公开(公告)号：US09214790B2

公开(公告)日：2015-12-15

申请号：US13644113

申请日：2012-10-03

Applicant: Applied Optoelectronics, Inc.

Inventor： Jun Zheng ,  Stefan Murry ,  Wen-Yen Hwang

IPC: H04B10/12 ,  H01S3/08 ,  H01S5/40 ,  H04J14/02

CPC classification number: H01S5/4062 ,  H01S5/4087 ,  H04J14/0254 ,  H04J14/0279 ,  H04J14/0282

Abstract: A filtered laser array assembly generally includes an array of laser emitters coupled between external modulators and an arrayed waveguide grating (AWG). Each of the laser emitters emits light across a plurality of wavelengths including, for example, channel wavelengths in an optical communication system. The AWG filters the emitted light from each of the laser emitters at different channel wavelengths associated with each of the laser emitters. Lasing cavities are formed between each of the laser emitters and a back reflector coupled to an output of the AWG such that laser output from the laser emitters is provided at the respective channel wavelengths of the reflected, filtered light. The external modulators enable high speed modulation of the laser output. The modulated laser output may then be optically multiplexed to produce an aggregate optical signal including multiple channel wavelengths.

Abstract translation: 滤波的激光阵列组件通常包括耦合在外部调制器和阵列波导光栅（AWG）之间的激光发射器的阵列。 每个激光发射器在多个波长中发射光，包括例如光通信系统中的信道波长。 AWG在与每个激光发射器相关联的不同通道波长处对来自每个激光发射器的发射光进行滤波。 在每个激光发射器和耦合到AWG的输出的后反射器之间形成激光腔，使得来自激光发射器的激光输出被提供在反射的滤波光的相应通道波长处。 外部调制器可实现激光输出的高速调制。 然后可以将经调制的激光输出光学多路复用以产生包括多个信道波长的聚合光信号。

公开(公告)号：US20150256261A1

公开(公告)日：2015-09-10

申请号：US14720336

申请日：2015-05-22

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Chong Wang ,  Justin Lii ,  Zhengyu Miao

IPC: H04B10/50 ,  G02B6/42 ,  H04B10/40 ,  G02B6/43

CPC classification number: H04B10/40 ,  G02B6/4292 ,  G02B6/43 ,  H04B10/506 ,  H04J14/0246 ,  H04J14/025

Abstract: A coaxial transmitter optical subassembly (TOSA) including a cuboid type TO laser package may be used in an optical transceiver for transmitting an optical signal at a channel wavelength. The cuboid type TO laser package is made of a thermally conductive material and has substantially flat outer surfaces that may be thermally coupled to substantially flat outer surfaces on a transceiver housing and/or on other cuboid type TO laser packages. An optical transceiver may include multiple coaxial TOSAs with the cuboid type TO laser packages stacked in the transceiver housing. The cuboid type TO laser package may thus provide improved thermal characteristics and a reduced size within the optical transceiver.

Abstract translation: 包括长方体型TO激光器封装的同轴发射器光学子组件（TOSA）可以用于在信道波长处发送光信号的光收发器中。 长方体型TO激光器封装由导热材料制成，并且具有基本上平坦的外表面，其可以热收缩到收发器壳体上和/或其它长方体型TO激光器封装上的基本平坦的外表面。 光收发器可以包括多个同轴TOSA，其中堆叠在收发器壳体中的长方体型TO激光器封装。 因此，长方体型TO激光器封装可以在光收发器内提供改进的热特性和减小的尺寸。

公开(公告)号：US09039303B2

公开(公告)日：2015-05-26

申请号：US13893802

申请日：2013-05-14

Applicant: Applied Optoelectronics, Inc.

Inventor： Yi Wang ,  I-Lung Ho ,  Justin Lii

IPC: G02B6/00 ,  G02B6/36 ,  H04B10/40

CPC classification number: H04B10/40 ,  H04J14/0246 ,  H04J14/025

Abstract: A compact multi-channel optical may include a multi-channel transmitter optical subassembly (TOSA), a multi-channel receiver optical subassembly (ROSA) and a circuit board configured and arranged to fit within a relatively small space. The multi-channel ROSA is spaced from the circuit board to allow circuit components to be mounted between the circuit board and the ROSA. The multi-channel ROSA may also be inverted and mounted proximate a transceiver top housing portion, for example, using an L-shaped ROSA support, to transfer heat from the ROSA to the transceiver housing portion. The optical transceiver may be used in a wavelength division multiplexed (WDM) optical system, for example, in an optical line terminal (OLT) in a WDM passive optical network (PON).

