公开(公告)号：JP2000147304A

公开(公告)日：2000-05-26

申请号：JP32297999

申请日：1999-11-12

Applicant: APA OPTICS INC

Inventor： BOORD WARREN TIMOTHY ,  JAIN ANIL K

IPC: G02B6/293 ,  G02B6/34 ,  G02B6/42 ,  H04B10/04 ,  H04B10/06 ,  H04B10/135 ,  H04B10/142 ,  H04B10/152 ,  H04J14/00 ,  H04J14/02

Abstract: PROBLEM TO BE SOLVED: To provide an optical multiplexer and an optical demultiplexer for a dense wavelength division multiplex(DWDM) fiber optical communication system. SOLUTION: As the multiplexer, a device functions so as to spatially couple optical signals from plural laser sources (respectively having different wavelengths) and to radiate a spatially coupled laser beam to a single optical fiber. As the demultiplexer 15, the device functions so as to spatially divide the different wavelengths of a wavelength division multiplex optical link and to respectively radiate the different wavelengths to separate optical fibers. Even in either enforcement form, the device contains both of a bulk optical parts and an integrated optical parts. The spatial couplement or spatial separation of the laser beams having different wavelengths is attained by using a bulk diffraction grating 27.

公开(公告)号：WO0110069A9

公开(公告)日：2001-09-20

申请号：PCT/US0020489

申请日：2000-07-27

Applicant: APA OPTICS INC

Inventor： BOORD WARREN TIMOTHY ,  JAIN ANIL K ,  VANDERWERT TERRY

IPC: G02B6/34 ,  G02B6/293

CPC classification number: G02B6/272 ,  G02B6/2793 ,  G02B6/29302 ,  G02B6/2931 ,  G02B6/2938

Abstract: An optical multiplexer/demultiplexer for fiber optical communication is disclosed. The device includes a collimator (21), configured to collimate a beam of wavelength-division-multiplexed signal received from a fiber (20); a splitter (23) for dividing the beam into two parallel beams which are polarized 90 DEG from each other; a retarder, such as a half-wave plate, for rotating the polarization direction of one of the beam by 90 DEG so that both beams are polarized in the same direction; a beam steerer, such as a prism (25), for modifying the diameter in the direction parallel to the polarization direction and for modifying the propagation direction; a wavelength dispersing element, such as a diffraction grating (27), for separating each of beams into a plurality of beams, each having a different center wavelength and propagating along a different angular direction. The optical elements in the multiplexer/demultiplexer are arranged in such a way to direct the diffracted beams through the optical elements, in reverse order, resulting in a plurality of beams, which may be launched into optical fibers (33). The parameters of the optical elements may be chosen to be suitable for multimode dense WDM applications using single-mode transmission fiber.

Abstract translation: 公开了一种用于光纤通信的光复用器/解复用器。 该装置包括：准直器（21），被配置为准直从光纤（20）接收的波分复用信号的波束; 分离器（23），用于将光束分成两个彼此偏振90度的平行光束; 诸如半波片的延迟器，用于将一个光束的偏振方向旋转90度，使得两个光束在相同方向上被偏振; 用于改变与偏振方向平行的方向上的直径并用于修改传播方向的诸如棱镜（25）的光束转向器; 诸如衍射光栅（27）的波长分散元件，用于将每个光束分成多个光束，每个光束具有不同的中心波长并沿着不同的角度方向传播。 复用器/解复用器中的光学元件被布置成以相反的顺序引导衍射光束通过光学元件，导致可以发射到光纤（33）中的多个光束。 可以选择光学元件的参数以适合于使用单模传输光纤的多模密集WDM应用。

公开(公告)号：WO1996041436A3

公开(公告)日：1996-12-19

申请号：PCT/US1996008199

申请日：1996-05-31

Applicant: APA OPTICS, INC.

Inventor： APA OPTICS, INC. ,  BOORD, Warren, Timothy ,  JAIN, Anil, K.

