公开(公告)号：US20140161455A1

公开(公告)日：2014-06-12

申请号：US13708064

申请日：2012-12-07

Applicant: APPLIED OPTOELECTRONICS, INC.

Inventor： I-Lung Ho ,  Luohan Peng ,  Justin Lii

IPC: H04J14/02

CPC classification number: H04B10/40 ,  H04J14/0254 ,  H04J14/0282

Abstract: A temperature controlled 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 temperature control system may be used to control the temperature of both the array of lasers and the AWG with the same temperature control device, e.g., a thermoelectric cooler (TEC). The multi-channel optical transceiver may also include a multi-channel receiver optical subassembly (ROSA). 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。 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。 温度控制系统可以用相同温度控制装置（例如热电冷却器（TEC））来控制激光器阵列和AWG阵列的温度。 多通道光收发器还可以包括多通道接收器光学子组件（ROSA）。 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：US11221460B2

公开(公告)日：2022-01-11

申请号：US16514580

申请日：2019-07-17

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Hsiu-Che Wang ,  Qin Li

IPC: G02B7/02 ,  H04B10/50

Abstract: The present disclosure is generally directed to a lens clip that defines at least one mounting surface for coupling to and supporting an array of optical components, e.g., a laser diode and associated components, and an optical lens slot to receive and securely hold an array of optical lenses at a predetermined position relative to the optical components to ensure nominal optical coupling. The optical lens slot includes dimensions that permit insertion of each optical lens into the same and restrict travel along one or more axis. Accordingly, disposing an optical lens within the lens slot ensures correct alignment along at least two axis, e.g., Z and X, with the third axis (e.g., Y) extending parallel along the slot to permit lateral adjustment of each lens.

公开(公告)号：US10191233B2

公开(公告)日：2019-01-29

申请号：US15473557

申请日：2017-03-29

Applicant: Applied Optoelectronics, Inc.

Inventor： Kai-Sheng Lin ,  I-Lung Ho ,  Hsiu-Che Wang

IPC: G02B5/08 ,  G02B6/42 ,  H04B10/60

Abstract: A mirror device for use in an optical subassembly is disclosed that includes at least one surface with a visible indicator to allow a technician to differentiate a highly-reflective surface from relatively less reflective (e.g., un-coated) surfaces. The mirror device may be formed using known approaches, such as through the deposition of a metallic material on to a surface of the mirror device followed by one or more optional coating layers. Before, or after, forming the highly-reflective surface, a visual indicator may be introduced on to a surface of the mirror device that is opposite the highly-reflective surface. The visual indicator may comprise, for example, random scratches/scoring etched from a wire brush or tool, paint, epoxy, ink, or any other indicator that allows a technician to visually differentiate the portion of the mirror device having the visual indicator from the highly-reflective portion.

公开(公告)号：US10044445B2

公开(公告)日：2018-08-07

申请号：US15252743

申请日：2016-08-31

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Chong Wang ,  YongXuan Liang

IPC: H04B10/00 ,  H04B10/572 ,  G02B6/42 ,  H04B10/50 ,  H04J14/02 ,  G02B6/293 ,  H01S5/12

Abstract: Techniques are disclosed for providing relatively short distances between multi-channel transmitter optical subassemblies (TOSAs) and associated transmit connecting circuit in order to reduce losses due to signal propagation delays, also sometimes referred to as signal flight time delays. In an embodiment, a TOSA includes a plurality of laser assemblies disposed along a same sidewall of the TOSA along a longitudinal axis. The TOSA may be disposed within an optical transceiver housing in a transverse orientation, whereby a longitudinal center line of the multi-channel TOSA is substantially perpendicular to the longitudinal axis of the optical transceiver housing. The TOSA may be positioned adjacent an end of the optical transceiver housing having a transmit connecting circuit. Thus each of the plurality of laser assemblies may be positioned at a relatively short distance, e.g., 120 microns or less, away from the transmit connecting circuit.

