公开(公告)号：US5367582A

公开(公告)日：1994-11-22

申请号：US100837

申请日：1993-07-30

Applicant: Gregory A. Magel

Inventor： Gregory A. Magel

IPC: G02B6/13 ,  G02B6/34 ,  G02F1/01 ,  G02F1/015 ,  G02F1/025 ,  G02B6/10

CPC classification number: G02F1/011 ,  G02F1/025 ,  G02F2001/0152 ,  G02F2201/063 ,  G02F2201/302 ,  G02F2202/101 ,  G02F2202/105

Abstract: An optical modulator is disclosed. The modulator is based upon an ARROW waveguide, consisting of a substrate, a lower cladding, an interference layer, and a core layer. An electronic element is formed in the structure to control the free-carrier concentration in the interference layer. The light is coupled by grating into the interference layer, where the free-carrier concentration is controlled by the element, which in turn controls the modulation of the light in the interference layer before it is coupled back to the core layer.

Abstract translation: 公开了一种光调制器。 调制器基于由衬底，下包层，干涉层和芯层组成的ARROW波导。 在该结构中形成电子元件以控制干涉层中的自由载流子浓度。 光通过光栅耦合到干涉层中，其中自由载流子浓度由元件控制，该元件又在干涉层耦合回核心层之前控制干涉层中的光的调制。

公开(公告)号：US5216680A

公开(公告)日：1993-06-01

申请号：US728673

申请日：1991-07-11

Applicant: Robert Magnusson ,  Shu-Shaw Wang

Inventor： Robert Magnusson ,  Shu-Shaw Wang

IPC: G02B5/18 ,  G02B5/20 ,  G02F1/01 ,  G02F1/03 ,  H01S3/1055 ,  H01S3/106 ,  H01S3/107 ,  H01S5/028 ,  H01S5/125 ,  H01S5/14

CPC classification number: H01S3/106 ,  G02B5/1828 ,  G02B5/203 ,  G02F1/01 ,  H01S5/141 ,  G02F1/0338 ,  G02F2201/302 ,  G02F2203/055 ,  H01S3/1055 ,  H01S3/107 ,  H01S5/028 ,  H01S5/125

Abstract: A guided-mode resonance filer is provided which can be used as an optical filter with very narrow line width and as an efficient optical switch. Diffraction efficiencies and passband frequencies are calculated based on guided-mode resonance properties of periodic dielectric structures in a waveguide geometry. The guided-mode resonance filter preferably includes means for changing various parameters within the grating so as to change passband frequencies in response thereto. Also, the present invention envisions a narrowband tuneable laser having a diffraction grating of the present invention placed within a laser cavity to provide narrowband optical wave output from the narrowband tuneable laser In another preferred embodiment, the present diffraction grating can be supported by a semiconductor substrate, preferably adjacent to a semiconductor laser for fine-tuning the output of the semiconductor laser. In still another preferred embodiment, the present diffraction grating can be placed between thin-film layers to enhance thin-film performance characteristics.

Abstract translation: 提供了可以用作具有非常窄的线宽的滤光器和作为有效的光开关的导模谐振滤波器。 衍射效率和通带频率基于波导几何中的周期性电介质结构的导模谐振特性来计算。 导模谐振滤波器优选地包括用于改变光栅内的各种参数以便响应于此改变通带频率的装置。 此外，本发明设想将具有本发明的衍射光栅的窄带可调激光器设置在激光腔内，以提供来自窄带可调激光器的窄带光波输出。在另一优选实施例中，本发明的衍射光栅可由半导体衬底 ，优选地邻近半导体激光器，用于微调半导体激光器的输出。 在又一优选实施例中，本发明的衍射光栅可以放置在薄膜层之间以增强薄膜性能特性。

公开(公告)号：US4852961A

公开(公告)日：1989-08-01

申请号：US251564

申请日：1988-09-30

Applicant: Osamu Yamamoto ,  Toshihiko Yoshida

Inventor： Osamu Yamamoto ,  Toshihiko Yoshida

IPC: G02B6/122 ,  G02F1/35 ,  G02F1/355 ,  G02F1/37 ,  G02F1/377

CPC classification number: G02F1/377 ,  G02F2001/374 ,  G02F2201/302

Abstract: A device for the changing of the wavelength of light comprising a non-linear optical crystal, first and second optical waveguides that are formed in the non-linear optical crystal, and an introducing means that is positioned adjacent to the second optical waveguide, the light being incident upon the first optical waveguide and propagated within the first optical waveguide, resulting in harmonic light that satisfies the phase-matching conditions, and the harmonic light being introduced, by the introducing means, into the second optical waveguide from which the harmonic light is output.

