公开(公告)号：US20020181875A1

公开(公告)日：2002-12-05

申请号：US09870261

申请日：2001-05-30

Applicant: INSTITUT NATIONAL D'OPTIQUE

Inventor： Jocelyn Lauzon ,  Pierre-Yves Cortes

IPC: G02B006/26

CPC classification number: G02F1/3132 ,  G02B6/124 ,  G02B2006/12109 ,  G02F2201/307 ,  G02F2203/055

Abstract: A wavelength tunable optolelectronic device. Two channel waveguides are provided in an optoelectronic structure made of a ferroelectric material. The wave-guides are adjacent along at least a coupling region. A periodically poled structure is provided in the coupling region, and at least one of the waveguides is untouched by this structure. An electric field is applied in the coupling region, through both waveguides, to enable coupling a light of a given wavelength between the two waveguides. The amplitude of the electric field may be selected to tune the coupling wavelength. A third waveguide or more having a coupling region in common with the second waveguide may also be added to allow the bandwidth of the resulting beam to also be tuned.

Abstract translation: 一种波长可调光电器件。 在由铁电材料制成的光电结构中提供两通道波导。 波导沿着至少一个耦合区相邻。 在耦合区域中提供周期性极化结构，并且至少一个波导不被该结构所影响。 通过两个波导在耦合区域中施加电场，以便耦合在两个波导之间的给定波长的光。 可以选择电场的幅度来调谐耦合波长。 还可以添加具有与第二波导共同的耦合区域的第三波导或更多，以允许所得到的波束的带宽被调谐。

公开(公告)号：US20020176125A1

公开(公告)日：2002-11-28

申请号：US10200183

申请日：2002-07-23

Applicant: Proximion Fiber Optics AB.

Inventor： Adel Asseh ,  Mikael Bergman ,  Bengt Sahlgren ,  Simon Sandgren ,  Raoul Stubbe

IPC: G02F001/01

CPC classification number: G01J3/1256 ,  G02F1/125 ,  G02F2201/307

Abstract: A method of establishing transmission of light through a chirped Bragg-reflector, a method of analyzing the power spectrum of a light signal using a chirped Bragg-reflector, and an arrangement for analyzing the power spectrum of a light signal. The Bragg-reflector reflects, in an unperturbed state, essentially all incident light within a predefined wavelength range. The methods include the steps of directing the light to be analyzed into an input end of a light-guiding structure, such as an optical fiber, which light-guiding structure is provided with a Bragg-reflector, and sending an acoustic pulse along the light-guiding structure, thereby effectively lowering the reflectance of the Bragg-reflector for a certain wavelength at a certain time. By monitoring the light thus transmitted through the Bragg-reflector, a power spectrum analysis of the incident light is obtained.

Abstract translation: 通过啁啾布拉格反射器建立光的透射的方法，使用啁啾布拉格反射器分析光信号的功率谱的方法以及用于分析光信号的功率谱的装置。 在无扰动状态下，布拉格反射器基本上反射了预定波长范围内的所有入射光。 这些方法包括以下步骤：将待分析的光引导到诸如光纤的光导结构的输入端，光导结构设置有布拉格反射器，并沿着光发送声脉冲 导向结构，从而在一定时间内有效地降低了布拉格反射器对某一波长的反射率。 通过监测通过布拉格反射器传输的光，可以获得入射光的功率谱分析。

公开(公告)号：US20020168141A1

公开(公告)日：2002-11-14

申请号：US10115253

申请日：2002-04-04

Applicant: ALCATEL

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

IPC: G02B006/34

CPC classification number: G02F1/0115 ,  G02B6/02085 ,  G02B6/022 ,  G02F2201/307

Abstract: The present invention relates to a Bragg grating filter optical waveguide device, comprising an optical fiber provided with a Bragg grating region which is externally strained to alter the range of chirping. The external strain is induced by a gradient-generating mechanical body bonded onto the length of the fiber grating.

Abstract translation: 布拉格光栅滤波器光波导器件技术领域本发明涉及布拉格光栅滤波器光波导器件，其包括设置有布拉格光栅区域的光纤，其外部应变以改变啁啾的范围。 外部应变由粘附在光纤光栅长度上的梯度产生机械体引起。

公开(公告)号：US20020126384A1

公开(公告)日：2002-09-12

申请号：US10044561

申请日：2002-01-09

Inventor： Michael P. Petrov ,  Alexander V. Shamrai ,  Victor M. Petrov

IPC: G02B005/18

CPC classification number: G02F1/0311 ,  G02F1/0338 ,  G02F2201/305 ,  G02F2201/307 ,  G02F2203/055

Abstract: The present invention provides a new method for spectral filtering of optical radiation wherein the light to be filtered is directed onto two or more spaced apart layers of photosensitive material. A holographic grating is recorded in the layers so that each layer of the photosensitive material contains a portion of the recorded holographic grating. The output optical signal is formed as the result of interference of the light reflected due to the Bragg diffraction from the parts of the diffraction grating recorded in different layers. The reflected light propagates through the spaced apart electrooptical layers sandwiched between the photosensitive layers. The refractive index of the electrooptical layers is varied by the application of the appropriate electrical field to provide the phase difference between the reflected optical signals in order to obtain the desired value of the total output signal resulted from the interference of the reflected light.

