公开(公告)号：EP1093010A3

公开(公告)日：2003-07-09

申请号：EP00118733.5

申请日：2000-08-30

Applicant: Agilent Technologies, Inc. (a Delaware corporation)

Inventor： Bendelli, Giampaolo

IPC: G02F1/31 ,  H04J14/02 ,  G02F1/313

CPC classification number: G02B6/29322 ,  G02B6/29359 ,  G02B6/29383 ,  G02B6/29395 ,  G02F1/313 ,  G02F1/3132 ,  G02F2001/211 ,  G02F2201/307 ,  G02F2203/05 ,  G02F2203/585 ,  H04J14/021 ,  H04Q11/0003

Abstract: An optical add-drop multiplexer which is tunable within a wide tuning range is provided. The device is based on the use of tunable Bragg gratings (2; 20, 21) which form the means for selecting the carrier or carriers to be inserted and extracted, and optical circulators (1, 3) which form input-output ports for the multiplexed stream to be subjected to the extraction and insertion operations and for the multiplexed flow resulting from this operation, and extraction and insertion ports for the carrier or carriers concerned. The gratings (20; 21) are associated with a phase control element (7) which acts in such a way as to disable the extraction function during a tuning transient.

公开(公告)号：EP1283433A2

公开(公告)日：2003-02-12

申请号：EP02291915.3

申请日：2002-07-29

Applicant: ALCATEL

Inventor： Verdrager, Véronique ,  Guerin, Jean-Jacques ,  Riant, Isabelle

IPC: G02F1/01 ,  G02B6/293 ,  G02B6/34

CPC classification number: G02B6/022 ,  G02B6/02095 ,  G02B6/29322 ,  G02B6/29394 ,  G02F1/0115 ,  G02F1/0147 ,  G02F2201/307 ,  H04B10/2519

Abstract: L'invention concerne un dispositif de compensation de la dispersion chromatique comprenant un réseau de Bragg long à pas variable inscrit sur une fibre optique (10) dans laquelle se propage une pluralité de canaux de transmission multiplexés en longueur d'onde, caractérisé en ce que le dispositif comporte des moyens de génération d'un gradient thermique généré par au moins deux moyens de chauffage (20) répartis sur ledit réseau et contrôlés indépendamment l'un de l'autre de manière à compenser simultanément la dispersion chromatique sur plusieurs desdits canaux de transmission.

Abstract translation: 长波长间距布拉格光栅被写入波分复用传输信道传播的光纤（10）中。 一对加热系统（20）分布在光栅上并被独立地控制以同时补偿多个传输通道上的色散。

公开(公告)号：EP1279975A1

公开(公告)日：2003-01-29

申请号：EP01440235.8

申请日：2001-07-24

Applicant: ALCATEL

Inventor： Guerin, Jean Jacques ,  Riant, Isabelle

IPC: G02B6/16 ,  G02B6/34

CPC classification number: G02B6/022 ,  G02F1/0115 ,  G02F1/0128 ,  G02F2201/307

Abstract: The present invention proposes optical fiber equipment (10) having a Bragg grating tunable by a piezoelectric actuator, the equipment comprising an optical fiber (1), a Bragg grating (2) photoinduced in said fiber, a support (3) for supporting said fiber and comprising two uprights (30, 31) at opposite ends of said Bragg grating, each upright having a first holding element (32, 33) for holding said fiber, and a piezoelectric actuator (4) held via its ends between the two uprights, said actuator being longitudinally prestressed in compression between said uprights.

Abstract translation: 本发明提出了通过压电致动器具有布拉格光栅的可调谐光纤设备（10），所述设备包括：光纤，布拉格光栅（2）光敏反应在所述纤维（1），支承件（3），用于支承所述光纤 和包含在所述布拉格的相对端的两个立柱（30,31）光栅，每个立柱具有第一保持元件（32，33），用于保持所述光纤，以及（4）通过其端部的两个立柱之间保持的压电致动器， 所述致动器处于所述立柱之间压缩纵向预加应力。

公开(公告)号：EP1158341A3

公开(公告)日：2003-01-29

申请号：EP01201878.4

申请日：2001-05-18

Applicant: ROKE MANOR RESEARCH LIMITED

Inventor： Mansbridge, John

IPC: G02F1/01 ,  H04B10/18 ,  G02B6/34 ,  H04Q3/52

CPC classification number: H04B10/2519 ,  G02B6/12004 ,  G02B6/12007 ,  G02B6/12019 ,  G02B6/2861 ,  G02B2006/12107 ,  G02F1/011 ,  G02F1/0121 ,  G02F1/0147 ,  G02F2201/307

Abstract: Described herein is an integrated optical device (400) having an input path (402) and an output path (420). A waveguide (430) including a Bragg grating is located in the output path (420). A plurality of control elements are located along the waveguide (430) for providing local adjustment of the Bragg grating to compensate for manufacturing errors. The control elements are conveniently thermo-optic elements, for example, resistive elements whose temperature can be changed by supplying current to them.

