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公开(公告)号：JP2002098931A
公开(公告)日：2002-04-05
申请号：JP2001209036
申请日：2001-07-10
Applicant: LUCENT TECHNOLOGIES INC
Inventor： JAQUES JAMES J , PRESBY HERMAN M
Abstract: PROBLEM TO BE SOLVED: To provide an optical device for executing an arithmetic function as a coupling type Boolean logic operation, and to provide the optical device for ciphering and deciphering data. SOLUTION: This optical device is an optical device (50) for performing at least one Boolean logic operation and the device (50) has at least first and second input signals (54, 58) and at least one output signal (OUT). The optical device includes at least one interferferometer device for receiving at least the first and second input signals and also has at least one optical amplifier (64, 66) generating an output signal for executing at least one Boolean logic operation, by creating a phase difference between inputs of the first and second input signals.
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公开(公告)号：JP2000066042A
公开(公告)日：2000-03-03
申请号：JP22812799
申请日：1999-08-12
Applicant: LUCENT TECHNOLOGIES INC
Inventor： PRESBY HERMAN M
Abstract: PROBLEM TO BE SOLVED: To obtain an optical fiber cable adaptable to a narrow input part while maintaining adequate propagation characteristics by arranging a magnification portion at the end of the fiber and having a clad smaller in diameter than an ordinary portion. SOLUTION: The magnification optical fiber 100 includes the ordinary portion 103 having the clad 60 of a normal thickness and the magnification portion 106. The magnification optical fiber 100 includes a core 55 and extends through both of the ordinary portion 103 and the magnification portion 106. The core 55 in the ordinary portion 103 is enclosed by the clad 60 and the core 55 in the magnification portion 106 is enclosed by the clad 116 having the decreased thickness to allow the check of the decreased diameter. The decreased diameter over the entire part of the magnification portion 106 may be inserted into the input part of a photodetector not adaptable to the diameter of the ordinary portion 103 of the optical fiber cable 100 or other devices by the decreased clad 116 of the magnification portion 106. The actual diameter of the magnification portion 106 suffices with, for example, 20 microns and the decreased clad thickness of the case is 10 microns.
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公开(公告)号：JP2000111961A
公开(公告)日：2000-04-21
申请号：JP28397099
申请日：1999-10-05
Applicant: LUCENT TECHNOLOGIES INC
Inventor： MARCUSE DIETRICH , PRESBY HERMAN M
Abstract: PROBLEM TO BE SOLVED: To provide an optical structure which facilitates a changeover of optical signals between plural optical wave guides. SOLUTION: The optical switching device comprises a linear part 105 of a wave guide core, a lateral part 110 of the wave guide core extending from the linear part and a polymer region 120 located on the linear part. The polymer region 120 has its refractive index varying with surrounding temperature. Furthermore, the polymer region 120 forms a wall of polarization 125.
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Patent Agency Ranking
公开(公告)号：JP2000066252A
公开(公告)日：2000-03-03
申请号：JP22812499
申请日：1999-08-12
Applicant: LUCENT TECHNOLOGIES INC
Inventor： PRESBY HERMAN M , MARCUSE DIETRICH
Abstract: PROBLEM TO BE SOLVED: To provide a material used for constituting an optical waveguide. SOLUTION: A Mach-Zehnder interferometer 100 which adopts the section of polymer cladding in one branch is provided. The refractive index of the polymer cladding 130 changes with temp. The temp. of the section of the polymer cladding is modulated so as to give rise to the change corresponding to the phase of the laser beam flowing through a waveguide core 110 limited by the polymer cladding 130 in order to induce the desired switching or modulation of the laser beam.
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公开(公告)号：JP2000066044A
公开(公告)日：2000-03-03
申请号：JP22897799
申请日：1999-08-13
Applicant: LUCENT TECHNOLOGIES INC
Inventor： PRESBY HERMAN M , MARCUSE DIETRICH
Abstract: PROBLEM TO BE SOLVED: To make it possible to have the characteristic capable of exerting a desired influence on the propagation of a laser beam by simple manipulation by largely changing the refractive index of a polymer material dependently upon clad temp. SOLUTION: A doped silica core 105 is enclosed at the remaining surfaces exclusive of the boundary surface with a silica substrate 110 by a silica clad material 115 and in the section of a length L, a polymer clad material 120 encloses these remaining surfaces of the core 105 in place of the silica clad material 115. The polymer clad material 120 is brought into contact with the doped silica core 105 in such a manner and the refractive index of the polymer clad material 120 is controlled with respect to the refractive index of doped silica core 105, by which the propagation of the light passing the core 105 is manipulated in order to embody several benefits. The polymer clad material 120 varies largely in the refractive index of the polymer with a temp. change and on the other hand, the heat and light coefft. of the silica is lower than the same and has an opposite code.