公开(公告)号：US09915560B2

公开(公告)日：2018-03-13

申请号：US14838017

申请日：2015-08-27

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Kai-Sheng Lin ,  Jun Zheng

IPC: G01J1/02 ,  G02B6/42 ,  G02B6/43 ,  G02B6/293 ,  G01J1/04

CPC classification number: G01J1/0271 ,  G01J1/029 ,  G01J1/0403 ,  G02B6/29365 ,  G02B6/2938 ,  G02B6/4214 ,  G02B6/4246 ,  G02B6/4263 ,  G02B6/4284 ,  G02B6/4292 ,  G02B6/4295 ,  G02B6/43

Abstract: A multi-channel receiver optical subassembly (ROSA) including at least one sidewall receptacle configured to receive and electrically isolate an adjacent multi-channel transmitter optical subassembly (TOSA) is disclosed. The multi-channel ROSA includes a housing with at least first and second sidewalls, with the first sidewall being opposite the second sidewall and including at least one sidewall opening configured to fixedly attach to photodiode assemblies. The second sidewall includes at least one sidewall receptacle configured to receive at least a portion of an optical component package, such as a transistor outline (TO) can laser package, of an adjacent multi-channel TOSA, and provide electrical isolation between the ROSA housing and the TOSA within an optical transceiver. The sidewall receptacle can include non-conductive material in regions that directly or otherwise come into close proximity with the optical component package of the adjacent TOSA.

公开(公告)号：US20160284874A1

公开(公告)日：2016-09-29

申请号：US14665639

申请日：2015-03-23

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Chong Wang ,  Luohan Peng

IPC: H01L31/0203 ,  H04B10/40 ,  H04J14/02 ,  H04B10/60

CPC classification number: H01L31/0203 ,  G02B6/00 ,  H01L2224/48091 ,  H04B10/40 ,  H01L2924/00014

Abstract: A multi-channel receiver optical subassembly (ROSA) such as an arrayed waveguide grating (AWG), with outputs directly optically coupled to respective photodetectors such as photodiodes. In one embodiment, the photodetectors are mounted on a photodetector mounting bar that includes a multiple conductive photodetector pads (PD pads). Each of the PD pads may be configured to receive a photodetector, and the PD pads are electrically isolated from ground such that the photodetectors are floating. The photodetector bar further includes multiple conductive transimpedance amplifier pads (TIA pads). Each of the TIA pads may be configured to receive a TIA, associated with one of the photodetectors, and to be electrically coupled to one or more ground ports of the TIA. The TIA pads are electrically connected to a common ground shared be each of said TIAs.

Abstract translation: 诸如阵列波导光栅（AWG）的多通道接收机光学子组件（ROSA），其具有直接光耦合到诸如光电二极管的各个光电探测器的输出。 在一个实施例中，光电检测器安装在包括多个导电光电检测器焊盘（PD焊盘）的光电检测器安装杆上。 每个PD焊盘可以被配置为接收光电检测器，并且PD焊盘与地电隔离，使得光电探测器浮动。 光电检测器条还包括多个导电跨阻放大器焊盘（TIA焊盘）。 TIA焊盘中的每一个可以被配置为接收与一个光电检测器相关联的TIA，并且电连接到TIA的一个或多个接地端口。 TIA焊盘电连接到共用的共用地址，分别为每个所述的TIA。

公开(公告)号：US09455782B2

公开(公告)日：2016-09-27

申请号：US14456124

申请日：2014-08-11

Applicant: Applied Optoelectronics, Inc.

Inventor： Jun Zheng ,  Yi Wang ,  I-Lung Ho ,  Klaus Alexander Anselm ,  Huanlin Zhang

IPC: H04B10/04 ,  H04B10/079 ,  H01S5/40 ,  H01S5/0683 ,  H04J14/02 ,  H04B10/40 ,  H04B10/50

CPC classification number: H04B10/07955 ,  H01S5/0268 ,  H01S5/0683 ,  H01S5/0687 ,  H01S5/4025 ,  H01S5/4087 ,  H04B10/40 ,  H04B10/503 ,  H04B10/506 ,  H04B10/572 ,  H04J14/02 ,  H04J14/0282

Abstract: Individual channels of a multiplexed laser array in a multi-channel optical transmitter are monitored at an output of an optical multiplexer. The monitoring may be used to confirm proper operation of each of the channels in the multiplexed laser array and/or to perform wavelength locking on each of the channels. Monitoring at the output of the optical multiplexer avoids the use of multiple photodetectors coupled directly to multiple lasers in the multiplexed laser array. The multiplexed laser array generally includes a plurality of laser emitters optically coupled to an optical multiplexer such as an arrayed waveguide grating (AWG). An optical transmitter with a monitored multiplexed laser array may be used, for example, in an optical line terminal (OLT) in a wavelength division multiplexed (WDM) passive optical network (PON) or in any other type of WDM optical communication system capable of transmitting optical signals on multiple channel wavelengths.