IPC: H04J14/02

公开(公告)号：WO1995034148A1

公开(公告)日：1995-12-14

申请号：PCT/US1995006086

申请日：1995-05-16

Applicant: APA OPTICS, INC.

Inventor： APA OPTICS, INC. ,  BOORD, Warren, Timothy ,  JAIN, Anil, K.

IPC: H04J14/02

CPC classification number: G02B6/12007 ,  G02B6/2931 ,  G02B6/2938 ,  G02B6/4246 ,  G02F1/3133 ,  H04J14/02

Abstract: A method and apparatus for automatically providing for both multiplexing and independent external modulation of two or more wavelengths emitted by a multi-longitudinal mode laser. The present invention uses an integrated optics device chip to enable coupling of the dispersed wavelengths into separate electro-optic modulators which encode each of the carrier wavelengths with a different signal. Accordingly, the volume of data which can be transmitted over an optical fiber network is increased.

Abstract translation: 一种用于自动提供多纵向模式激光器发射的两个或多个波长的多路复用和独立外部调制的方法和装置。 本发明使用集成光学器件芯片来实现将分散的波长耦合到单独的电光调制器中，该电光调制器用不同的信号对每个载波波长进行编码。 因此，可以通过光纤网络传输的数据量增加。

公开(公告)号：WO1993026049A1

公开(公告)日：1993-12-23

申请号：PCT/US1993005448

申请日：1993-06-08

Applicant: APA OPTICS, INC.

Inventor： APA OPTICS, INC. ,  VAN HOVE, James, M. ,  KUZNIA, Jon, N. ,  OLSON, Donald, T. ,  KHAN, Muhammad, Asif ,  BLASINGAME, Margaret, C.

IPC: H01L31/030

CPC classification number: H01L31/03046 ,  H01L31/0224 ,  H01L31/1852 ,  Y02E10/544

Abstract: The invention is an AlxGa1-xN ultraviolet detector with extremely high responsivity at over 200 to 365 nanometers and a very sharp long wavelength cutoff. The active layer for the sensors is a single crystal AlxGa1-xN preferably deposited over a basal plane sapphire substrate using a switched atomic layer epitaxy process.

公开(公告)号：US20030039437A1

公开(公告)日：2003-02-27

申请号：US10228865

申请日：2002-08-26

Applicant: APA Optics, Inc.

Inventor： Warren Timothy Boord ,  Anil K. Jain

IPC: G02B006/293 ,  G02B006/34 ,  G02B006/27

CPC classification number: H04B10/2572 ,  G02B6/2931 ,  G02B6/4206 ,  H04J14/02

Abstract: An optical multiplexer and demultiplexer for dense wavelength division multiplexed (nullDWDMnull) fiber optic communication systems is disclosed. As a multiplexer, the device functions to spatially combine the optical signals from several laser sources (each of which is a different wavelength) and launch the spatially combined laser beams into a single optical fiber. As a demultiplexer, the device functions to spatially separate the different wavelengths of a wavelength division multiplexed optical link and launch each of the different wavelengths into a different optical fiber. In either embodiment, the device includes both bulk optic and integrated optic components. The spatial separation or spatial combination of laser beams of different wavelength is achieved with the use of bulk diffraction gratings. Also, bulk optical components are used to collimate and shape the free space propagating laser beams to enable efficient coupling of light into single mode optical fibers, or integrated optic waveguides, and to reduce optical cross talk. Polarizing beamsplitters orient the polarization direction of the light to enable maximum diffraction efficiency by the gratings and to reduce the polarization dependent loss. Further, the end faces of optical fibers and integrated optic waveguides are angle polished to reduce back reflection and thereby reduce noise caused by feedback to the laser source. Preferably, the diffraction grating and focusing optics are specified to permit multiplexing and demultiplexing of laser wavelengths separated by 0.4 nanometers (nm) in the 1550 nm wavelength band. The preferred field of view of the optics permit multiplexing and demultiplexing of up to 32 wavelength channels separated by 0.4 nanometers in the 1550 nm wavelength band. Although examples of performance are provided for the 1550 nm optical wavelength band, the device components can be designed for use at other wavelength bands, e.g., the optical fiber low absorption loss band at nullnull1310 nm.

