公开(公告)号：WO2005101104A3

公开(公告)日：2006-02-09

申请号：PCT/US2005011003

申请日：2005-03-31

Applicant: OPTIMER PHOTONICS INC ,  NIPPA DAVID W ,  RIDGWAY RICHARD W ,  RISSER STEVEN M ,  SCHOELLNER DIRK ,  VASSY LOUIS P

Inventor： NIPPA DAVID W ,  RIDGWAY RICHARD W ,  RISSER STEVEN M ,  SCHOELLNER DIRK ,  VASSY LOUIS P

IPC: G02F1/065

CPC classification number: G02F1/065 ,  G02B6/122 ,  G02F2201/06 ,  G02F2201/127 ,  G02F2202/022 ,  G02F2203/06 ,  G02F2203/48 ,  G02F2203/50

Abstract: Methods of attenuating, delaying the phase, and otherwise controlling an optical signal propagating along a waveguide are provided. According to one method, a variable optical attenuator structure is provided comprising a waveguide core (10), a cladding (20), an electrooptic polymer (30), and a set of control electrodes (40). The core (10), the cladding (20), and the electrooptic polymer (30) are configured such that an increase in the index of refraction of the polymer (30) causes a substantial portion of an optical signal propagating along the waveguide core (10) to couple into a relatively high index region (32) of the electrooptic polymer (30) above the waveguide core (10), so as to inhibit return of the coupled signal to the waveguide core (10). Another embodiment of the present invention introduces a phase delay in the coupled optical signal and permits return of the coupled signal to the waveguide core (10). An additional embodiment contemplates the use of a ridge waveguide structure to enable control of the optical signal.

Abstract translation: 提供衰减，延迟相位以及以其它方式控制沿着波导传播的光信号的方法。 根据一种方法，提供了包括波导芯（10），包层（20），电光聚合物（30）和一组控制电极（40）的可变光衰减器结构。 核心（10），包层（20）和电光聚合物（30）被配置为使得聚合物（30）的折射率的增加导致光信号的大部分沿着波导芯（ 10）耦合到波导芯（10）上方的电光聚合物（30）的相对高的折射率区域（32）中，以便阻止耦合信号返回到波导芯（10）。 本发明的另一实施例引入耦合的光信号中的相位延迟并且允许耦合信号返回到波导芯（10）。 附加实施例考虑使用脊波导结构来实现光信号的控制。

公开(公告)号：WO2004003600A3

公开(公告)日：2004-05-21

申请号：PCT/US0320352

申请日：2003-06-27

Applicant: UNIV CALIFORNIA ,  CHANG WILLIAM S C ,  YU PAUL K L

Inventor： CHANG WILLIAM S C ,  YU PAUL K L

IPC: F28F1/12 ,  G02F1/017 ,  G02F1/295 ,  G02B6/10

CPC classification number: G02F1/01708 ,  B82Y20/00 ,  G02F2201/063 ,  G02F2201/127

Abstract: A method for optical modulation comprising the steps of guiding an optical wave in an optical waveguide (10), the optical wave having an evanescent tail; and applying a modulation voltage to the evanescent tail.

Abstract translation: 一种用于光学调制的方法，包括以下步骤：在光波导（10）中引导光波，所述光波具有渐逝尾部; 并向渐逝尾部施加调制电压。

公开(公告)号：WO2004003600A2

公开(公告)日：2004-01-08

申请号：PCT/US2003/020352

申请日：2003-06-27

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA ,  CHANG, William, S., C. ,  YU, Paul, K., L.

Inventor： CHANG, William, S., C. ,  YU, Paul, K., L.

IPC: G02B

CPC classification number: G02F1/01708 ,  B82Y20/00 ,  G02F2201/063 ,  G02F2201/127

Abstract: A method for optical modulation comprising the steps of guiding an optical wave in an optical waveguide, the optical wave having an evanescent tail; and applying a modulation voltage to the evanescent tail.