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公开(公告)号：JPH1020137A
公开(公告)日：1998-01-23
申请号：JP5591797
申请日：1997-03-11
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GREENE BENJAMIN I , NARAYANAN CHELLAPPAN , PRESBY HERMAN M
Abstract: PROBLEM TO BE SOLVED: To provide a process for producing an optical waveguide structural body made of silica for converting a light beam of a first mode spot size to a light beam of a second mode spot size. SOLUTION: This process for production selects the radiation energy for irradiating the optical waveguide structural body made of silica in such a manner that this energy is at least partially absorbed by a clad 14. The irradiation of various doses are thereafter applied along the longitudinal direction of the waveguide structural bodies 13, 14. The refractive index change of the clad 14 is made larger than the refractive index change of the core 13 and the change rate thereof changes in the longitudinal direction. Consequently, the spot size of the light beam changes.
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公开(公告)号：CA2357927A1
公开(公告)日：2002-04-05
申请号：CA2357927
申请日：2001-09-27
Applicant: LUCENT TECHNOLOGIES INC
Inventor： TYSON JOHN ANTHONY , PRESBY HERMAN M
Abstract: A free-space wireless optical communication system is disclosed that utilizes a telescope design having aspherical mirrors, such as a Richey- Chetrien (RC) telescope. RC telescopes are characterized by a concave primary mirror and a convex secondary mirror each having a hyperbolic shape. The disclosed mirror configuration provides a larger focal plane that allows for automatic alignment between a transmitter and receiver with a stationary or fixed mirror design, further contributing to a lower fabrication cost. Among other benefits, the larger focal plane permits an n x n fiber array to be positioned in the focal plane of the RC optical telescope, thereby enabling point-to- multipoint communications with a single optical telescope. Each fiber in the n x n fiber array of a transmitting telescope can be focused on a different receiving telescope in a wireless optical communication system. In this manner, each fiber in the n x n fiber array sends optical energy over a distinct path to address a given receiving telescope Likewise, for a multipoint-to-point communication system, an n x n fiber arr ay can be positioned in the focal plane 330 of the RC optical receiving telescope, wit h each fiber in the n x n fiber array receiving optical energy over a distinct path from a give transmitting telescope. A number of fabrication techniques are also disclose d that permit the optical telescopes of the present invention to be fabricated at a reasonable cost that permits such optical telescopes to be deployed in wireless optical communication systems.
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公开(公告)号：CA2357927C
公开(公告)日：2006-05-02
申请号：CA2357927
申请日：2001-09-27
Applicant: LUCENT TECHNOLOGIES INC
Inventor： TYSON JOHN ANTHONY , PRESBY HERMAN M
Abstract: A free-space wireless optical communication system is disclosed that utilizes a telescope design having aspherical mirrors, such as a Richey- Chetrien (RC) telescope. RC telescopes are characterized by a concave primary mirror and a convex secondary mirror each having a hyperbolic shape. The disclosed mirror configuration provides a larger focal plane that allows for automatic alignment between a transmitter and receiver with a stationary or fixed mirror design, further contributing to a lower fabrication cost. Among other benefits, the larger focal plane permits an n x n fiber array to be positioned in the focal plane of the RC optical telescope, thereby enabling point-to- multipoint communications with a single optical telescope. Each fiber in the n x n fiber array of a transmitting telescope can be focused on a different receiving telescope in a wireless optical communication system. In this manner, each fiber in the n x n fiber array sends optical energy over a distinct path to address a given receiving telescope Likewise, for a multipoint-to-point communication system, an n x n fiber arr ay can be positioned in the focal plane 330 of the RC optical receiving telescope, wit h each fiber in the n x n fiber array receiving optical energy over a distinct path from a give transmitting telescope. A number of fabrication techniques are also disclose d that permit the optical telescopes of the present invention to be fabricated at a reasonable cost that permits such optical telescopes to be deployed in wireless optical communication systems.
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