Abstract translation: 本发明提供了一种用于光学辐射的光谱滤波的新方法，其中待滤波的光被引导到感光材料的两个或更多间隔开的层上。 全息光栅被记录在层中，使得感光材料的每层包含记录的全息光栅的一部分。 输出光信号是由于记录在不同层中的衍射光栅的部分由于布拉格衍射而反射的光的干涉而形成的。 反射光通过夹在感光层之间的间隔开的电光层传播。 通过施加适当的电场来改变电光层的折射率，以提供反射光信号之间的相位差，以便获得由反射光的干涉产生的总输出信号的期望值。

公开(公告)号：US20020102056A1

公开(公告)日：2002-08-01

申请号：US09745638

申请日：2000-12-20

Inventor： Sean M. Koehl ,  Dean A. Samara-Rubio

IPC: G02B006/26 ,  G02F001/035 ,  G02B006/35

CPC classification number: G02F1/025 ,  G02B2006/12145 ,  G02F1/2257 ,  G02F2001/0152 ,  G02F2201/307

Abstract: An optical switch having regions to which conductors are coupled outside an optical path of the optical switch. In one embodiment, the disclosed optical switch includes a plurality of first polarity regions arranged along an optical waveguide disposed in a semiconductor substrate layer. A first polarity region signal line conductor is in contact with each one of the plurality of first polarity regions outside an optical path of the optical waveguide. A plurality of second polarity regions are arranged along the optical waveguide disposed in the semiconductor substrate layer. A second polarity region signal line conductor is in contact with each one of the plurality of second polarity regions outside the optical path of the optical waveguide.

公开(公告)号：US06411746B1

公开(公告)日：2002-06-25

申请号：US09484491

申请日：2000-01-18

Applicant: Darol Chamberlain ,  Gang Chen ,  Steven B. Dawes ,  Peter J. McNeilly ,  Mike X. Ouyang ,  Laura A. Weller-Brophy

Inventor： Darol Chamberlain ,  Gang Chen ,  Steven B. Dawes ,  Peter J. McNeilly ,  Mike X. Ouyang ,  Laura A. Weller-Brophy

IPC: G02F1035

CPC classification number: G02F1/0147 ,  G02F1/0115 ,  G02F2201/307 ,  G05D23/24

Abstract: The present invention relates to a tunable optical device 10 that includes an optical fiber device 12 having optical properties that vary with temperature and a heater 14. The heater 14 is thermally coupled to the optical fiber device 12. The heater 14 includes a metal layer 18 and two electrical contacts 20, 22 that are electrically connected to the metal layer 18. The electrical contacts 20, 22 are spaced apart from one another along the metal layer 18. The electrical resistance of the portion of the metal layer 18 between the contacts 20, 22 varies with temperature and serves as a resistive heater. The invention also includes a controller 16 that is electrically connected to the heater 14. The controller 16 provides electrical power to the heater 14 and measures the electrical voltage across the heater 14. The controller 16 compares the measured electrical voltage to a pre-selected reference value. The controller then regulates the amount of electrical current supplied to the heater 14. By regulating the amount of electrical current supplied to the heater 14 the temperature of the heater 14 is controlled.

Abstract translation: 本发明涉及一种可调谐光学器件10，其包括具有随温度变化的光学特性的光纤器件12和加热器14.加热器14热耦合到光纤器件12.加热器14包括金属层18 以及电连接到金属层18的两个电触点20,22.电触点20,22沿着金属层18彼此间隔开。金属层18在触点20之间的电阻 ，22随温度变化，用作电阻加热器。 本发明还包括电连接到加热器14的控制器16.控制器16向加热器14提供电力并测量加热器14两端的电压。控制器16将测得的电压与预选参考值进行比较 值。 然后，控制器调节供应给加热器14的电流量。通过调节供应给加热器14的电流量，控制加热器14的温度。

公开(公告)号：US20020048430A1

公开(公告)日：2002-04-25

申请号：US09904508

申请日：2001-07-16

Inventor： Minoru Hashimoto ,  Kiichi Yoshiara ,  Takuya Ohira ,  Shinichi Takagi

IPC: G02B006/34

CPC classification number: G02B6/29322 ,  G02B6/02204 ,  G02B6/29394 ,  G02B6/29395 ,  G02B6/29398 ,  G02F1/0115 ,  G02F1/0147 ,  G02F2201/307

Abstract: A light dispersion equalizer for compensating for variation in propagation rate among employed wavelengths. On a substrate having a groove for mounting an optical fiber provided thereon, heaters are formed side by side in parallel with the optical fiber mounting groove, and the optical fiber is accommodated in the groove. Because distance between the optical fiber and the heaters can be fixed, positioning of the optical fiber with the heaters can be performed with high accuracy.