Abstract translation: 在多路复用器的输出端监视多通道光发射机中多路复用激光阵列的各个通道。 监视可用于确认多路复用激光器阵列中每个通道的正确操作和/或在每个通道上执行波长锁定。 在光学复用器的输出处的监控避免了使用多个激光器阵列中直接耦合到多个激光器的光电探测器。 复用的激光器阵列通常包括光学耦合到诸如阵列波导光栅（AWG）的光复用器的多个激光发射器。 具有受监控的多路复用激光器阵列的光发射机可以用于例如在波分多路复用（WDM）无源光网络（PON）中的光线路终端（OLT）中，或者可以使用任何其他类型的WDM光通信系统， 在多个信道波长上传输光信号。

公开(公告)号：US09432122B2

公开(公告)日：2016-08-30

申请号：US14188768

申请日：2014-02-25

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Jun Zheng ,  Hung-Lun Chang

IPC: H04B10/08 ,  H04B10/50 ,  H04B10/079 ,  H04J14/02

CPC classification number: H04B10/503 ,  H04B10/079 ,  H04B10/40 ,  H04B10/572 ,  H04J14/0256 ,  H04J14/0282 ,  Y10T29/49002

Abstract: A bidirectional optical subassembly (BOSA) optical networking unit (ONU) generally includes a BOSA housing. A tunable laser is located in the BOSA housing and is configured to generate a first optical signal for transmission at a first selected wavelength based on temperature control. The tunable laser is a distributed feedback (DFB) laser diode. A thermal management device is also located in the BOSA housing and is configured to provide the temperature control. A photo diode is further located in the BOSA housing and is configured to receive a second optical signal at a second selected wavelength. The BOSA housing comprises an alloy of stainless steel or an alloy of Kovar.

Abstract translation: 双向光学子组件（BOSA）光网络单元（ONU）通常包括BOSA外壳。 可调激光器位于BOSA壳体中，并且被配置为基于温度控制产生用于以第一选定波长传输的第一光信号。 可调激光器是分布式反馈（DFB）激光二极管。 BASA外壳中还设有热管理装置，并配置为提供温度控制。 光电二极管还位于BOSA壳体中，并且被配置为在第二选定波长处接收第二光信号。 BOSA外壳包括不锈钢或Kovar合金的合金。

公开(公告)号：US09236945B2

公开(公告)日：2016-01-12

申请号：US13760533

申请日：2013-02-06

Applicant: Applied Optoelectronics, Inc.

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

IPC: G02B6/36 ,  H04B10/40 ,  H04B10/50 ,  H04J14/02

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：US10811839B1

公开(公告)日：2020-10-20

申请号：US16387805

申请日：2019-04-18

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Chong Wang ,  Shih-Chia Liu

IPC: G02B6/12 ,  H01S5/022 ,  H01S5/026 ,  H04B10/50 ,  H04B10/40

Abstract: The present disclosure is generally directed to a TO can laser package that includes an off-center focus lens integrated into a lens cap to compensate displacement of an associated laser diode. The TO can laser package includes a TO header with a mounting structure for directly electrically coupling an associated laser diode to electrical leads/pins without the use of an intermediate interconnect. The mounting structure displaces the laser diode such that an emission surface, and more particularly, an origin thereof, is displaced/offset relative to a center of the TO header. The integrated lens cap includes a focus lens with an optical center that is offset from a center of the TO header at a distance that is substantially equal to the displacement of the laser diode. Thus, the displacement of the laser diode is compensated for by the off-center focus lens to minimize or otherwise reduce optical misalignment.