公开(公告)号：JPH11331079A

公开(公告)日：1999-11-30

申请号：JP6106599

申请日：1999-03-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SPECTOR MAGALY

IPC: H01S3/10 ,  G02F1/01 ,  H01S3/06 ,  H04B10/02 ,  H04B10/18 ,  H04J14/02

Abstract: PROBLEM TO BE SOLVED: To provide an optical amplifier that suppresses power dispersion. SOLUTION: A level of crosstalk of each channel is reduced considerably by inserting a loss element 60 to each path of a channel receiving the effect of power dispersion being a result of amplification. Furthermore, all separated channels receiving the effect of large amplification pass a loss device thereby similarly reducing a level of crosstalk of each channel receiving the effect of high amplification.

公开(公告)号：JP2001345784A

公开(公告)日：2001-12-14

申请号：JP2001097917

申请日：2001-03-30

Applicant: LUCENT TECHNOLOGIES INC

Inventor： LIN WENHUA ,  LIOU KANG-YIH ,  MCKAY BRADLEY A ,  SPECTOR MAGALY

IPC: H04J14/00 ,  H04B10/02 ,  H04J3/00 ,  H04J3/08 ,  H04J14/02 ,  H04Q3/52

Abstract: PROBLEM TO BE SOLVED: To provide a facility for enhancing simultaneous transmissions of optical signals of different data rates such as, for example, OC48 and OC192 signals. SOLUTION: A stream of a first channel λi for carrying signals of different data rates and a stream of a second channel λy for carrying a signal having the same data rate are respectively supplied to inputs 31 and 32 of an asymmetrical wavelength synthesizer 130, interleaved at an output 33, and transmitted via an optical path 145. The synthesizer 130 reconfigures the signal to be processed, thereby making it ideally suited to offset problems of cladding mode when demultiplexing and multiplexing the signal streams as its advantage.

公开(公告)号：JP2001217777A

公开(公告)日：2001-08-10

申请号：JP2000383710

申请日：2000-12-18

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SPECTOR MAGALY ,  NIELSEN TORBEN N ,  THOMPSON WILLIAM A

IPC: G02B5/18 ,  G02B6/293 ,  H04B10/02 ,  H04J14/02

Abstract: PROBLEM TO BE SOLVED: To improve flexibility in the channel selection for an applied optical wavelength-division add/drop multiplexer(WADM) signal at low cost. SOLUTION: A WADM is formed to branch/insert at least two signals each associated with one of a plurality of channels among wavelength division multiplexed(WDM) signals. A WADM 100 comprises an optical circulator 130 and that optical circulator is optically coupled to at least two of fiber Bragg gratings(FBG) 132, 134, 136 and 138 which are interconnected in series at one port and optically coupled to a thin film filter 120 having at least two thin film filter elements 122, 124, 126 and 128 which are interconnected in series at the other port.

公开(公告)号：JP2000068933A

公开(公告)日：2000-03-03

申请号：JP21939699

申请日：1999-08-03

Applicant: LUCENT TECHNOLOGIES INC

Inventor： LUMISH STANANK ,  SPECTOR MAGALY

IPC: H04B10/02 ,  G02B6/34 ,  H04J14/00 ,  H04J14/02 ,  H04Q11/00

Abstract: PROBLEM TO BE SOLVED: To reduce optical switches, to delete signal processing of a bypass channel, to reduce the cost and to suppress deterioration of a characteristic by making a composite signal pass through a prescribed filter and bypassing signals except for the signal only when the channel is branched or substituted. SOLUTION: When an optical multiplex signal λ is received by a switch input 107, the optical multiplex signal λ is switched and is outputted to output 109 in response to a control signal 106 by local, remote, automatic and manual operations in a wavelength division/multiplex WDM filter/bypass device 100. It is inputted to a filter 104 through an optical link 111. The filter 104 branches a prescribed channel λ3, outputs the multiplex signal obtained by merging an input frequency channel λ3', inputs it to a switch 102 through an optical link 113, is switched and is outputted to 108. At the time of bypassing the filter, the control signal 106 outputs the received multiplex signal λ to 108 as it is with the switch 102 in a bypass state and an unnecessary processing is omitted.

