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公开(公告)号：DE602006006838D1
公开(公告)日：2009-06-25
申请号：DE602006006838
申请日：2006-07-20
Applicant: IBM
Inventor： JACOBOWITZ LAWRENCE , DECUSATIS CASIMER
Abstract: Disclosed are a microlens array, and a method of positioning and aligning the microlens array on another device. Generally, the microlens array comprises an array of injection molded microlens elements, and a supporting flange. Each of the microlens elements has a generally spheroid or spherical shape, and the supporting flange connects together the array of microlens elements to facilitate positioning that array of lenses on a printed circuit board, semiconductor package or wafer. This array is well suited for use with vertical cavity surface emitting lasers (VCSELs); and, in particular, the preferred embodiment of the invention addresses the problem of VCSEL laser array alignment by using arrays of microlenses elements fabricated by injection molding.
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公开(公告)号：DE60303140D1
公开(公告)日：2006-03-30
申请号：DE60303140
申请日：2003-08-28
Applicant: IBM
Inventor： KNICKERBOCKER JOHN U , JACOBOWITZ LAWRENCE , LUIJTEN RONALD P , SHINDE SUBHASH L
Abstract: A set of interlocking modules supports and connects a die containing lasers, a set of precision molded lenses and a set of beam switching elements. Another embodiment of the invention is a structure for mounting a logic chip and an optical chip on a chip carrier, with the optical chip being mounted on the side of the carrier facing the system board on which the carrier is mounted, so that radiation travels in a straight path from optical sources on the optical chip into optical transmission guides on the board.
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公开(公告)号：AU2003268949A1
公开(公告)日：2004-04-19
申请号：AU2003268949
申请日：2003-08-28
Applicant: IBM
Inventor： LUIJTEN RONALD P , SHINDE SUBHASH L , KNICKERBOCKER JOHN U , JACOBOWITZ LAWRENCE
Abstract: A set of interlocking modules supports and connects a die containing lasers, a set of precision molded lenses and a set of beam switching elements. Another embodiment of the invention is a structure for mounting a logic chip and an optical chip on a chip carrier, with the optical chip being mounted on the side of the carrier facing the system board on which the carrier is mounted, so that radiation travels in a straight path from optical sources on the optical chip into optical transmission guides on the board.
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公开(公告)号：DE69215427T2
公开(公告)日：1997-05-28
申请号：DE69215427
申请日：1992-03-27
Applicant: IBM
Inventor： JACOBOWITZ LAWRENCE , ECKER MARIO ENRIQUE
Abstract: The present invention relates generally to a new interface and a method for making the same, and more particularly, to an electrical transmission-line interface and a method for making the same. On a substrate having semiconductors, a driver or receiver circuit is provided to interface with an electrical transmission-line. Integral means for the electrical transmission-line alignment, support and transit through a sealed environment is also provided. A fluid tight seal can also be provided for the various components that are in the interior of the housing. Variable time-delay means is provided for a computer clock system or other microwave applications.
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公开(公告)号：DE60222889D1
公开(公告)日：2007-11-22
申请号：DE60222889
申请日：2002-05-07
Applicant: IBM
Inventor： DECUSATIS CASIMER M , JACOBOWITZ LAWRENCE
Abstract: A wavelength-locked loop servo-control circuit and methodology that enables real time mutual alignment of an electromagnetic signal having a peaked spectrum function including a center wavelength and a wavelength selective device implementing a peaked passband function including a center wavelength, in a system employing electromagnetic waves. The circuit comprises a mechanism for applying a dither modulation signal at a dither modulation frequency to the electromagnetic signal, and inputting the dither modulated electromagnetic signal to the wavelength selective device; a mechanism for converting a portion of the dither modulated electromagnetic signal to an electric feedback signal; a mechanism for continuously comparing the feedback signal with said dither modulation signal and generating an error signal representing a difference between a frequency characteristic of the feedback signal and a dither modulation frequency; and a mechanism for adjusting the peaked spectrum function of the electromagnetic signal according to the error signal. The center wavelength of the electromagnetic signal and the wavelength selective device center wavelength become aligned when the frequency characteristic of the feedback signal is two times the dither modulation frequency.