Abstract translation: 一种光分散均衡器，用于补偿所采用的波长之间的传播速率的变化。 在其上设置有用于安装光纤的槽的基板上，与光纤安装槽并列形成加热器，并且光纤被容纳在槽中。 由于光纤和加热器之间的距离可以固定，所以可以高精度地进行光纤与加热器的定位。

公开(公告)号：US06374014B1

公开(公告)日：2002-04-16

申请号：US09550650

申请日：2000-04-17

Applicant: Edward Joseph Jablonski

Inventor： Edward Joseph Jablonski

IPC: G02B634

CPC classification number: G02B6/0218 ,  G02F1/0115 ,  G02F1/0147 ,  G02F2201/307

Abstract: A fiber grating package which substantially reduces Bragg wavelength variations resulting from axial strain on a fiber. The package includes a fiber segment including a Bragg grating. The segment is fixed between two points separated by a distance less than the length of the segment. As a result, the grating is bent to allow bending or rotation of the segment in response to changes in the relative positions of the ends of the fiber segment. In one embodiment, the package may include a temperature control structure and control electronics for heating the grating to a stable desired temperature using temperature feedback. Electronic control can be internal or external to the package depending size requirements for the package.

Abstract translation: 纤维光栅封装，其基本上减少了由光纤上的轴向应变引起的布拉格波长变化。 该封装包括包括布拉格光栅的光纤段。 该段固定在两个点之间，距离小于段的长度。 结果，光栅被弯曲以允许响应于光纤段的端部的相对位置的变化而对该段进行弯曲或旋转。 在一个实施例中，封装可以包括温度控制结构和用于使用温度反馈将光栅加热到稳定的期望温度的控制电路。 根据封装的尺寸要求，电子控制可以是封装的内部或外部。

公开(公告)号：US20010038735A1

公开(公告)日：2001-11-08

申请号：US09846305

申请日：2001-05-02

Inventor： Torsten Augustsson

IPC: G02B006/293 ,  G02B006/35

CPC classification number: H04J14/0213 ,  G02F1/225 ,  G02F1/3136 ,  G02F2001/212 ,  G02F2201/307 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0216 ,  H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/0022 ,  H04Q2011/0032

Abstract: The present invention relates to an apparatus and a method for wavelength selective switching of a plurality of optical wavelength channels. The apparatus comprises two MMI waveguides interconnected by at least two Mach-Zehnder waveguide structures arranged in parallel, of which each is arranged to transmit a respective portion of the intensity of said plurality of optical wavelength channels. Each Mach-Zehnder waveguide structure comprises a demultiplexing unit, a multiplexing unit and at least two waveguides arranged in parallel, wherein the demultiplexing unit is arranged for demultiplexing of said plurality of optical wavelength channels into at least two channel groups, each waveguide arranged in parallel is arranged for transmission of a respective of said channel groups to the multiplexing unit, and is further provided with a respective multichannel wavelength selective phase control unit arranged for individual phase control of at least some channels in the respective of said channel groups, which is transmitted to the multiplexing unit, and the multiplexing unit is arranged for multiplexing of said channel groups.

Abstract translation: 本发明涉及一种用于多个光波长信道的波长选择性切换的装置和方法。 该装置包括由平行布置的至少两个马赫 - 曾德尔波导结构互连的两个MMI波导，其中每个波导结构被布置成透射所述多个光波长通道的强度的相应部分。 每个马赫 - 策德尔波导结构包括解复用单元，多路复用单元和并联布置的至少两个波导，其中解复用单元布置成用于将所述多个光波长通道解复用为至少两个通道组，每个波导平行布置 布置成用于将各个所述信道组传输到复用单元，并且还设置有相应的多信道波长选择相位控制单元，其被布置用于各个所述信道组中的至少一些信道的单独相位控制，所述信道被传输 并且复用单元被布置为用于所述信道组的多路复用。

公开(公告)号：US20010029884A1

公开(公告)日：2001-10-18

申请号：US09320335

申请日：1999-05-26

Inventor： MINORU IMAEDA ,  TAKASHI YOSHINO

IPC: C30B028/14 ,  C30B023/00 ,  C30B025/00 ,  C30B028/12

CPC classification number: G02F1/377 ,  C30B23/02 ,  C30B29/30 ,  G02F1/3551 ,  G02F2201/307 ,  G02F2202/20 ,  Y10S117/904 ,  Y10S117/918

Abstract: A method for producing a single-crystalline film made of a single crystal of lithium potassium niobate-lithium potassium tantalate solid solution or a single crystal of lithium potassium niobate, comprising the steps of preparing a target made of a material for the single-crystalline film, preparing a foundation made of a single crystal of lithium potassium niobate-lithium potassium tantalate solid solution or a single crystal of lithium potassium niobate, irradiating upon the target, thereby gasifying molecules constituting the target by dissociation and evaporation thereof, and epitaxially growing the single-crystalline film on the foundation.

Abstract translation: 一种由铌酸锂钾 - 钾酸钾固体溶液或单铌酸锂钾单晶制成的单晶膜的方法，包括以下步骤：制备由单晶膜材料制成的靶 制备由铌酸锂 - 锂铌酸钾固溶体的单晶或铌酸锂钾的单晶构成的基体，照射到靶上，由此通过解离和蒸发气化构成靶的分子，并外延生长单 结晶膜在基础上。