公开(公告)号：US20040195562A1

公开(公告)日：2004-10-07

申请号：US10723382

申请日：2003-11-25

Applicant: APA Optics, Inc.

Inventor： Gordon Munns

IPC: H01L047/00

CPC classification number: H01L29/66462 ,  H01L29/155 ,  H01L29/2003 ,  H01L29/7787

Abstract: The invention provides a device having a substrate, a buffer region positioned upon the substrate, wherein the buffer region has an upper buffer region and a lower buffer region, a heterojunction region positioned upon the buffer region, and a superlattice positioned between the lower buffer region and the upper buffer region, wherein the device is configured to function as a heterojunction field effect transistor.

Abstract translation: 本发明提供了一种具有衬底，位于衬底上的缓冲区的器件，其中缓冲区具有上缓冲区和下缓冲区，位于缓冲区上的异质结区和位于下缓冲区之间的超晶格 和上缓冲区，其中该器件被配置为用作异质结场效应晶体管。

公开(公告)号：US20020176135A1

公开(公告)日：2002-11-28

申请号：US10190204

申请日：2002-07-03

Applicant: APA Optics, Inc.

Inventor： Warren Timothy Boord ,  Anil K. Jain

IPC: H04J014/02

CPC classification number: G02B6/272 ,  G02B6/2793 ,  G02B6/2931 ,  G02B6/2938 ,  G02B6/29383 ,  G02B6/29395 ,  G02B6/4206 ,  H04B10/2572 ,  H04J14/02

Abstract: An optical multiplexer and demultiplexer for dense wavelength division multiplexed (nullDWDMnull) fiber optic communication systems is disclosed.. As a multiplexer, the device functions to spatially combine the optical signals from several laser sources (each of which is a different wavelength) and launch the spatially combined laser beams into a single optical fiber. As a demultiplexer, the device functions to spatially separate the different wavelengths of a wavelength division multiplexed optical link and launch each of the different wavelengths into a different optical fiber. In either embodiment, the device includes both bulk optic and integrated optic components. The spatial separation or spatial combination of laser beams of different wavelength is achieved with the use of bulk diffraction gratings. Also, bulk optical components are used to collimate and shape (or steer) the free space propagating laser beams to enable efficient coupling of light into single mode optical fibers, or integrated optic waveguides, and to reduce optical cross talk. Polarizing beamsplitters orient the polarization direction of the light to enable maximum diffraction efficiency by the gratings and to reduce the polarization dependent loss. Further, the end faces of optical fibers and integrated optic waveguides are angle polished to reduce back reflection and thereby reduce noise caused by feedback to the laser source. Preferably, the diffraction grating and focusing optics are specified to permit multiplexing and demultiplexing of laser wavelengths separated by 0.4 nanometers (nm) in the 1550 nm wavelength band. The preferred field of view of the optics permit multiplexing and demultiplexing of up to 32-48 wavelength channels separated by 0.4 nanometers in the 1550 nm wavelength band. Although examples of performance are provided for the 1550 nm optical wavelength band, the device components can be designed for use at other wavelength bands, e.g., the optical fiber low absorption loss band at nullnull1310 nm.

公开(公告)号：WO0211339A3

公开(公告)日：2003-04-17

申请号：PCT/US0123189

申请日：2001-07-24

Applicant: APA OPTICS INC

Inventor： BOORD WARREN TIMOTHY ,  JAIN ANIL K

IPC: G02B6/34 ,  H04B10/2569 ,  H04J14/02 ,  H04B10/18

CPC classification number: G02B6/2931 ,  G02B6/29383 ,  G02B6/29392 ,  G02B6/29397 ,  H04B10/2569 ,  H04J14/02 ,  H04J14/0212 ,  H04J14/0213

