Optical waveguides – With optical coupler – Plural
Patent
1997-04-03
1998-10-20
Ullah, Akm E.
Optical waveguides
With optical coupler
Plural
359152, G02B 628
Patent
active
058259490
ABSTRACT:
A wavelength division multiplexer (WDM) unit (12) includes a plurality of Input/Output cards (IOCs 14). Each IOC is bidirectionally coupled to I/O specific media (fiber or copper) and to two coaxial cables. Also bidirectionally coupled to the coaxial cables are a plurality of Laser/Receiver Cards (LRC 20). The interface between the IOCs and the LRCs is an Emitter Coupled Logic (ECL) electrical interface that is conveyed over the coaxial cables. Each LRC is bidirectionally coupled by two single mode fibers to an optical multiplexer and demultiplexer, embodied within a grating (24). An input/output port of the grating is coupled to a fiber link (28) that enables bidirectional, full duplex data communications with a second WDM. Each WDM also includes a Diagnostic Processor Card (DPC 28) that receives status signals from the IOCs and LRCs, that forwards the status signals on to an external processor, and which generates control information for the IOCs and LRCs. Each IOC is associated with one of a plurality of communications channels and includes an I/O specific media connector (30) that is coupled to an appropriate transmitter (Tx) and receiver (Rx). The I/O specific media connector, Tx and Rx are constructed and operated in accordance with the specific data stream type that is input to and output from the associated channel of the WDM. By example, a first data stream may be conveyed through an optical (fiber) conductor in accordance with an ESCON protocol at 200 Mb/s, and a second data stream may be conveyed through an electrical (copper) conductor in accordance with an ECL non-specific protocol at up to 622 MB/s.
REFERENCES:
patent: 4343532 (1982-08-01), Palmer
patent: 4467468 (1984-08-01), Miller
patent: 4673270 (1987-06-01), Gordon
patent: 4792999 (1988-12-01), Stilwell, Jr.
patent: 4824193 (1989-04-01), Maeda et al.
patent: 4824200 (1989-04-01), Isno et al.
patent: 4882774 (1989-11-01), Grotzinger
patent: 4893002 (1990-01-01), Kollanyi
patent: 4941208 (1990-07-01), Olshansky et al.
patent: 5040169 (1991-08-01), Guerin et al.
patent: 5064263 (1991-11-01), Stein
patent: 5074634 (1991-12-01), Takahashi
patent: 5157530 (1992-10-01), Loeb et al.
patent: 5224183 (1993-06-01), Dugan
patent: 5226100 (1993-07-01), Maerz
patent: 5347601 (1994-09-01), Ade et al.
patent: 5392377 (1995-02-01), Auracher
"A Wavelength Division Multiple Access Network for Computer Communication", Nicholas R. Dono et al., IEEE Journal On Selected Areas In Communications, vol. 8, No. 6, Aug. 1990.
Dense Wavelength Division Multiplexing Networks: Principles and Applications, Charles A. Brackett, IEEE Journal On Selected Areas In Communications, vol. 8, No. 6, Aug. 1990.
"A Wavelength Division Multiple Acess Network for computer Communication", Nicholas R. Dono et al, IEEE Jout=rnal on selected areas in communications, vol.8, No. Aug. 1990.
""dense Wavelength Division Multiplexing Networks: Principles and Applications, Charles A. Brackett, IEEE Journal on selected areas in communications, vol. 8, No.6, Aug. 1990.
"A Prototype Circuit-Switched Multi-Wavelength Optical Metropolitan-Area Network" Frank J. Janniello et al., Journal of Lightwave Technology, vol. 11, No. 516 (May 1993).
"Grass Valley Group Wavelink Analog Fiber Optic System", (undated) (4 pages).
"Optical Wavelength Multiplexing for Local Networks", Hermann Lentke, (Jan. 1994).
Choy Michael M.
Green, Jr. Paul Eliot
Hall William Eric
Janniello Frank James
Kravitz Jeff Kenneth
International Business Machines - Corporation
Ullah Akm E.
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