Abstract translation: 紧凑的多通道光学器件可以包括多通道发射器光学子组件（TOSA），多通道接收器光学子组件（ROSA）以及被配置和布置成配合在相对小的空间内的电路板。 多通道ROSA与电路板间隔开，以允许电路组件安装在电路板和ROSA之间。 多通道ROSA也可以被倒置并安装在收发器顶部壳体部分附近，例如使用L形ROSA支撑件，以将热量从ROSA传递到收发器壳体部分。 光收发器可以用在波分复用（WDM）光学系统中，例如在WDM无源光网络（PON）中的光线路终端（OLT）中。

公开(公告)号：US08995484B2

公开(公告)日：2015-03-31

申请号：US13774125

申请日：2013-02-22

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Chong Wang ,  Justin Lii

IPC: H01S3/04 ,  H04B10/40

CPC classification number: H01S3/04 ,  H01S5/02208 ,  H01S5/02415 ,  H01S5/0683 ,  H01S5/0687 ,  H01S5/12 ,  H01S5/4012 ,  H01S5/4087 ,  H04B10/2503 ,  H04B10/40 ,  H04B10/506 ,  H04B10/572

Abstract: A temperature controlled multi-channel transmitter optical subassembly (TOSA) may be used in a multi-channel optical transceiver. The temperature controlled multi-channel TOSA generally includes an array of lasers optically coupled to an optical multiplexer, such as an arrayed waveguide grating (AWG), to combine multiple optical signals at different channel wavelengths. The lasers may be thermally tuned to the channel wavelengths by establishing a global temperature for the array of lasers and separately raising local temperatures of individual lasers in response to monitored wavelengths associated with the lasers. A temperature control device, such as a TEC cooler coupled to the laser array, may provide the global temperature and individual heaters, such as resistors adjacent respective lasers, may provide the local temperatures. The optical transceiver may be used in a wavelength division multiplexed (WDM) optical system, for example, in an optical line terminal (OLT) in a WDM passive optical network (PON).

Abstract translation: 温度控制多通道发射机光学组件（TOSA）可用于多通道光收发器。 温度控制的多通道TOSA通常包括光学耦合到诸如阵列波导光栅（AWG）的光学多路复用器的激光器阵列，以组合在不同信道波长处的多个光信号。 激光器可以通过针对激光器阵列建立全局温度并且响应于与激光器相关联的被监视的波长单独提高各个激光器的局部温度而将激光器热调谐到通道波长。 耦合到激光器阵列的诸如TEC冷却器的温度控制装置可以提供全局温度和单独的加热器，例如与相应激光器相邻的电阻器，可以提供局部温度。 光收发器可以用在波分复用（WDM）光学系统中，例如在WDM无源光网络（PON）中的光线路终端（OLT）中。

公开(公告)号：US20140161459A1

公开(公告)日：2014-06-12

申请号：US13760533

申请日：2013-02-06

Applicant: APPLIED OPTOELECTRONICS, INC.

Inventor： I-Lung Ho ,  Jun Zheng ,  Luohan Peng

IPC: H04B10/40

CPC classification number: H04B10/40 ,  H04B10/506 ,  H04J14/0246 ,  H04J14/025

Abstract: A thermally shielded multi-channel transmitter optical subassembly (TOSA) may be used in a multi-channel optical transceiver. The multi-channel TOSA generally includes an array of lasers optically coupled to an arrayed waveguide grating (AWG) to combine multiple optical signals at different channel wavelengths. A plurality of laser array thermal shields are thermally coupled to a temperature control device, such as a thermoelectric cooler (TEC), and thermally shield the respective lasers in the laser array in separate thermally shielded compartments. Each of the lasers may also be individually thermally controlled to provide a desired wavelength, for example, using a heater and/or cooler located in each thermally shielded compartment. The optical transceiver may be used in a wavelength division multiplexed (WDM) optical system, for example, in an optical line terminal (OLT) in a WDM passive optical network (PON).

Abstract translation: 可以在多通道光收发器中使用热屏蔽多通道发射机光学子组件（TOSA）。 多通道TOSA通常包括光学耦合到阵列波导光栅（AWG）的激光器阵列，以组合在不同沟道波长处的多个光信号。 多个激光阵列热屏蔽件热耦合到诸如热电冷却器（TEC）的温度控制装置，并且在分离的热屏蔽隔室中将激光器阵列中的相应激光器热屏蔽。 每个激光器还可以被单独地热控制以提供期望的波长，例如使用位于每个隔热隔间中的加热器和/或冷却器。 光收发器可以用在波分复用（WDM）光学系统中，例如在WDM无源光网络（PON）中的光线路终端（OLT）中。

公开(公告)号：US20140161457A1

公开(公告)日：2014-06-12

申请号：US13708569

申请日：2012-12-07

Applicant: APPLIED OPTOELECTRONICS, INC.