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Patent Agency Ranking
公开(公告)号：CA2061299C
公开(公告)日：1998-09-22
申请号：CA2061299
申请日：1992-02-17
Applicant: IBM
Inventor： ECKER MARIO E , JACOBOWITZ LAWRENCE
IPC: G02B6/42 , H04B10/12 , H04B10/135 , H04B10/14 , H04B10/2581
Abstract: The present invention relates generally to a new interface and a method for making the same, and more particularly, to an optical fiber interface and a method for making the same. On a substrate having semiconductors, a receiver/transmitter connection is provided to interface with an optical fiber. Integral means for the fiber alignment, support and transit through a sealed environment is also provided. The substrate having the receiver/transmitter secured to it with the optical fiber end, is then enclosed in a housing.
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公开(公告)号：DE69215427D1
公开(公告)日：1997-01-09
申请号：DE69215427
申请日：1992-03-27
Applicant: IBM
Inventor： JACOBOWITZ LAWRENCE , ECKER MARIO ENRIQUE
Abstract: The present invention relates generally to a new interface and a method for making the same, and more particularly, to an electrical transmission-line interface and a method for making the same. On a substrate having semiconductors, a driver or receiver circuit is provided to interface with an electrical transmission-line. Integral means for the electrical transmission-line alignment, support and transit through a sealed environment is also provided. A fluid tight seal can also be provided for the various components that are in the interior of the housing. Variable time-delay means is provided for a computer clock system or other microwave applications.
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公开(公告)号：FR2364436A1
公开(公告)日：1978-04-07
申请号：FR7722462
申请日：1977-07-13
Applicant: IBM
Inventor： JACOBOWITZ LAWRENCE , MATHISEN EINAR S , THORP LAWRENCE D
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公开(公告)号：ES2290323T3
公开(公告)日：2008-02-16
申请号：ES02754641
申请日：2002-05-07
Applicant: IBM
Inventor： DECUSATIS CASIMER M , JACOBOWITZ LAWRENCE
Abstract: Un circuito (10) de servo control de bucle de longitud de onda bloqueada que permite la alineación mutua en tiempo real de una señal electromagnética que tiene una función de espectro máxima o de pico que incluye una longitud de onda central y un dispositivo (25) selector de longitud de onda que pone en práctica una función de banda de paso de pico que incluye una longitud de onda central, en un sistema que emplea ondas electromagnéticas, comprendiendo dicho circuito: un mecanismo (12, 14, 22) para aplicar una señal (27) de modulación de acción vibratoria a una frecuencia de modulación de acción vibratoria a dicha señal electromagnética (18), e introducir dicha señal (20) electromagnética modulada de acción vibratoria a dicho dispositivo selector de longitud de onda; un mecanismo (30) para convertir una parte (29) de dicha señal electromagnética modulada de acción vibratoria en una señal (32) de realimentación eléctrica; un mecanismo (35, 40, 45, 48) para comparar continuamente dicha señalde realimentación con dicha señal de modulación de acción vibratoria y generar una señal (50) de error que representa una diferencia entre una característica de frecuencia de la señal de realimentación y una frecuencia de modulación de acción vibratoria; y un mecanismo (14) para ajustar la función de espectro de pico de dicha señal electromagnética de acuerdo con dicha señal de error, en que la longitud de onda central de dicha señal electromagnética y dicha longitud de onda central del dispositivo selector de longitud de onda resultan alineadas cuando dicha característica de frecuencia de dicha señal de realimentación es dos veces la frecuencia de modulación de acción vibratoria.
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公开(公告)号：AT375638T
公开(公告)日：2007-10-15
申请号：AT02754641
申请日：2002-05-07
Applicant: IBM
Inventor： DECUSATIS CASIMER , JACOBOWITZ LAWRENCE
Abstract: A wavelength-locked loop servo-control circuit and methodology that enables real time mutual alignment of an electromagnetic signal having a peaked spectrum function including a center wavelength and a wavelength selective device implementing a peaked passband function including a center wavelength, in a system employing electromagnetic waves. The circuit comprises a mechanism for applying a dither modulation signal at a dither modulation frequency to the electromagnetic signal, and inputting the dither modulated electromagnetic signal to the wavelength selective device; a mechanism for converting a portion of the dither modulated electromagnetic signal to an electric feedback signal; a mechanism for continuously comparing the feedback signal with said dither modulation signal and generating an error signal representing a difference between a frequency characteristic of the feedback signal and a dither modulation frequency; and a mechanism for adjusting the peaked spectrum function of the electromagnetic signal according to the error signal. The center wavelength of the electromagnetic signal and the wavelength selective device center wavelength become aligned when the frequency characteristic of the feedback signal is two times the dither modulation frequency.
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