公开(公告)号：CA2291556A1

公开(公告)日：2000-07-26

申请号：CA2291556

申请日：1999-11-26

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ESPINDOLA ROLANDO PATRICIO ,  STRASSER THOMAS ANDREW ,  ROGERS JOHN A ,  MAVOORI HAREESH ,  JIN SUNGHO ,  ADAMS LAURA ELLEN ,  EGGLETON BENJAMIN JOHN

IPC: G02B5/18 ,  G02B1/10 ,  G02B6/02 ,  G02B6/34 ,  G02B26/00 ,  G02F1/01 ,  H04B10/02 ,  H04B10/18 ,  H04B10/43 ,  H04B10/17 ,  H04J14/02

Abstract: A tunable chromatic dispersion compensator for optical communication systems is disclosed. An optical grating, such as a fiber Bragg grating, non-chirped, linearly chirped or non-linearly chirped, is coated on its outer surface with a coating have a variable diameter and strained is applied to the fiber. The fiber may be latchably strained so that the grating characteristics may be changed or tuned while avoiding use of a continuous power supply. Various optical networking applications using such dispersion compensating devices are also disclosed.

公开(公告)号：AU4588699A

公开(公告)日：2000-03-16

申请号：AU4588699

申请日：1999-09-01

Applicant: LUCENT TECHNOLOGIES INC

Inventor： STRASSER THOMAS ANDREW ,  WAGENER JEFFERSON LYNN

IPC: G02B6/02 ,  G02B5/18 ,  G02B6/024 ,  G02B6/34 ,  G02B6/17 ,  G02B6/18 ,  H04B10/18

Abstract: A dispersion compensating chirped optical fiber Bragg grating (11) according to our invention is formed in polarization maintaining (PM) fiber (32) having birefringence of at least 10 , preferably 10 or more. Use of the PM fiber makes possible substantial cancellation of the polarization mode dispersion that typically is unavoidably present in chirped Bragg gratings for dispersion compensation.

公开(公告)号：DE60036970D1

公开(公告)日：2007-12-20

申请号：DE60036970

申请日：2000-02-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： EGGLETON BENJAMIN JOHN ,  NIELSEN TORBEN N ,  ROGERS JOHN A ,  STRASSER THOMAS ANDREW ,  WALKER KENNETH LEE

IPC: H04B10/02 ,  H04B10/18

公开(公告)号：DE69903896T2

公开(公告)日：2003-07-24

申请号：DE69903896

申请日：1999-08-23

Applicant: LUCENT TECHNOLOGIES INC

Inventor： STRASSER THOMAS ANDREW ,  WAGENER JEFFERSON LYNN

IPC: G02B6/02 ,  G02B5/18 ,  G02B6/024 ,  G02B6/34 ,  G02B6/16

Abstract: A dispersion compensating chirped optical fiber Bragg grating (11) according to our invention is formed in polarization maintaining (PM) fiber (32) having birefringence of at least 10 , preferably 10 or more. Use of the PM fiber makes possible substantial cancellation of the polarization mode dispersion that typically is unavoidably present in chirped Bragg gratings for dispersion compensation.

公开(公告)号：DE60000416T2

公开(公告)日：2003-05-22

申请号：DE60000416

申请日：2000-12-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： STRASSER THOMAS ANDREW ,  WESTBROOK PAUL STEPHEN

IPC: G02B6/02 ,  G02B6/12 ,  G02B6/14 ,  G02B6/34 ,  G02B6/293 ,  G02B6/124

Abstract: Disclosed is an article that comprises an optical waveguide mode converter for converting light of wavelength lambda in a few-moded optical waveguide from a given guided mode (e.g., LP01.f) to another guided mode (e.g., LP02.b). The converter comprises a tilted refractive index grating in the core of the waveguide. Appropriate choice of the refractive index profile n(r), photosensitivity p(r) and tilt angle&thetas; makes possible substantial nulling of the coupling between some guided modes (e.g., LP01.f to LP01.b, and LP01.f to LP11.b), and substantial maximization of the coupling between other guided modes (e.g., LP01.f to LP02.b). Mode converters according to the invention can be advantageously used in optical fiber communication systems in add/drop multiplexers.

公开(公告)号：DE60001239D1

公开(公告)日：2003-02-27

申请号：DE60001239

申请日：2000-02-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ESPINDOLA ROLANDO PATRICIO ,  STRASSER THOMAS ANDREW ,  WESTBROOK PAUL STEPHEN ,  WYSOCKI PAUL FRANCIS

IPC: H01S3/06 ,  H01S3/067 ,  H01S3/10

Abstract: L-band EDFA (Er-doped fiber amplifier) characteristics are improved by provision of filter means in the C-band, the filter means having a figure of merit greater than 400dB.nm. The filter means can be discrete and/or distributed filter means. In preferred embodiments, two or more full C-band blazed fiber Bragg gratings are used.

公开(公告)号：DE60000416D1

公开(公告)日：2002-10-10

申请号：DE60000416

申请日：2000-12-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： STRASSER THOMAS ANDREW ,  WESTBROOK PAUL STEPHEN

IPC: G02B6/02 ,  G02B6/12 ,  G02B6/14 ,  G02B6/34 ,  G02B6/293 ,  G02B6/124

Abstract: Disclosed is an article that comprises an optical waveguide mode converter for converting light of wavelength lambda in a few-moded optical waveguide from a given guided mode (e.g., LP01.f) to another guided mode (e.g., LP02.b). The converter comprises a tilted refractive index grating in the core of the waveguide. Appropriate choice of the refractive index profile n(r), photosensitivity p(r) and tilt angle&thetas; makes possible substantial nulling of the coupling between some guided modes (e.g., LP01.f to LP01.b, and LP01.f to LP11.b), and substantial maximization of the coupling between other guided modes (e.g., LP01.f to LP02.b). Mode converters according to the invention can be advantageously used in optical fiber communication systems in add/drop multiplexers.

公开(公告)号：CA2337706A1

公开(公告)日：2001-09-08

申请号：CA2337706

申请日：2001-02-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： WESTBROOK PAUL STEPHEN ,  ERDOGAN TURAN ,  STRASSER THOMAS ANDREW

IPC: H04B10/135 ,  H04J14/02 ,  H04B10/18

Abstract: Polarization monitoring and control in a lightwave communication system is achieved by using an in-line polarimeter in conjunction with a polarization controller. The devices are readily compact, accurate and therefore capable of implementation in a variety of system applications. In one embodiment, a polarimeter and controller can be coupled together by a feedback loop between the polarimeter output and the controller input to provide "active polarization control" (APC).

公开(公告)号：CA2332068A1

公开(公告)日：2001-09-03

申请号：CA2332068

申请日：2001-01-23

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HALE ARTURO ,  WESTBROOK PAUL STEPHEN ,  STRASSER THOMAS ANDREW

IPC: G02B6/02 ,  C03C25/24 ,  G02B5/18 ,  G02B6/10 ,  G02B6/34 ,  G02B6/44

Abstract: In accordance with the invention, an optical fiber Bragg grating comprises a length of gloss optical fiber having a core, a Bragg grating formed along the core, a glass cladding and a polymer coating on the cladding havin g an index of refraction matched to that the cladding. Such index matching can reduce the cladding mode loss by a factor of four over current levels. A preferred coating material comprises fluorinated urethane acrylate.