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公开(公告)号：DE60031587T2
公开(公告)日：2007-06-21
申请号：DE60031587
申请日：2000-01-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DOERR CHRISTOPHER RICHARD
Abstract: An optical device having an array of substantially equal-length optical waveguides. Each one of the optical waveguides includes one or more straight segments, one or more curved segments, and optionally, one or more transition segments. According to my invention, the sum of the lengths of the straight segments in each of the waveguides is substantially equal. Similarly, the sum of the lengths of the curved segments in each of the waveguides may be substantially equal as well. Finally, the sum of the lengths of optional transition segments in each of the waveguides may also be substantially equal. Advantageously, my device exhibits relative lengths that are robust to fabrication errors and have low polarization sensitivity.
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公开(公告)号：DE602004000348T2
公开(公告)日：2006-08-24
申请号：DE602004000348
申请日：2004-02-24
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHANDRASEKHAR SETHUMADHAVAN , CHRAPLYVY ANDREW ROMAN , DOERR CHRISTOPHER RICHARD , WINZER PETER J
Abstract: An improved multi-channel optical equalizer method and apparatus for intersymbol interference mitigation compensates for single- or multi- wavelength channels simultaneously and requires few adjustable parameters. The optical equalizer can also compensate for overshoots and signal transition degradations of a semiconductor optical amplifier. The equalizer unit has only two control signals, one to control signal magnitude and one to control signal phase, yet it can still compensate many wavelength channels simultaneously. The equalizer includes a coupler with a controllable coupling ratio for splitting the light into two portions and a controllable interferometer means having two arms, one arm having an additional delay which is equal to an integer multiple of 1/ DELTA f, where DELTA f is the channel spacing between adjacent wavelengths utilized in the optical system. The controllable interferometer unit also has a controllable delay in a first or second arm for adjusting the relative phase of the light passing therethrough. A coupler combines the two signal portions from the first and second arms to form the equalized output signal. In a second embodiment, the equalizer includes two equalizer units connected in series to compensate for both leading and lagging intersymbol interference.
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公开(公告)号：ATE316722T1
公开(公告)日：2006-02-15
申请号：AT04250980
申请日：2004-02-24
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHANDRASEKHAR SETHUMADHAVAN , CHRAPLYVY ANDREW ROMAN , DOERR CHRISTOPHER RICHARD , WINZER PETER J
Abstract: An improved multi-channel optical equalizer method and apparatus for intersymbol interference mitigation compensates for single- or multi- wavelength channels simultaneously and requires few adjustable parameters. The optical equalizer can also compensate for overshoots and signal transition degradations of a semiconductor optical amplifier. The equalizer unit has only two control signals, one to control signal magnitude and one to control signal phase, yet it can still compensate many wavelength channels simultaneously. The equalizer includes a coupler with a controllable coupling ratio for splitting the light into two portions and a controllable interferometer means having two arms, one arm having an additional delay which is equal to an integer multiple of 1/ DELTA f, where DELTA f is the channel spacing between adjacent wavelengths utilized in the optical system. The controllable interferometer unit also has a controllable delay in a first or second arm for adjusting the relative phase of the light passing therethrough. A coupler combines the two signal portions from the first and second arms to form the equalized output signal. In a second embodiment, the equalizer includes two equalizer units connected in series to compensate for both leading and lagging intersymbol interference.
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公开(公告)号：CA2372536C
公开(公告)日：2005-08-16
申请号：CA2372536
申请日：2002-02-18
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DOERR CHRISTOPHER RICHARD
Abstract: A method and apparatus are disclosed for selectively passing or blocking an optical signal using an opaque or reflective shutter that is selectively positioned in or out of the light path. The disclosed wavelength blocker can be employed to filter input wavelength-division multiplexed (WDM) signal comprised of N wavelength channels, where a mechanical shutter array selectively passes each of the N wavelength channels. Each mechanical shutter may be controlled, for example, by a micromachine control element that physically lifts the shutter into or out of the lightpath. The disclosed wavelength blockers may be utilized in wavelength-selective cross connects, as well as other optical devices. In an exemplary wavelength-selective cross connect, a n array of mirrors are employed in a planar waveguide having two sets of waveguide gratings intersecting at an angle. The mirrors and waveguide gratings are positioned such that if the mirror for a given channel is up (removed from the light path), then tha t channel passes across the device and exits the corresponding output port (bar state) , otherwise the light is reflected by the mirror and exits the opposite output port (bar state).
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Patent Agency Ranking
公开(公告)号：AU2003225775A8
公开(公告)日：2003-09-29
申请号：AU2003225775
申请日：2003-03-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DOERR CHRISTOPHER RICHARD
Abstract: A thermo-optic lens of the present invention includes a plurality of parallel heating elements having substantially constant center-to-center spacing and respective dimensions varying from the outermost heating elements to the innermost heating elements, and at least two conductive elements for providing a potential across the heating elements. The dimensions of the heating elements are varied such that a parabolic temperature distribution is generated within the thermo-optic lens.
