公开(公告)号：JP2000241678A

公开(公告)日：2000-09-08

申请号：JP2000037110

申请日：2000-02-15

Applicant: LUCENT TECHNOLOGIES INC

Inventor： EGGLETON BENJAMIN JOHN ,  JACKMAN REBECCA JANE ,  ROGERS JOHN A ,  STRASSER THOMAS ANDREW

IPC: C03C25/42 ,  C03C25/10 ,  C03C25/22 ,  G02B6/02 ,  G02B6/44

Abstract: PROBLEM TO BE SOLVED: To provide an optical fiber provided with a metal coating layer of variable thickness. SOLUTION: This manufacturing method comprises a step for preparing a shadow mask 32 to specify an optical fiber 30 to be coated and a coating pattern, a step for arranging the shadow mask 32 between a metal source 31 and the fiber 30 to deposit coating metal from the metal source 31 onto the optical fiber 30, and a step for activating the metal source 31 to emit the coating metal and for moving the shadow mask 32 with respect to the optical fiber 30. Travel, onto the optical fiber 30, of the metal of the metal source 31 is controlled therein.

公开(公告)号：JP2002344389A

公开(公告)日：2002-11-29

申请号：JP2002070749

申请日：2002-03-14

Applicant: LUCENT TECHNOLOGIES INC

Inventor： EGGLETON BENJAMIN JOHN ,  MAHGEREFTEH DANIEL ,  STEINVURZEL PAUL ,  WESTBROOK PAUL STEPHEN

IPC: H01S5/024 ,  H01S5/062 ,  H01S5/0687 ,  H04B10/00 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/155

Abstract: PROBLEM TO BE SOLVED: To provide an RZ pulse source which has high power and is jitter-free, compact (inexpensive) and power efficient. SOLUTION: The modulated RZ pulse source has a modulated light source optically and a optical trap coupled to a stabilized Bragg grating filter. The light source is modulated in power and frequency, and has an adjusted channel wavelength λ. The Bragg grating filter has a reflective bandwidth having a high slope reflective cutoff, and is preferably tunable. By a feedback arrangement responsive to the taps, the source channel wavelength λ is kept on the edge of the reflective bandwidth and RZ pulses are shaped. When the Bragg grating is stabilized, the feedback system maintains λ at a value linked to the grating reflective edge, and converts the light source modulated by overlapping at least one part of the optical spectrum of the source, into RZ pulses with high extinction ratio.

公开(公告)号：JP2000227523A

公开(公告)日：2000-08-15

申请号：JP2000024572

申请日：2000-02-02

Applicant: LUCENT TECHNOLOGIES INC

Inventor： AMUNDSON KARL R ,  EGGLETON BENJAMIN JOHN ,  JACKMAN REBECCA JANE ,  ROGERS JOHN A ,  STRASSER THOMAS ANDREW

IPC: G02B5/18 ,  G02B6/00 ,  G02B6/02 ,  G02B6/24 ,  G02B6/34 ,  G02B26/00 ,  G02F1/01 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H04B10/17 ,  H04B10/29 ,  G02B6/10

Abstract: PROBLEM TO BE SOLVED: To improve the performance of a thermally controllable grating by housing the thermally controllable fiber grating in a heat insulating tube. SOLUTION: A fiber equipped with a thermally controllable grating 11 is housed in a tube 12 such as a cylinder so that heat is insulated. The diameter of the tube 12 is controlled to be large enough to produce a proper space between the tube 12 and the fiber 10 and to avoid the contact of the grating 11 with the tube 12 but to be small enough to avoid generation of large air flow near the grating 11. The inner diameter of the tube 12 is preferably 1 cm or less. The tube 12 is sealed on both ends with elastic (rubber) stoppers 13, 14. A heat reflective coating may be applied on the tube 12 to obtain a better result. By inserting capillary tubes 15, 16 through the stoppers 13, 14, respectively, openings to pass the fiber 10 through the tube 12 are obtd.