Abstract translation: 一种用于光学调制的方法，包括以下步骤：在光波导中引导光波，所述光波具有渐逝尾部; 并向渐逝尾部施加调制电压。

公开(公告)号：WO02023262A1

公开(公告)日：2002-03-21

申请号：PCT/US2001/028490

申请日：2001-09-12

IPC: G02F1/035 ,  G02F1/03 ,  G02F1/225

CPC classification number: B82Y10/00 ,  G02F1/2255 ,  G02F2201/07 ,  G02F2201/127

Abstract: This is an electro-optic modulator having an electro-optic substrate such as lithium niobate (100), an optical waveguide (200) defined within the substrate, an electrode structure including a microwave transmission line (300) elevated from the substrate by conductive legs (350A). In one embodiment, a low-dielectric constant buffer layer (400) is disposed between the substrate and the transmission line. The conductive legs extend from the transmission line to a surface of the substrate toward the wavequide, through the buffer layer. The microwave transmission line is elevated from the substrate at a distance such that the electrical propagation velocity is at a maximum. The high electrical velocity is offset by a loading capacitance introduced by the conductive legs which slows the electrical velocity down on the transmission line to match the optical velocity. Pairs of opposing conductive legs provide a strong electric filed for modulating the optical signal.

Abstract translation: 这是一种电光调制器，其具有诸如铌酸锂（100）的电光衬底，限定在衬底内的光波导（200），包括通过导电腿从衬底升高的微波传输线（300）的电极结构 （350A）。 在一个实施例中，低介电常数缓冲层（400）设置在衬底和传输线之间。 导电支腿通过缓冲层从传输线延伸到基板的表面朝向波形。 微波传输线从衬底以一定距离升高，使得电传播速度最大。 高电速通过由导电支路引入的负载电容来抵消，这使得传输线上的电速降低以匹配光速。 一对相对的导电腿为调制光信号提供了强大的电场。

公开(公告)号：EP1406115B1

公开(公告)日：2007-12-19

申请号：EP03255514.6

申请日：2003-09-04

Applicant: FiBest Limited

Inventor： Soda, Haruhisa ,  Nakagawa, Shigeru

IPC: G02F1/313 ,  G02F1/025

CPC classification number: G02F1/3133 ,  G02F2201/127

公开(公告)号：EP0905543B1

公开(公告)日：2007-06-06

申请号：EP98307847.8

申请日：1998-09-28

Applicant: NGK INSULATORS, LTD.

Inventor： Minakata, Makoto ,  Kondo, Jungo ,  Yoshino, Takashi ,  Imaeda, Minoru

IPC: G02F1/035

CPC classification number: G02F1/0356 ,  G02F2201/127

公开(公告)号：EP1488281A2

公开(公告)日：2004-12-22

申请号：EP02781427.6

申请日：2002-12-02

Applicant: Denselight Semiconductors Pte Ltd.

Inventor： LAM, Yee Loy ,  NAKAMURA, Hiroshi ,  CHAN, Yuen Chen

IPC: G02F1/225 ,  G02F1/035

CPC classification number: B82Y20/00 ,  G02F1/01708 ,  G02F2001/0157 ,  G02F2001/0175 ,  G02F2201/127

Abstract: According to the present invention, a travelling-wave electroabsorption modulator (TW-EAM) comprises: an optical waveguide (10) with a plurality of adjacent regions electrically isolated from each other, the regions being characterized alternately by the properties of electroabsorption (EA) (13) and optical transparency (12) over the same range of optical wavelengths, and a microwave transmission line (15) located above the optical waveguide, such that sections of the transmission line located above EA regions in the optical waveguide are in electrical contact with said EA regions, whereas sections of the transmission line located above transparent regions in the optical waveguide are electrically isolated (18) from said transparent regions. In the absence of a microwave signal, the EA (13) regions are substantially transparent to light in the optical waveguide. When a microwave signal is applied to the EA regions, they become substantially absorbing at the wavelength of the light in the optical waveguide. Thus, by applying a fast time-varying microwave signal to the transmission line, the absorption of light in the waveguide can be modulated temporally, thereby encoding information onto the light beam.

公开(公告)号：EP1474721A1

公开(公告)日：2004-11-10

申请号：EP03700360.5

申请日：2003-01-15

Applicant: Denselight Semiconductors Pte Ltd.

