the difficulty of physically transmitting and receiving an optical signal on a single optical fiber that may be, for example, a single micron thick. Unfortunately, this results in the need for two optical fiber links to establish bi-directional communications.
SUMMARY OF THE INVENTION
The present invention provides a bidirectional optical link and method. In one possible embodiment, the bi-directional optical link comprises a detector having an upper surface facing a predetermined direction and a beam turning device located over the surface. The bidirectional optical link also includes an emitter oriented to direct a beam of light toward the beam turning device, the beam turning device redirecting the beam of light toward the predetermined direction.
The present invention may also be viewed as a method for conducting bi-directional optical communications, comprising the steps of positioning a detector having an upper surface to face a predetermined direction, placing a beam turning device over the upper surface, and, positioning an emitter so as to direct a beam of light toward the beam turning device so that the beam turning device redirects the beam of light toward the predetermined direction.
A significant advantage of the present invention is that it facilitates an increased positioning tolerance of the optical fiber with respect to the emitter/detector pair. Also, a single optical fiber can be used for bidirectional communication with significantly improved signal propagation. This is accomplished while reducing manufacturing costs of the optical link due to the increased positioning tolerance of the optical fiber.
Another advantage of the invention is that it is simple in design, user friendly, robust and reliable in operation, efficient in operation, and easily implemented for mass commercial production.
Other features and advantages of the present invention will become apparent to one with skill in the art upon examination of the following drawings and detailed description. It is intended that all such additional features and advantages be included herein within the scope of the present invention.
REFERENCES:
patent: 4422181 (1983-12-01), Grafton et al.
patent: 4611884 (1986-09-01), Roberts
patent: 4775971 (1988-10-01), Bergmann
patent: 4890895 (1990-01-01), Zavracky et al.
patent: 5347601 (1994-09-01), Ade et al.
patent: 5357363 (1994-10-01), Li et al.
patent: 5400419 (1995-03-01), Heinen
patent: 5424860 (1995-06-01), Mihara
patent: 5546212 (1996-08-01), Kunikane et al.
patent: 5818984 (1998-10-01), Ahmad et al.
patent: 6097521 (2000-08-01), Althaus et al.
patent: 6188495 (2001-02-01), Inoue et al.
patent: 6301035 (2001-10-01), Schairer
patent: 6353491 (2002-03-01), Tanaka et al.
Jokerst, et al., “Thin-Film Multimaterial Optoelectronic Integrated Circuits,” IEEE Transactions on Components, Packaging, and Manufacturing Technology-Part B, Feb. 1996, vol. 19, No. 1, pp. 97-106.
Vendier, et al., “High Efficiency Thin-Film GaAs-based MSM Photodetectors,” Electronics Letters, Feb. 15, 1996, vol. 32, No. 4, pp. 394-395.
Vendier, et al., “Stacked Silicon CMOS Circuits with a 40-Mb/x Through-Silicon Optical Interconnect,” IEEE Photonics Technology Letters, Apr. 1998, vol. 10, No. 4, pp. 606-608.
Vendier, et al., “Thin-Film Inverted MSM Photodetectors,” IEEE Photonics Technology Letters, Feb. 1996, vol. 8, No. 2, pp. 266-268.
Brooke Martin Anthony
Jokerst Nan Marie
Georgia Tech Research Corporation
Thomas Kayden Horstemeyer & Risley LLP
Tweel John
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