# US 5,710,650 A · Dispersion-reducing multiple wavelength division multiplexing optical fiber transceiver and methods for using and assembling same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,710,650 A - Document ID: US5710650A - Status: Granted - Kind: A - Application number: 08/615,974 - Filed: 1996-03-14 - Granted: 1998-01-20 - Earliest claimed: 1996-03-14 - Assignees: Alcatel Network Systems, Inc. - Inventors: John Michael Dugan - Web page: https://patentgrep.com/patent/US5710650A ## CPC - H04J 3/0626: {plesiochronous multiplexing systems, e.g. plesiochronous digital hierarchy [PDH], jitter attenuators} - H04J 14/0307: {Multiplexers; Demultiplexers} - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) ## Abstract A dispersion tolerant OC-192 optical transceiver includes the circuitry for implementing the method of reducing optical signal dispersion in a high data rate data stream that travels on an optical fiber communications system. The circuitry includes circuitry for partitioning the high data rate data stream into a plurality of lower data rate data streams. The transceiver transmits the plurality of lower data rate data streams along an associated one of a plurality of separate wavelength channels. A wavelength division multiplexing circuit multiplexes each of the lower data rate data streams on the plurality of separate wavelength channels into a single optical fiber assembly to form a multiplexed signal. The wavelength division multiplexing circuit further transmits the multiplexed lower data rate signal along the single optical fiber assembly. ## Claims ### Claim 1 A method for reducing the effects of optical signal dispersion in a high data rate data stream traveling on an optical fiber communications system, comprising the steps of: partitioning the high data rate data stream into a plurality of lower data rate data streams; transmitting each of said plurality of lower data rate data streams along an associated one of a plurality of separate wavelength channels; multiplexing each of said lower data rate data streams on said plurality of separate wavelength channels into a lower data rate optical fiber assembly to form a multiplexed signal; transmitting said multiplexed lower data rate signal along said lower data rate optical fiber assembly; receiving said lower data rate data streams from said lower data rate optical fiber assembly; and demultiplexing said lower data rate data streams including the necessary time re-alignment of said lower rate date streams, to form a received high data rate data stream. ### Claim 2 (depends on 1) The method of claim 1, further comprising the step of transmitting said plurality of lower data rate data streams with limited chromatic dispersion a distance of not less than approximately 600 km or more. ### Claim 3 (depends on 1) The method of claim 1, further comprising the step of transmitting said plurality of lower data rate data streams with limited polarization mode dispersion a distance of not less than approximately sixteen times the distances achievable using TDM multiplexing methods. ### Claim 4 (depends on 1) The method of claim 1, further comprising the step of performing wavelength division multiplexing steps in a manner that is not noticeable to a system user. ### Claim 5 (depends on 1) The method of claim 1, further comprising the step of transmitting said plurality of lower data rate data streams through a single optical fiber. ### Claim 6 (depends on 1) The method of claim 1, further comprising the step of transmitting said plurality of lower data rate data streams at a data rate of significantly less than 10 Gb/s. ### Claim 7 An apparatus for reducing the effects of optical signal dispersion in a high data rate data stream traveling on an optical fiber communications system, comprising: partitioning circuitry for partitioning the high data rate data stream into a plurality of lower data rate data streams; separate wavelength transmission circuitry for transmitting each of said plurality of lower data rate data streams along an associated one of a plurality of separate wavelength channels; multiplexing circuitry for multiplexing each of said lower data rate data streams on said plurality of separate wavelength channels into a single optical fiber assembly to form a multiplexed signal; lower data rate fiber transmission circuitry for transmitting said multiplexed lower data rate signal along said single optical fiber assembly; receiving circuitry for receiving said lower data rate data streams from said single optical fiber assembly; and demultiplexing circuitry for demultiplexing said lower data rate data streams, including the necessary time re-alignment of said lower rate date streams, to form a received high data rate data stream. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein said lower data rate fiber transmission circuitry further comprises circuitry for transmitting said plurality of lower data rate data streams with limited chromatic dispersion a distance of not less than approximately 600 km or more. ### Claim 9 (depends on 7) The apparatus of claim 7, wherein said lower data rate transmission circuitry further comprises circuitry for transmitting said plurality of lower data rate data streams with limited polarization mode dispersion a distance of not less than approximately sixteen times the distances achievable using TDM multiplexing methods. ### Claim 10 (depends on 7) The apparatus of claim 7, wherein said multiplexing circuitry further comprises circuitry for performing wavelength division multiplexing steps in a manner that is not noticeable to a system user. ### Claim 11 (depends on 7) The apparatus of claim 7, wherein said lower data rate transmission circuitry further comprises circuitry for transmitting said plurality of lower data rate data streams through a single optical fiber. ### Claim 12 (depends on 7) The apparatus of claim 7, wherein said lower data rate transmission circuitry further comprises circuitry for transmitting said plurality of lower data rate data streams at a data rate of significantly less than 10 Gb/s. ### Claim 13 A method for assembling an apparatus for reducing the effects of optical signal dispersion in a high data rate data stream traveling on an optical fiber communications system, said method comprising the steps of: assembling partitioning circuitry for partitioning the high data rate data stream into a plurality of lower data rate data streams; assembling separate wavelength transmission circuitry for transmitting each of said plurality of lower data rate data streams along an associated one of a plurality of separate wavelength channels; assembling multiplexing circuitry for multiplexing each of said lower data rate data streams on said plurality of separate wavelength channels into a single optical fiber assembly to form a multiplexed signal; assembling lower data rate fiber transmission circuitry for transmitting said multiplexed lower data rate signal along said single optical fiber assembly; assembling receiving circuitry for receiving said lower data rate data streams from said single optical fiber assembly; and assembling demultiplexing circuitry for demultiplexing said lower data rate data streams, including the necessary time re-alignment of said lower rate date streams, to form a received high data rate data stream. ### Claim 14 (depends on 13) The method of claim 13, further comprising the steps of assembling said lower data rate fiber transmission circuitry to comprise circuitry for transmitting said plurality of lower data rate data streams with limited chromatic dispersion a distance of not less than approximately 600 km or more. ### Claim 15 (depends on 13) The method of claim 13, further comprising the steps of assembling said lower data rate transmission circuitry to comprise circuitry for transmitting said plurality of lower data rate data streams with limited polarization mode dispersion a distance of not less than approximately sixteen times the distances achievable using TDM multiplexing methods. ### Claim 16 (depends on 13) The method of claim 13, further comprising the steps of assembling said multiplexing circuitry to comprise circuitry for performing wavelength division multiplexing steps in a manner that is not noticeable to a system user. ### Claim 17 (depends on 13) The method of claim 13, further comprising the steps of assembling said lower data rate transmission circuitry to comprise circuitry for transmitting said plurality of lower data rate data streams through a single optical fiber. ### Claim 18 (depends on 13) The method of claim 13, further comprising the steps of assembling said lower data rate transmission circuitry to comprise circuitry for transmitting said plurality of lower data rate data streams at a data rate of significantly less than 10 Gb/s.