Abstract translation: 这里描述的是具有输入路径（402）和输出路径（420）的集成光学设备（400）。 包括布拉格光栅的波导（430）位于输出路径（420）中。 多个控制元件沿着波导（430）定位，用于提供布拉格光栅的局部调整以补偿制造误差。 控制元件通常是热光元件，例如电阻元件，其温度可通过向其供应电流而改变。

公开(公告)号：EP1166171B1

公开(公告)日：2002-12-04

申请号：EP00931006.1

申请日：2000-04-03

Applicant: SIEMENS AKTIENGESELLSCHAFT

Inventor： STOLL, Detlef ,  LEISCHING, Patrick ,  BOCK, Harald ,  RICHTER, Alexander

IPC: G02F1/01

CPC classification number: G02F1/0134 ,  G02F1/011 ,  G02F2201/307 ,  H01S5/0285 ,  H01S5/141 ,  H01S5/146

Abstract: The invention relates to an electronically adjustable Bragg-grating filter module (FM) which comprises a piezoelectric actuator (1) with which the length of the Bragg-grating filter (3) can be modified. The change in length of the Bragg-grating filter can be precisely measured by means of a strain gauge (4). Since the centre frequency of the Bragg-grating filter (3) depends on its length this permits an indirect adjustment of the frequency. The above filter is especially suitable for remote-controlled add-drop modules (ADM). To eliminate the influences of the piezoelectric element during adjustment of the Bragg-grating filter frequency adjustment is carried out by means of a regulator circuit.

公开(公告)号：EP0989437B1

公开(公告)日：2002-11-27

申请号：EP99307242.0

申请日：1999-09-14

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Jin, Sungho ,  Mavoori, Hareesh

IPC: G02F1/01 ,  G02B6/16

CPC classification number: G02B6/022 ,  G02B5/1828 ,  G02F1/011 ,  G02F2201/307

公开(公告)号：EP1192492A1

公开(公告)日：2002-04-03

申请号：EP00926331.0

申请日：2000-04-24

Applicant: CORNING INCORPORATED

Inventor： CHEN, Gang ,  DAWES, Steven, B. ,  KOHNKE, Glenn, E. ,  WELLER-BROPHY, Laura, A.

IPC: G02B6/26

CPC classification number: G02B6/02204 ,  G02B6/02095 ,  G02F1/0118 ,  G02F1/0147 ,  G02F2201/307

Abstract: A dynamically tunable filter (10) controls the magnitude of couplings between core (16) and cladding (18) modes of a waveguide by surrounding the waveguide with an overcladding (20) having an adjustable refractive index. The coupled modes are attenuated along the core to produce the desired spectral response. The adjustment to the overcladding (20) index is made in a range that is above the refractive index of the underlying cladding (18) to vary amplitudes of attenuated bands of wavelengths without shifting central wavelengths of the bands.

Abstract translation: 通过用具有可调节折射率的外包层（20）围绕波导，动态可调谐滤波器（10）控制波导的纤芯（16）和包层（18）模式之间耦合的大小。 耦合模式沿核心衰减以产生所需的光谱响应。 对外包层（20）折射率的调整在高于下层包层（18）的折射率的范围内进行，以改变衰减波段的幅度而不改变波段的中心波长。

公开(公告)号：EP1166171A1

公开(公告)日：2002-01-02

申请号：EP00931006.1

申请日：2000-04-03

Applicant: SIEMENS AKTIENGESELLSCHAFT

Inventor： STOLL, Detlef ,  LEISCHING, Patrick ,  BOCK, Harald ,  RICHTER, Alexander

IPC: G02F1/01

CPC classification number: G02F1/0134 ,  G02F1/011 ,  G02F2201/307 ,  H01S5/0285 ,  H01S5/141 ,  H01S5/146

Abstract: The invention relates to an electronically adjustable Bragg-grating filter module (FM) which comprises a piezoelectric actuator (1) with which the length of the Bragg-grating filter (3) can be modified. The change in length of the Bragg-grating filter can be precisely measured by means of a strain gauge (4). Since the centre frequency of the Bragg-grating filter (3) depends on its length this permits an indirect adjustment of the frequency. The above filter is especially suitable for remote-controlled add-drop modules (ADM). To eliminate the influences of the piezoelectric element during adjustment of the Bragg-grating filter frequency adjustment is carried out by means of a regulator circuit.

公开(公告)号：EP1006377A3

公开(公告)日：2001-08-08

申请号：EP99309307.9

申请日：1999-11-23

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Chia-Yung Chen, Jerry

IPC: G02B6/12 ,  G02B6/34

CPC classification number: G02F1/21 ,  G02B6/12007 ,  G02B2006/12107 ,  G02B2006/12159 ,  G02B2006/12164 ,  G02F2201/307 ,  G02F2203/055

Abstract: A wavelength selective resonant grating exhibits transmission resonances when a single gap between two sections of a split gratings is used to provide a phase shift which is not a quarter wavelength in length or π/2 in phase. When the phase is changed to non -π/2 values (or the gap differs from a quarter wave), the transmission resonance moves from the center of the stop band. Appropriate adjustments of the phase over a π interval allow tuning of the resonance across the entire stop band. The resonant optical wavelength grating can, illustratively, be used as wavelength filter, wavelength monitor, or as part of an Add/Drop arrangement.

公开(公告)号：EP1095299A1

公开(公告)日：2001-05-02

申请号：EP99932340.5

申请日：1999-07-07

Applicant: Digilens Inc.

Inventor： POPOVICH, Milan, M. ,  ADAMS, Michael, R. ,  WALDERN, Jonathan, D.

IPC: G02B5/32 ,  G02F1/1333

CPC classification number: G02F1/13476 ,  G02B5/32 ,  G02F2001/13345 ,  G02F2001/133627 ,  G02F2201/307

Abstract: Disclosed is an optical system (312) and an imaging and display system using the optical system. The optical system has at least first (330) and second (332) optical elements aligned on a common axis (334). In one embodiment, each of the first and second optical elements can operate in an active state or in inactive state and comprise a photopolymer and liquid crystal combination (12). Each of the first and second optical elements is configured to transmit incident light substantially unaltered when each of the first and second optical elements operates in the inactive state. In the active state, however, each of the first and second optical elements does not transmit incident light substantially unaltered. Rather each of the first and second optical elements substantially alters light incident thereon when each of the first and second optical elements operates in the active state.