Inventor： I-Lung Ho ,  Jun Zheng ,  Chong Wang

IPC: H04B10/40

CPC classification number: H04B10/40 ,  G02B6/2938 ,  G02B6/42 ,  G02B6/4269 ,  G02B6/4273 ,  H04B10/506 ,  H04J14/0246 ,  H04J14/025

Abstract: A thermally isolated multi-channel transmitter optical subassembly (TOSA) may be used in a multi-channel optical transceiver. The multi-channel TOSA generally includes an array of lasers optically coupled to an arrayed waveguide grating (AWG) to combine multiple optical signals at different channel wavelengths. The lasers, and possibly other components, are wire bonded to a thermal isolation bar. The thermal isolation bar provides an electrical connection to external circuitry and is thermally coupled to a temperature control device, such as a thermoelectric cooler (TEC). Thus, the thermal isolation bar electrically connects the lasers to the circuitry while preventing external heat from being conducted to the lasers from outside the TOSA. The optical transceiver may be used in a wavelength division multiplexed (WDM) optical system, for example, in an optical line terminal (OLT) in a WDM passive optical network (PON).

Abstract translation: 在多通道光收发器中可以使用热隔离多通道发射机光学子组件（TOSA）。 多通道TOSA通常包括光学耦合到阵列波导光栅（AWG）的激光器阵列，以组合在不同沟道波长处的多个光信号。 激光器以及可能的其他部件被引线接合到隔热棒。 热隔离杆提供与外部电路的电连接，并且热耦合到诸如热电冷却器（TEC）的温度控制装置。 因此，热隔离条将激光器电连接到电路，同时防止外部热量从TOSA外部传导到激光器。 光收发器可以用在波分复用（WDM）光学系统中，例如在WDM无源光网络（PON）中的光线路终端（OLT）中。

公开(公告)号：US20140161394A1

公开(公告)日：2014-06-12

申请号：US13709195

申请日：2012-12-10

Applicant: APPLIED OPTOELECTRONICS, INC.

Inventor： I-Lung Ho ,  Stefan J. Murry ,  Richard Yeh

IPC: G02B6/36

CPC classification number: G02B6/3825 ,  G02B6/38 ,  G02B6/3807 ,  G02B6/3869 ,  G02B6/3874 ,  G02B6/3877 ,  G02B6/3879 ,  G02B6/42 ,  G02B6/4201 ,  G02B6/421 ,  G02B6/4246 ,  G02B6/4292 ,  G02B6/4293

Abstract: A multi-channel optical transceiver includes a multi-channel transmitter optical subassembly (TOSA), a multi-channel receiver optical subassembly (ROSA), and a dual fiber type direct link adapter directly linked to the multi-channel TOSA and the multi-channel ROSA with optical fibers. The dual fiber type direct link adapter is also configured to receive pluggable optical connectors, such as LC connectors, mounted at the end of fiber-optic cables including optical fibers for carrying optical signals to and from the transceiver. The dual fiber type direct link adapter thus provides the optical input and output to the transceiver for the optical signals received by the ROSA and transmitted by the TOSA. The multi-channel optical transceiver may be used in a wavelength division multiplexed (WDM) optical system, for example, in an optical line terminal (OLT) in a WDM passive optical network (PON).

Abstract translation: 多通道光收发器包括多通道发射器光子组件（TOSA），多通道接收器光子组件（ROSA）和直接链接到多通道TOSA和多通道的双光纤类型直接链路适配器 带光纤的ROSA。 双纤维型直接连接适配器还被配置为接收可插入的光学连接器，诸如LC连接器，其安装在包括用于将光信号传送到收发器的光纤的光纤的光纤端部。 因此，双光纤类型直接链路适配器为光收发器提供光输入和输出，用于由ROSA接收并由TOSA传输的光信号。 多通道光收发器可以用在波分复用（WDM）光学系统中，例如在WDM无源光网络（PON）中的光线路终端（OLT）中。

公开(公告)号：US20020080836A1

公开(公告)日：2002-06-27

申请号：US10002994

申请日：2001-11-30

Applicant: APPLIED OPTOELECTRONICS, INC.