公开(公告)号：DE602004000164T2

公开(公告)日：2006-07-27

申请号：DE602004000164

申请日：2004-04-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DUTTA RANJAN ,  GROSZ DIEGO FERNANDO ,  GUREVICH ALEJANDRA B ,  KUNG ALAIN P ,  SPECTOR MAGALY

IPC: H04B10/02 ,  H04B10/18 ,  G02B6/34 ,  H04J14/00 ,  H04J14/02

公开(公告)号：CA2327050A1

公开(公告)日：2001-06-16

申请号：CA2327050

申请日：2000-11-29

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SPECTOR MAGALY ,  NIELSEN TORBEN N ,  THOMPSON WILLIAM A

IPC: G02B5/18 ,  G02B6/293 ,  H04B10/02 ,  H04J14/02

Abstract: An optical wavelength add/drop multiplexer (WADM) is configured to aced or drop two or more signals each associated with one of a plurality of channels in a wavelength division multiplexed (WDM) signal. The WADM comprises an optical circulator that is optically coupled at one port to two or more serially interconnected fiber Bragg gratings (FBGs), and is optically coupled at another port to a thin film filter including two or more serially interconnected thi n film filter elements. Each of the two or more FBGs is matched with a thin film filter element, both arranged to be responsive to signals associated with one of th e plurality of channels. Bandwidth and dispersion properties for the FBGs are selected to permit operation of the WADM at two distinct signal data rates. To equalize associated insertion losses in embodiments of the invention arrange d to add or drop two or more signals, the FBGs are matched to the thin film fitter elements in inverse order with respect to their optical distance from the optical circulator.

公开(公告)号：DE602004000164D1

公开(公告)日：2005-12-08

申请号：DE602004000164

申请日：2004-04-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DUTTA RANJAN ,  GROSZ DIEGO FERNANDO ,  GUREVICH ALEJANDRA B ,  KUNG ALAIN P ,  SPECTOR MAGALY

IPC: H04B10/02 ,  G02B6/34 ,  H04B10/18 ,  H04J14/00 ,  H04J14/02

公开(公告)号：CA2337598A1

公开(公告)日：2001-09-30

申请号：CA2337598

申请日：2001-02-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SPECTOR MAGALY ,  LIOU KANG-YIH ,  LIN WENHUA ,  MCKAY BRADLEY A

IPC: H04J14/00 ,  H04B10/255 ,  H04B10/2557 ,  H04B10/27 ,  H04B10/29 ,  H04B10/291 ,  H04J3/00 ,  H04J3/08 ,  H04J14/02 ,  H04Q3/52 ,  H04B10/12

Abstract: A facility is provided to enhance the simultaneous transmission of optical signals of different data rates, for example, OC48 and OC192 signals. Specifically, a first stream of channels carrying signals of different data rates and a second stream of channels carrying signals each having the same data rate are supplied to respective inputs of an asymmetric wavelength combiner, which interleaves th e streams at an output for transmission over an optical path. Advantageously the combiner inherently reshapes the signals that it processes, which makes it ideally suited to offset cladding mode problems encountered when demultiplexing and multiplexing the signal streams .

公开(公告)号：AU2984301A

公开(公告)日：2001-10-04

申请号：AU2984301

申请日：2001-03-23

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SPECTOR MAGALY ,  MCKAY BRADLEY A ,  LIN WENHUA ,  LIOU KANG-YIH

IPC: H04J14/00 ,  H04B10/255 ,  H04B10/2557 ,  H04B10/27 ,  H04B10/29 ,  H04B10/291 ,  H04J3/00 ,  H04J3/08 ,  H04J14/02 ,  H04Q3/52 ,  H04B10/12

Abstract: A facility is provided to enhance the simultaneous transmission of optical signals of different data rates, for example, OC48 and OC192 signals. Specifically, a first stream of channels carrying signals of different data rates and a second stream of channels carrying signals each having the same data rate are supplied to respective inputs of an asymmetric wavelength combiner, which interleaves the streams at an output for transmission over an optical path. Advantageously the combiner inherently reshapes the signals that it processes, which makes it ideally suited to offset cladding mode problems encountered when demultiplexing and multiplexing the signal streams.

公开(公告)号：AU7220500A

公开(公告)日：2001-06-21

申请号：AU7220500

申请日：2000-12-13

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SPECTOR MAGALY ,  THOMPSON WILLIAM A ,  NIELSEN TORBEN N

IPC: G02B5/18 ,  G02B6/293 ,  H04B10/02 ,  H04J14/02 ,  H04B10/12

Abstract: An optical wavelength add/drop multiplexer (WADM) is configured to add or drop two or more signals each associated with one of a plurality of channels in a wavelength division multiplexed (WDM) signal. The WADM comprises an optical circulator that is optically coupled at one port to two or more serially interconnected fiber Bragg gratings (FBGs), and is optically coupled at another port to a thin film filter including two or more serially interconnected thin film filter elements. Each of the two or more FBGs is matched with a thin film filter element, both arranged to be responsive to signals associated with one of the plurality of channels. Bandwidth and dispersion properties for the FBGs are selected to permit operation of the WADM at two distinct signal data rates. To equalize associated insertion losses in embodiments of the invention arranged to add or drop two or more signals, the FBGs are matched to the thin film filter elements in inverse order with respect to their optical distance from the optical circulator.