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公开(公告)号：AU2003225775A1
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：CA2479178A1
公开(公告)日：2003-09-25
申请号：CA2479178
申请日：2003-03-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DOERR CHRISTOPHER RICHARD
Abstract: A thenno-optic lens (150) of the present invention includes a plurality of parallel heating elements (2101-210n) having substantially constant center-t o- center spacing and respective dimensions varying from the outermost heating elements to the innermost heating elements, and at least two conductive elements (2201, 2202) 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. A dispersion compensator (100) of the present invention includes a first and a second waveguide grating (1101, 1102), each of the waveguide gratings having a first star coupler (1301, 1322), an array of waveguides (1201-120n, 1221-122 n) of increasing path lengths, a first end of each of the waveguides of the arr ay of waveguides optically coupled to the first star coupler, and a second star coupler (1302, 1322), a second end of each of the waveguides of the array of waveguides optically coupled to the second star coupler. The dispersion compensator further includes a lens (150) having a parabolic refractive inde x distribution, the lens optically coupling the second star coupler of the fir st waveguide grating and the second star coupler of the second waveguide gratin g.
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公开(公告)号：DE602005001370D1
公开(公告)日：2007-07-26
申请号：DE602005001370
申请日：2005-08-11
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DOERR CHRISTOPHER RICHARD
Abstract: A method of and apparatus for implementing a wavelength-tracking dispersion compensator (WT-DC) that tracks the wavelength of a
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公开(公告)号：DE60031587D1
公开(公告)日：2006-12-14
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：AT316722T
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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Patent Agency Ranking
公开(公告)号：DE60115525D1
公开(公告)日：2006-01-12
申请号：DE60115525
申请日：2001-03-12
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DAMASK JAY N , DOERR CHRISTOPHER RICHARD
Abstract: A double-pass birefringent filter apparatus comprises an external-interface apparatus (illustratively including of a beam-displacer element and a waveplate element); a birefringent filter comprised of a series of several birefringent waveplates; and a wrap-around unit (illustratively comprised of a beam-displacer element and a retro-reflector). In response to an input beam received at the external-interface apparatus, the double-pass birefringent filter forms two output beams having complimentary intensities which vary periodically with frequency.
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公开(公告)号：CA2634293A1
公开(公告)日：2003-09-25
申请号：CA2634293
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：CA2384236A1
公开(公告)日：2002-12-29
申请号：CA2384236
申请日：2002-04-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DOERR CHRISTOPHER RICHARD , CAROLI CARL A , FELDMAN ROBERT D
IPC: H04B10/27 , H04B10/278 , H04B10/29 , H04B10/291 , H04J14/00 , H04J14/02 , H04B10/20
Abstract: A WDM input signal received at an add/drop node is coupled onto both a "drop" transmission path and a "through" transmission path within the node. Optical channels to be dropped are then processed within the "drop" path, such as by optical demultiplexing. Because a copy of the same WBM input signal is routed on the "through" path, a dynamically configurable and programmable wavelength block er selectively blocks the optical channels that are being dropped from the WDM input signal and passes through those optical channels not being dropped onto the "through" path. In an "add" path within the node, optical channels are selectively added, such as by using optical multiplexing. Those optical channels from the multiplexed optical signal that are not designated for "add" (e.g., "unused" channels) are selectively blocked within the "add" transmission path. Optical channels from the "add" and "through" paths are then combined form a WDM output signal.
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公开(公告)号：CA2634293C
公开(公告)日：2011-05-17
申请号：CA2634293
申请日：2003-03-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DOERR CHRISTOPHER RICHARD
Abstract: The invention relates to tunable dispersion compensators employing a thermo-optic lens. A dispersion compensator in accordance with the present invention comprises a dispersion compensator, comprising: a first and a second waveguide grating, each of the waveguide gratings comprising a first star coupler, an array of waveguides of increasing path lengths, a first end of each of the waveguides of the array of waveguides optically coupled to the first star coupler, and a second star coupler, and a lens comprising a parabolic refractive index distribution, wherein a second end of each of the waveguides of the array of waveguides is optically coupled to the second star coupler, and wherein the lens optically couples the second star coupler of the first waveguide grating and the second star coupler of the second waveguide grating.
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公开(公告)号：DE602006007634D1
公开(公告)日：2009-08-20
申请号：DE602006007634
申请日：2006-02-28
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DOERR CHRISTOPHER RICHARD , MAROM DAN MARK
Abstract: Wavelength-selective switches (WSSs) having embedded multiplexer or demultiplexer functionality include a stack of planar waveguide circuits (PLCs) in which all but one of the PLCs have identical features consisting of a single waveguide connected to a free space region, further connected to a waveguide array that terminates at the PLC edge facet, which are placed at the front focal plane of a lens, generating a spectrally resolved optical signal at the back focal plane of the lens. Due to the use of a single lens, the spectrally resolved optical signal of all the PLCs are superimposed, differing only by propagation direction. A tilting micro-mirror array at the back focal plane reflects the spectral components, implementing a wavelength-selective switch. The reflected light can couple to any of the remaining PLCs, for multiplexing, or to the different PLC in the stack, which implements the multiplexer/demultiplexer.
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