公开(公告)号：DE602005000276T2

公开(公告)日：2007-05-31

申请号：DE602005000276

申请日：2005-06-21

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GILL DOUGLAS M ,  LIU XIANG

IPC: H04B10/155 ,  G02F1/225

Abstract: An optical modulator is overdriven to increase its nonlinearity and therefore improve its response as it pertains to differential phase shift keyed (DPSK) transmission and a method of operating the same. In one embodiment, the MZM includes an MZM drive circuit coupled to the electrodes and configured to deliver to the electrode a DPSK drive signal bearing digital data and having a voltage that exceeds a normal drive voltage of the MZM by at least about 20%.

公开(公告)号：CA2377321C

公开(公告)日：2006-10-03

申请号：CA2377321

申请日：2002-03-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SMITH ROBERT W ,  GILL DOUGLAS M ,  GATES JOHN VANATTA II

IPC: G02F1/035 ,  G02F1/225 ,  G02B6/12 ,  G02F1/03

Abstract: A Mach-Zehnder electro-optic modulator is formed that exhibits significant ly reduced chirp by utilizing an RF electrode that covers a first waveguide arm in a first region of the modulator and covers the second, remaining waveguide arm in a third region of the modulator (with a second, intermediate region used as a transition area for the electrode). Moving the electrode from one waveguide to the other allows for the chirp created in the third region to essentially "null out" the chirp that accumulated along the first region. Modulation of the optical signal is maintained in th e presence of the "electrode switching" by inverting the domain of the optical substrate material in the third region of the modulator.

公开(公告)号：DE602005016941D1

公开(公告)日：2009-11-12

申请号：DE602005016941

申请日：2005-08-16

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GILL DOUGLAS M ,  MADSEN CHRISTI K ,  RAFFERTY CONOR S

IPC: G02F1/025

Abstract: A semiconductor waveguide includes a section containing free charge, either electrons or holes, which can be steered into or removed from the path of the beam under the control of electrical signals. The mobile charges come from a potential well which may be either filled or depleted under electrical control. When the well is filled, the charges speed the beam propagation, introducing a phase change. When the well is emptied the beam propagates with extra delay. The phase shifter allows very high speed modulation of the beam using low voltage and low power electronics. The device can be created using standard silicon processing techniques, and integrated with other optical components such as splitters and combiners to create amplitude modulators, attenuators and other optical devices.

公开(公告)号：DE602005000276D1

公开(公告)日：2007-01-04

申请号：DE602005000276

申请日：2005-06-21

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GILL DOUGLAS M ,  LIU XIANG

IPC: H04B10/155 ,  G02F1/225

Abstract: An optical modulator is overdriven to increase its nonlinearity and therefore improve its response as it pertains to differential phase shift keyed (DPSK) transmission and a method of operating the same. In one embodiment, the MZM includes an MZM drive circuit coupled to the electrodes and configured to deliver to the electrode a DPSK drive signal bearing digital data and having a voltage that exceeds a normal drive voltage of the MZM by at least about 20%.

公开(公告)号：DE602005000188D1

公开(公告)日：2006-11-30

申请号：DE602005000188

申请日：2005-06-21

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GILL DOUGLAS M ,  LIU XIANG

IPC: H04B10/155 ,  H04B10/18 ,  H04B10/43

公开(公告)号：CA2377321A1

公开(公告)日：2002-10-17

申请号：CA2377321

申请日：2002-03-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GATES JOHN VANATTA II ,  GILL DOUGLAS M ,  SMITH ROBERT W

IPC: G02F1/035 ,  G02F1/03 ,  G02F1/225 ,  G02B6/12

Abstract: A Mach-Zehnder electro-optic modulator is formed that exhibits significant ly reduced chirp by utilizing an RF electrode that covers a first waveguide arm in a first region of the modulator and covers the second, remaining waveguide arm in a third region of the modulator (with a second, intermediate region used as a transition area for the electrode). Moving the electrode from one waveguide to the other allows for the chirp created in the third region to essentially "null out" the chirp that accumulated along the first region. Modulation of the optical signal is maintained in th e presence of the "electrode switching" by inverting the domain of the optical substrate material in the third region of the modulator.

公开(公告)号：WO2008045103A3

公开(公告)日：2008-06-05

申请号：PCT/US2006043782

申请日：2006-11-09

Applicant: LUCENT TECHNOLOGIES INC ,  GILL DOUGLAS M ,  RASRAS MAHMOUD ,  TU KUN-YII

Inventor： GILL DOUGLAS M ,  RASRAS MAHMOUD ,  TU KUN-YII

IPC: H04B10/155 ,  H04B10/158 ,  H04B10/18

CPC classification number: G02B6/2746 ,  G02B6/2935 ,  G02B6/29395 ,  G02B6/4206 ,  G02B6/4246 ,  H04B10/2507 ,  H04B10/50 ,  H04B10/675

Abstract: There is provided a method and apparatus for optically filtering a communication signal. More specifically, in one embodiment, there is provided an apparatus comprising an optical filter having first and second input ports and first and second output ports, the optical filter being configured to transmit light in a target frequency range to the first output port in response to receiving light at the first input port and being configured to transmit light in the target frequency range to the second input port in response to receiving light at the second output port, and first and second photodiodes, the first diode being located to be illuminated by light from the first output port and the second photodiode being located to be illuminated by light from the second input port.

Abstract translation: 提供了一种用于对通信信号进行光学滤波的方法和装置。 更具体地，在一个实施例中，提供了一种包括具有第一和第二输入端口以及第一和第二输出端口的滤光器的设备，所述滤光器被配置为响应于第一输出端口将目标频率范围的光透射到第一输出端口 在第一输入端口处接收光并响应于在第二输出端口接收光而将目标频率范围内的光传输到第二输入端口，以及第一和第二光电二极管，第一二极管被定位成被光照射 从第一输出端口和第二光电二极管位于被来自第二输入端口的光照射。