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Nonlinear polarization amplifiers in nonzero dispersion shifted fiber Number:6,760,148 from the United States Patent and Trademark Office (PTO) owispatent

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Title: Nonlinear polarization amplifiers in nonzero dispersion shifted fiber

Abstract: A broadband fiber transmission system includes a transmission line with at least one zero dispersion wavelength .lambda..sub.o and transmits an optical signal of .lambda.. The transmission line includes a distributed Raman amplifier that amplifies the optical signal through Raman gain. One or more semiconductor lasers are included and operated at wavelengths .lambda..sub.p for generating a pump light to pump the Raman amplifier. .lambda. is close to .lambda..sub.o and .lambda..sub.0 is less than 1540 nm or greater than 1560 nm.

Patent Number: 6,760,148 Issued on 07/06/2004 to Islam


Inventors: Islam; Mohammed N. (Allen, TX)
Assignee: Xtera Communications, Inc. (Allen, TX)
Appl. No.: 09/766,489
Filed: January 19, 2001


Related U.S. Patent Documents

Application NumberFiling DatePatent NumberIssue Date
760201Jan., 2001
565776May., 20006239902
046900Mar., 19986101024

Current U.S. Class: 359/334 ; 359/337; 359/341.5; 372/3; 372/6
Current International Class: H01S 3/06 (20060101); H01S 3/067 (20060101); H04B 10/17 (20060101); H01S 3/30 (20060101); H01S 3/081 (20060101); H01S 3/094 (20060101); H01S 3/083 (20060101); H01S 3/108 (20060101)
Field of Search: 359/334,337,337.5,341.5 372/3,6


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Primary Examiner: Moskowitz; Nelson
Attorney, Agent or Firm: Baker Botts L.L.P.

Parent Case Text



CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation-in-part of 09/760,201, filed Jan. 12, 2001, and 09/565,776, filed May 5, 2000, now U.S. Pat No. 6,239,902 which is a continuation of 09/046,900 filed Mar. 24, 1998 now U.S. Pat. No. 6,101,024. All the above applications are fully incorporated herein by reference.
Claims




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