公开(公告)号：JP2000137197A

公开(公告)日：2000-05-16

申请号：JP30793299

申请日：1999-10-29

Applicant: LUCENT TECHNOLOGIES INC

Inventor： EGGLETON BENJAMIN JOHN ,  ROGERS JOHN A ,  STRASSER THOMAS ANDREW

IPC: H01S3/06 ,  G02B5/18 ,  G02B6/00 ,  G02B6/02 ,  G02B6/24 ,  G02B6/34 ,  G02F1/01 ,  H01S3/067 ,  H01S3/10 ,  H04B10/17 ,  H04B10/29 ,  G02B6/10

Abstract: PROBLEM TO BE SOLVED: To obtain an optical diffraction grating device having an adjustable chirp. SOLUTION: The optical waveguide diffraction grating having an adjustable chirp includes a waveguide diffraction grating thermally brought into contact with an electrically controllable heat converting substrate whose temperature is changed along the length of the diffraction grating (A). The heat converting substrate can generate heat on a fiber, or remove heat from the fiber, and temperature slope can be generated along the diffraction grating. In an execution example, the heat converting substrate is constituted as a resistance film whose local resistance is changed along the length of the diffraction grating (B). Currents running through the thin film can generate the temperature slope along the diffraction grating almost proportional to the local resistance of the thin film, and the size of the chirp can be adjusted by the currents. Thus, this obtained device can be made simple, compact, and efficiently power.

公开(公告)号：JP2002220248A

公开(公告)日：2002-08-09

申请号：JP2001349251

申请日：2001-11-14

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BURDGE GEOFFREY L ,  DIGIOVANNI DAVID JOHN ,  EGGLETON BENJAMIN JOHN ,  FLEMING JAMES WILLIAM JR ,  KRANZ KAREN S ,  WINDELER ROBERT SCOTT ,  ZYDZIK GEORGE JOHN

IPC: G02B6/00 ,  C03B37/012 ,  C03B37/026 ,  G02B6/02 ,  G02B6/10 ,  G02F1/01

Abstract: PROBLEM TO BE SOLVED: To provide an improved method which produces an optical fiber device having a longitudinal conductor. SOLUTION: The optical fiber device which can electrically be controlled is produced through a step wherein a fiber preform 10 including a core area 11, a clad area 12, and holes 13A, 13B filled with one or more conductors 14A, 14B is provided, and a step wherein an optical fiber having a longitudinal buried conductor integral therewith is stretched from this preform.

公开(公告)号：JP2001077756A

公开(公告)日：2001-03-23

申请号：JP2000228339

申请日：2000-07-28

Applicant: LUCENT TECHNOLOGIES INC

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

IPC: H04B10/02 ,  G02B6/00 ,  G02B6/02 ,  H04B10/18 ,  H04L1/00

Abstract: PROBLEM TO BE SOLVED: To obtain a system incorporating an automatic dispersion compensating module for compensating the variation of dispersion caused by temperature by including a feedback circuit for adjusting a dispersion compensating element so as to assure the integrity of data through the system. SOLUTION: This system consists of a high-speed light transmitter 10, a transmission fiber path 11 and a light receiver 12. Further, the system is provided with one or plural dispersion compensating modules 20. Each module 20 is provided with an adjustable dispersion compensator 30, a data integrity monitor 31 and a feedback network 32. The monitor 31 adjusts the compensator 30 so as to optimize system performance through the network 32. In this module, e.g. the compensator 30 is provided with an optical circulator 32 connected to a transmission fiber and an adjustable dispersion compensating grating(DCG) 33.

公开(公告)号：JP2000298296A

公开(公告)日：2000-10-24

申请号：JP2000071393

申请日：2000-03-15

Applicant: LUCENT TECHNOLOGIES INC

Inventor： EGGLETON BENJAMIN JOHN ,  LENZ GADI ,  SLUSHER RICHARD ELLIOTT ,  SPALTER STEFAN HEINZ

IPC: G02B6/02 ,  G02F1/365 ,  H04B10/02 ,  H04B10/18 ,  G02B6/10 ,  G02B6/16

Abstract: PROBLEM TO BE SOLVED: To provide an all-optical means applicable to re-shaping of pulse by selecting an optically nonlinear material and periodic variations, so that a re-shaped optical output pulse becomes an optical output pulse substantially limited in conversion. SOLUTION: A WDM (a system having one or more operating wavelengths) signal from a transmitter 11 is propagated downstream to an amplifier 15, and demultiplexed by a conventional demultiplexer 17. Next, the demultiplexed channels are supplied to each BSPR(Bragg soliton pulse re-shapers) 161-169. Each BSPR is adjusted to a proper wavelength. Next, the reshaped pulses are multiplexed by a conventional multiplexer 18 and propagated downstream to a using means. The BSPR to be used consists of a Bragg diffraction grating formed in a waveguide showing nonlinearity with respect to the electric field of the pulse propagated via the BSPR. Furthermore, the BSPR is selected so that the nonlinearity of the waveguide substantially averages the dispersion, a fixed distorted pulse is substantially limited in conversion.