Inventor： LAM, Yee, Loy ,  NAKAMURA, Hiroshi ,  CHAN, Yuen, Chuen

IPC: G02F1/017

CPC classification number: B82Y20/00 ,  G02F1/01708 ,  G02F2201/127 ,  G02F2201/16 ,  G02F2203/25

Abstract: The invention relates to an electroabsorption modulator (EAM) (300), comprising a first EAM section (302) optically coupled to a second EAM section (304), a transition wavelength in the electroabsorption (EA) spectrum of the first EAM section (302), at which absorption changes substantially, being different to a transition wavelength in the EA spectrum of the second EAM section (304). The EAM (300) compensates for chirp (which is caused by intrinsic absorption effects) by driving the two sections with a signal (312) generated from a common modulating signal (314). The driving signal (312) at the first EAM section (302) being preferably in anti-phase with the driving signal (312) at the second EAM section (304).

公开(公告)号：EP1441250A2

公开(公告)日：2004-07-28

申请号：EP04250115.5

申请日：2004-01-12

Applicant: NGK INSULATORS, LTD.

Inventor： Aoki, Kenji ,  Mitomi, Osamu ,  Kondo, Jungo ,  Kondo, Atsuo

IPC: G02F1/035 ,  G02F1/225

CPC classification number: G02F1/035 ,  G02F1/0316 ,  G02F1/225 ,  G02F2201/127

Abstract: An object of the invention is to provide an electrode system for optical modulation of an optical modulator to reduce a thickness "E" of an electrode required for velocity matching and for reducing a propagation loss in the electrode. A substrate 2 is made of an electrooptic material and has one and the other main faces 2a, 2b opposing each other. An electrode system 20A is provided on the substrate 2 for applying a voltage for modulating light propagating in optical waveguides 6A and 6B. The electrode system 20A includes ground electrodes 3A, 3B and a signal electrode 4. A ratio "W/G" of a width "W" of the signal electrode 4 to a gap "G" between the ground and signal electrodes is 0.8 or higher. Preferably, the substrate 2 has a thickness "T" of 20 µm or larger, in a region where the optical waveguides 6A and 6B are provided.

Abstract translation: 本发明的目的是提供一种用于光学调制器的光学调制的电极系统，以减少速度匹配所需的电极的厚度“E”并减少电极中的传播损耗。 基板2由电光材料制成，并且具有彼此相对的一个和另一个主面2a，2b。 电极系统20A设置在基板2上，用于施加用于调制在光波导6A和6B中传播的光的电压。 电极系统20A包括接地电极3A，3B和信号电极4.信号电极4的宽度“W”与接地信号电极之间的间隙“G”的比率“W / G”为0.8以上 。 优选地，在设置有光波导6A和6B的区域中，基板2的厚度“T”为20μm以上。

公开(公告)号：EP1245993A3

公开(公告)日：2003-12-17

申请号：EP02252312.0

申请日：2002-03-28

Applicant: NGK INSULATORS, LTD.

Inventor： Aoki, Kenji, c/o NGK Insulators, Ltd. ,  Kondo, Jungo, c/o NGK Insulators, Ltd. ,  Kondo, Atsuo, c/o NGK Insulators, Ltd. ,  Mitomi, Osamu, c/o NGK Insulators, Ltd.

IPC: G02F1/035 ,  G02F1/225

CPC classification number: G02F1/0356 ,  G02F1/2255 ,  G02F2201/127

Abstract: An optical waveguide device 1A has an optical waveguide substrate 10A and a supporting substrate 6 supporting the substrate 10A. The substrate 10A has a main body 4 made of an electrooptic material and having first main face 4a and a second main face 4b, an optical waveguide 3 formed in or on the main body 4 and an electrode 2A, 2B or 2C formed on the side of the first main face 4a of the main body 4. The supporting substrate 6 is joined with the second main face 4b of the main body 4. A low dielectric portion 11 with a dielectric constant lower than that of the electrooptic material is formed in the supporting substrate 6.

Abstract translation: 光波导器件1A具有光波导基板10A和支撑基板10A的支撑基板6。 基板10A具有由电光材料制成的主体4，具有第一主面4a和第二主面4b，形成在主体4中或之上的光波导3和形成在主体4上的电极2A，2B或2C 主体4的第一主面4a。支撑基板6与主体4的第二主面4b接合。介电常数低于电光材料的低介电部分11形成在 支撑基底6.