公开(公告)号：US3804489A

公开(公告)日：1974-04-16

申请号：US31268272

申请日：1972-12-06

Applicant: BELL TELEPHONE LABOR INC

Inventor： LI T ,  STANDLEY R

IPC: G02F1/035 ,  G02F1/313 ,  G02F1/26

CPC classification number: G02F1/035 ,  G02F1/3137 ,  G02F2201/124 ,  G02F2201/302

Abstract: An optical switch useful in thin-film electro-optic light guides relies on an induced stationary diffraction grating. The grating is produced by an interdigital electrode structure which is deposited on the electro-optic guide. The application of a voltage to the electrode pattern produces a spatial modulation of the refractive index of the guide which acts as a diffraction grating to light traveling in the guide. This grating causes light in the guide to be diffracted out of the guide, thereby stopping transmission. Removal of the voltage eliminates the grating and restores transmission.

Abstract translation: 用于薄膜电光导光子的光学开关依赖于诱导的固定衍射光栅。 光栅由沉积在电光导体上的叉指电极结构产生。 向电极图案施加电压产生作为衍射光栅的导向器的折射率的空间调制以在导向器中行进的光。 该光栅使引导件中的光从引导件衍射出来，从而停止传输。 去除电压消除光栅并恢复传输。

公开(公告)号：EP1704428B1

公开(公告)日：2008-05-28

申请号：EP03789424.3

申请日：2003-12-24

Applicant: Pirelli & C. S.p.A.

Inventor： PIETRA, Giulia ,  GORNI, Giacomo Maria

IPC: G02B5/20 ,  H01S5/00

CPC classification number: G02B6/12007 ,  G02B6/124 ,  G02F1/216 ,  G02F2201/302 ,  G02F2203/055 ,  G02F2203/15 ,  H01S3/08059 ,  H01S3/105 ,  H01S3/1055 ,  H01S5/12 ,  H01S5/141 ,  H01S5/142

公开(公告)号：EP1307781A1

公开(公告)日：2003-05-07

申请号：EP01943152.7

申请日：2001-05-18

Applicant: Fraunhofer-Gesellschaft zurFörderung der angewandten Forschung e.V.

Inventor： GROTE, Norbert ,  PRZYREMBEL, Georges ,  YAO, Huihai

IPC: G02F1/313 ,  G02F1/01 ,  G02F1/065 ,  H04J14/02 ,  G02B6/12

CPC classification number: G02F1/3132 ,  G02F1/0147 ,  G02F1/065 ,  G02F2201/302 ,  G02F2202/022

Abstract: The invention relates to a tuneable optical grid-assisted add-drop filter in codirectional mode of operation, which has the structure of a directional coupler filter with at least two adjacent wave guides having different refraction indices. The inventive filter must exhibit a spectral bandwidth of the filter transmission curve in the range from 50 GHz to 400 GHz for a high resolution in order to be tuneable and it must be producible in a more straightforward and more cost-effective manner, with dimensional tolerances higher than that of InP based add-drop filters. For that purpose, the material of the two wave guides is composed of two different classes of materials having different optical parameters. The thermal refraction index coefficient dn/dT, the electrooptical coefficient dn/dE or the dispersion dn/dμ of these two materials differentiate from each other in such a way that, in case of an action carried out upon the two wave guides with the same technical means in a view to changing the temperature, the electric field or the wavelength, effects with different strength occur and therefore, means for changing these parameters are provided. A polymer and silica are used as wave guide materials arranged vertically or horizontally relatively to each other. For changing the optical parameter dn/dT, a device for modifying the temperature is used to influence the whole surface of a chip which contains the filter, said device being possibly identical to a device for stabilising the chip temperature.