公开(公告)号：JP2002277650A

公开(公告)日：2002-09-25

申请号：JP2001081811

申请日：2001-03-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： AHUJA ASHISH ,  EGGLETON BENJAMIN JOHN ,  NIELSON TORBEN N ,  ROGERS JOHN A

IPC: G02B6/02 ,  G02B5/18 ,  G02B6/00 ,  G02B6/24 ,  G02B6/34 ,  G02F1/01 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H04B10/17 ,  H04B10/29 ,  G02B6/10

Abstract: PROBLEM TO BE SOLVED: To provide an optical waveguide grating device having an adjustable optical spacing profile. SOLUTION: The optical waveguide grating having the adjustable optical spacing profile is provided with a waveguide grating coming into thermal contact with one or more resistive film coatings. The coating is extended along the length direction of the grating and its local resistance is changed in accordance with the length of the grating. Since a plurality of overlapping coatings are chosen in a certain example, the variation values of respective resistance values are made different and various heat generation profiles are influenced by the control of each individual coating. Different heat generating profiles successively and proportionally change the geometric spacing and local refractive index of the grating along the length direction of the grating, so that a required adjustable optical spacing profile can be provided. In another example, a resistance film is used on the basis of heating variation to be suddenly or periodically changed.

公开(公告)号：JP2000221342A

公开(公告)日：2000-08-11

申请号：JP2000016484

申请日：2000-01-26

Applicant: LUCENT TECHNOLOGIES INC

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

IPC: G02B5/18 ,  G02B1/10 ,  G02B6/02 ,  G02B6/34 ,  G02B26/00 ,  G02F1/01 ,  H04B10/02 ,  H04B10/18 ,  H04B10/43 ,  G02B6/10 ,  H04B10/28

Abstract: PROBLEM TO BE SOLVED: To make it possible to use an optical grating device as a device for regulatable dispersion correction and to selectively change the characteristics and performance thereof by constituting the device in such a manner that the spacings between grating elements can be changed by a variable coating when strain in an axial direction is impressed to a waveguide. SOLUTION: A movable magnet 15a is directly added to the fiber coating 14 adjacently to a grating region in order to induce the strain in the fiber. A magnet 15b which does not move is added to a fixed base material 16 or a guide rail in a bond region 13b. At this time, the magnet 15a induces the shift in a wavelength distribution having a possibility useful to some of applications of dispersion correction. When the strain in the axial direction is impressed to the waveguide by the magnet moment induced in the magnets 15a and 15b, the spacings between the grating elements may be changed by the variable coating.

公开(公告)号：JP2000216463A

公开(公告)日：2000-08-04

申请号：JP2000009589

申请日：2000-01-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： COLLINGS BRANDON CHRISTOPHER ,  EGGLETON BENJAMIN JOHN ,  GREENBERG KOSONSKI SANDRA ,  LENZ GADI ,  SPALTER STEFAN HEINZ

IPC: H01S3/10 ,  H01S3/06 ,  H01S3/067 ,  H01S3/098 ,  H01S3/108

Abstract: PROBLEM TO BE SOLVED: To provide a laser incorporating a tunable diffraction grating for group speed dispersion compensation. SOLUTION: A laser contains a diffraction grating 11 which is incorporated in a cavity and can be tuned. The diffraction grating 11 generates GVD(group velocity dispersion) with a wavelength detached from an optical forbidden band and GVD compensation and control of dispersion in the hollow are executed. The diffraction grating 11 operates at a transmission mode and reflection in the optical forbidden band is constituted so that it does not affect a laser condition. The diffraction grating 11 can be synchronized and GVD in the hollow can be adjusted. The diffraction grating 11 is an apodized fiber Bragg diffraction grating in the hollow of a mode lock fiber laser in a preferable example. GVD of the fiber diffraction grating can be tuned with a distortion in an axial direction.