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公开(公告)号：CA2370910A1
公开(公告)日：2002-09-02
申请号：CA2370910
申请日：2002-02-07
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DOERR CHRISTOPHER RICHARD
IPC: G02B6/12 , G02B5/18 , G02B6/122 , G02B6/293 , G02B6/34 , H04B10/27 , H04B10/29 , H04B10/291 , H04J14/02 , G02B5/20
Abstract: A wavelength filter, for filtering a WDM signal, comprises a demultiplexer, a multiplexer, and a control array connecting the demultiplexer and the multiplexer, where the demultiplexer and the multiplexer have a free spectral range (FSR) smaller than their wavelength channel span.
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公开(公告)号：WO2009038662A3
公开(公告)日：2009-05-22
申请号：PCT/US2008010620
申请日：2008-09-11
Applicant: LUCENT TECHNOLOGIES INC , DOERR CHRISTOPHER RICHARD
Inventor： DOERR CHRISTOPHER RICHARD
IPC: G02F1/313 , H04B10/158 , H04B10/18 , H04L27/22
CPC classification number: G02F1/3136 , G02F2203/06 , H04B10/677 , H04L27/2331
Abstract: A monolithic, Indium Phosphide (InP) differential phase-shift keying (DPSK) or differential quadrature phase shift keying (DQPSK) receiver that exhibits low polarization sensitivity comprises a delay interferometer including a first coupler (120), two unequal-length arms (130, 140), a second coupler (125), photodetectors (160, 165) and polarisation-dependent phase shifters (135, 145) operable to suppress a polarisation-dependent wavelenght (PDW) shift of the delay interferometer.
Abstract translation: 显示低偏振灵敏度的单片磷化铟（InP）差分相移键控（DPSK）或差分正交相移键控（DQPSK）接收机包括延迟干涉仪，包括第一耦合器（120），两个不等长臂 ，140），第二耦合器（125），光电检测器（160,165）和偏振相关移相器（135,145），其可操作以抑制所述延迟干涉仪的偏振相关波长（PDW）移位。
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公开(公告)号：WO2007127341A2
公开(公告)日：2007-11-08
申请号：PCT/US2007010187
申请日：2007-04-26
Applicant: LUCENT TECHNOLOGIES INC , CHOWDHURY AREF , DOERR CHRISTOPHER RICHARD , RAYBON GREGORY
Inventor： CHOWDHURY AREF , DOERR CHRISTOPHER RICHARD , RAYBON GREGORY
CPC classification number: H01S5/5009 , H01S3/06712 , H01S3/10007 , H01S3/10023 , H01S3/1301 , H01S3/2308
Abstract: A polarization-diverse optical amplifier includes a polarization-sensitive optically active medium and a polarization splitter. The polarization splitter is configured to receive input light, to direct a first polarization component of the received input light to a first optical path segment, and to direct a second polarization component of the received input light to a separate second optical path segment. The active medium has first and second optical ports. The first optical port is at an end of the first optical path segment. The second port is at an end of the second optical path segment. The active medium outputs amplified light from one of the ports in response to receiving the input light at the other of the ports. In a preferred embodiment, the active medium has an internal optical axis, and the polarizations of the first and second components are oriented relative to that axis so that amplification is enhanced. The two optical path segments may include polarization-maintaining optical waveguides.
Abstract translation: 偏振分集光放大器包括偏振光敏光学介质和偏振分光器。 偏振分离器被配置为接收输入光，以将接收的输入光的第一偏振分量引导到第一光路段，并将接收的输入光的第二偏振分量引导到单独的第二光路段。 活动介质具有第一和第二光学端口。 第一光口位于第一光路段的一端。 第二端口处于第二光路段的一端。 响应于在另一个端口处接收输入光，有源介质从一个端口输出放大的光。 在优选实施例中，活性介质具有内部光轴，并且第一和第二组分的极化相对于该轴取向，从而增强了放大。 两个光路段可以包括偏振保持光波导。
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39.发明公开
公开(公告)号：EP1485750A4
公开(公告)日：2010-02-17
申请号：EP03744663
申请日：2003-03-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DOERR CHRISTOPHER RICHARD
CPC classification number: G02F1/29 , G02F1/0147 , G02F2001/294 , G02F2203/05
Abstract: A thermo-optic lens of the present invention includes a plurality of parallel heating elements having substantially constant center-to-center spacing and respective dimensions varying from the outermost heating elements to the innermost heating elements, and at least two conductive elements for providing a potential across the heating elements. The dimensions of the heating elements are varied such that a parabolic temperature distribution is generated within the thermo-optic lens.
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