Inventor： Wen-Yen Hwang

IPC: H01S005/00 ,  H01S003/08

CPC classification number: H01S5/18375 ,  H01S5/0217 ,  H01S5/041 ,  H01S5/141 ,  H01S5/18377 ,  H01S5/1838

Abstract: A vertical-cavity surface-emitting laser (VCSEL) structure has a semiconductor bottom distributed Bragg reflector (DBR) arranged over a substrate; a metal mirror layer interposed between the bottom DBR and the substrate, wherein the metal mirror layer and bottom DBR are adapted to form a first mirror of the laser structure; and a reaction barrier layer interposed between the metal mirror layer and the bottom DBR, wherein the reaction barrier layer is adapted to reduce reaction between the metal mirror layer and the bottom DBR. A phase matching layer is interposed between the reaction barrier layer and the bottom DBR to adjust the phase of radiation reflected by the metal mirror layer such that an increased overall reflectance is obtained. The VCSEL is fabricated by bonding a first metal bonding layer formed over the bottom DBR and a metal mirror layer on a first substrate to a second metal bonding layer formed on a second substrate.

Abstract translation: 垂直腔表面发射激光器（VCSEL）结构具有布置在衬底上的半导体底部分布布拉格反射器（DBR）; 插入在底部DBR和基板之间的金属镜面层，其中金属镜面层和底部DBR适于形成激光结构的第一反射镜; 以及插入在金属镜面层和底部DBR之间的反应阻挡层，其中反应阻挡层适于减少金属镜面层和底部DBR之间的反应。 在反应阻挡层和底部DBR之间插入相位匹配层，以调整由金属镜面层反射的辐射相位，从而获得增加的总反射率。 通过将形成在第一衬底上的第一金属结合层和第一衬底上的金属镜层结合到形成在第二衬底上的第二金属结合层来制造VCSEL。

公开(公告)号：US20240275426A1

公开(公告)日：2024-08-15

申请号：US18437594

申请日：2024-02-09

Applicant: Applied Optoelectronics, Inc.

Inventor： Rafael CELEDON ,  Yi WANG ,  Tina MATHEWS ,  Ruru CHEN ,  Mark SIEJKA ,  Hang XIE ,  Ramesh NALLUR

IPC: H04B1/69 ,  H04L12/28

CPC classification number: H04B1/69 ,  H04L12/2801 ,  H04B2001/6912

Abstract: Low data rate, low power, bi-directional transmissions may be provided over existing physical communication media (e.g., coaxial cables and/or optical fiber) and in the presence of higher bandwidth, higher power primary signals currently being transmitted over the communication media. The low data rate, low power, bi-directional transmissions may be accomplished using spread-spectrum modulated signals that are positioned in frequency relative to the primary signals, such that the low data rate, low power transmissions occur without detectable interference with the primary signals, which include multiplexed narrowband modulated signals. In some embodiments, the primary signals may be modulated using quadrature amplitude modulation (QAM) and multiplexed using orthogonal frequency division multiplexing (OFDM) and the spread-spectrum modulated signals may be chirp spread spectrum (CSS) modulated signals modulated using Gaussian frequency shift keying (GFSK). One example of the spread-spectrum modulated signals is implemented using LoRa technology and communication protocols defined by the LoRaWAN standard.

公开(公告)号：US11863145B1

公开(公告)日：2024-01-02

申请号：US17945600

申请日：2022-09-15

Applicant: Applied Optoelectronics, Inc.

Inventor： Rafael Celedon ,  Steven Blashewski ,  Mark Siejka ,  David Stewart ,  Stéphane Chapeau

IPC: H03G3/30 ,  H04B17/21 ,  H04B10/2575

CPC classification number: H03G3/3068 ,  H04B17/21 ,  H04B10/25751

Abstract: Automatic gain control (AGC) may be accomplished in a radio frequency (RF) amplifier in a hybrid fiber-coaxial (HFC) network using a wideband RF tuner to select multiple pilot channels (e.g., frequencies in lower and upper portions of an RF signals spectrum) for use in measuring power and determining a correction to be applied to the RF amplifier. The power of the pilot channel or channels may be measured, for example, using a received signal strength indicator (RSSI) from the wideband RF tuner or using a power detector circuit. Using the wideband RF tuner allows selectable gain and/or tilt control across a wideband spectrum, such as a channel spectrum of a CATV downstream RF signal, to maintain stable RF output levels of the amplifier as RF input levels vary. The RF amplifier may be a line extender amplifier used in a CATV HFC network to amplify a wideband RF spectrum of up to 1.8 GHz.