公开(公告)号：EP1155355A1

公开(公告)日：2001-11-21

申请号：EP00904763.0

申请日：2000-02-16

Applicant: PPM Photomask Inc. ,  Kulishov, Mykola

Inventor： KULISHOV, Mykola

IPC: G02F1/29 ,  H01S3/115

CPC classification number: G02F1/2955 ,  G02F1/05 ,  G02F1/065 ,  G02F1/292 ,  G02F2201/124 ,  G02F2201/15 ,  G02F2201/302 ,  G02F2201/305 ,  G02F2202/022 ,  G02F2202/20

Abstract: A diffraction grating for a waveguide or for externally incident light. The grating includes a substrate and an electrooptic structure extending over it. The electrooptic structure may include a waveguide having a propagation axis. A first and a second electrode structure are provided on either side of the electrooptic structure so that an electric field is generated in the electrooptic structure when a potential is applied to the electrodes. The first electrode structure has an interdigitated configuration defining a plurality of fingers. In use, respective potentials V0 and V0 +ΔV are applied to adjacent fingers. The diffraction grating induced in the electrooptic structure by the periodic electric field advantageously has a refractive index adjustable by varying V0 and ΔV and a spatial periodicity adjustable by varying ΔV.

公开(公告)号：EP1002256A1

公开(公告)日：2000-05-24

申请号：EP98925447.9

申请日：1998-05-05

Applicant: Schleifring und Apparatebau GmbH

Inventor： POISEL, Hans

IPC: G02F1/01 ,  H04B10/22

CPC classification number: G02F1/011 ,  G02F2201/302

Abstract: The invention relates to a device for transmitting optical signals between two dynamically decoupled systems, preferably two mutually moveable systems. Said device comprises at least one emitter unit including a first light source, the first system being arranged on said unit. It also comprises a receiver unit having at least one optical fiber. The second system is arranged on said receiver unit along which light source can be moved and in which light from the light source can be injected. The invention features a light-refracting layer applied at least to optical fiber surface, directly opposite a first light source and at least one coherent light source arranged on said first system, the light of which prints dynamically an optical network on the light refracting layer through superimposed beams at the light injection port. The network has diffraction properties for the light from said first light source, so that light can be injected into the optical fiber.

公开(公告)号：EP0864914A2

公开(公告)日：1998-09-16

申请号：EP98104441.5

申请日：1998-03-12

Applicant: CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A.

Inventor： Campi, Domenico ,  Coriasso, Claudio ,  Faustini, Luca ,  Stano, Alessandro

IPC: G02F1/35

CPC classification number: G02F1/3521 ,  G02F2201/302

Abstract: An integrated optics non linear coupler presents on a surface a first and a second waveguide (2, 3) coupled contradirectionally by means of a distributed feedback grating (10). The first waveguide (2) defines an input port (4) and a first output port (5) of the device (transmission output) and the second waveguide (3) defines a second output port (6) of the device (reflection output). By means of an optical control signal injected into the device together with an information signal, the device can be brought to conditions of non-linear operation, thus making the grating (10) switch from transmitting to reflecting behaviour or vice versa with respect to a given wavelength.

Abstract translation: 集成的光学非线性耦合器在表面上呈现通过分布式反馈光栅（10）在不定向上耦合的第一和第二波导（2,3）。 第一波导（2）限定设备的输入端口（4）和第一输出端口（5），第二波导管（3）限定设备的第二输出端口（反射输出） 。 通过与信息信号一起注入到装置中的光学控制信号，该装置可以被带到非线性操作的条件，从而使得光栅（10）相对于一个 给定波长。

公开(公告)号：EP0463886A2

公开(公告)日：1992-01-02

申请号：EP91305914.3

申请日：1991-06-28

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Yoshida, Toshihiko ,  Watanabe, Masanori ,  Yamamoto, Osamu

IPC: G02F1/37 ,  G02B6/12

CPC classification number: G02F1/377 ,  G02F2001/374 ,  G02F2201/302

Abstract: A light wavelength converter which includes a laser beam source (30) for radiating fundamental waves, a first optical waveguide (42) formed on a substrate (41) so as to convert the fundamental waves into harmonics which are radiated through the substrate, a grating coupler (45) provided on the substrate so as to receive the harmonics propagated through the substrate, and a second optical waveguide (43) formed on the substrate, the second optical guide being connected to the grating coupler so as to radiate the harmonics outside.

Abstract translation: 一种光波长转换器，包括用于辐射基波的激光束源，形成在基板上以将基波转换成通过基板辐射的谐波的第一光波导，设置在基板上的光栅耦合器，以便接收 通过衬底传播的谐波和形成在衬底上的第二光波导，第二光导被连接到光栅耦合器以便将谐波辐射到外部。