Abstract: An optical multiplexer and demultiplexer for dense wavelength division multiplexed ("DWDM") fiber optic communication systems is disclosed. As a multiplexer, the device functions to spatially combine the optical signals from several laser sources (each of which is a different wavelength) and launch the spatially combined laser beams into a single optical fiber. As a demultiplexer, the device functions to spatially separate the different wavelengths of WDM optical link and launch each of the different wavelengths into a different optical fiber. The device includes both bulk optic and integrated optic components. The spatial separation or spatial combination of laser beams of different wavelength is achieved with the use of bulk diffraction gratings. Also, bulk optical components are used to collimate and shape (or steer) the free space propagating laser beams to enable efficient coupling of light into single mode optical fibers, or integrated optic waveguides, and to reduce optical crosstalk.

Abstract translation: 公开了一种用于密集波分复用（“DWDM”）光纤通信系统的光复用器和解复用器。 作为多路复用器，该装置用于空间地组合来自几个激光源（每个都是不同波长）的光信号，并将空间组合的激光束发射到单个光纤中。 作为解复用器，该器件用于在WDM光链路的不同波长空间上分离并将不同波长的每一个发射到不同的光纤中。 该器件包括大量光学元件和集成光学元件。 使用大量衍射光栅实现不同波长的激光束的空间分离或空间组合。 此外，体光学组件用于对自由空间传播的激光束进行准直和形状（或转向），以使得能够有效地将光耦合到单模光纤或集成的光波导中，并减少光学串扰。

公开(公告)号：WO0110069A3

公开(公告)日：2001-08-23

申请号：PCT/US0020489

申请日：2000-07-27

Applicant: APA OPTICS INC

Inventor： BOORD WARREN TIMOTHY ,  JAIN ANIL K ,  VANDERWERT TERRY

IPC: G02B6/34

CPC classification number: G02B6/272 ,  G02B6/2793 ,  G02B6/29302 ,  G02B6/2931 ,  G02B6/2938

Abstract: An optical multiplexer/demultiplexer for fiber optical communication is disclosed. The device includes a collimator (21), configured to collimate a beam of wavelength-division-multiplexed signal received from a fiber (20); a splitter (23) for dividing the beam into two parallel beams which are polarized 90° from each other; a retarder, such as a half-wave plate, for rotating the polarization direction of one of the beam by 90° so that both beams are polarized in the same direction; a beam steerer, such as a prism (25), for modifying the diameter in the direction parallel to the polarization direction and for modifying the propagation direction; a wavelength dispersing element, such as a diffraction grating (27), for separating each of beams into a plurality of beams, each having a different center wavelength and propagating along a different angular direction. The optical elements in the multiplexer/demultiplexer are arranged in such a way to direct the diffracted beams through the optical elements, in reverse order, resulting in a plurality of beams, which may be launched into optical fibers (33). The parameters of the optical elements may be chosen to be suitable for multimode dense WDM applications using single-mode transmission fiber.

Abstract translation: 公开了一种用于光纤通信的光复用器/解复用器。 该装置包括准直器，被配置为准直从光纤接收的波分复用光信号的波束; 用于将来自准直器的准直光束分成两个彼此偏振90°的平行传播光束的分光器; 诸如半波片的延迟器，用于将一个光束的偏振方向旋转90度，使得两个光束在相同方向上极化; 用于改变分束和旋转光束在与偏振方向平行的方向上的直径并用于修改光束的传播方向的光束转向器，例如棱镜; 波长分散元件，例如衍射光栅，用于将分离的，旋转的和转向的光束分成多个光束，每个光束具有不同的中心波长并且沿相对于预定方向的不同的角度方向传播。 复用器/解复用器中的光学元件被布置成以相反的顺序引导衍射光束通过除了波长分散元件本身之外的光学元件，导致可以启动的多个不同中心波长的光束 成为相应的多根光纤。 可以选择光学元件的参数适合于多模密集波长多路复用/解复用应用。 该器件还适用于从单模光纤中解复用信号。