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.

公开(公告)号：US10230471B2

公开(公告)日：2019-03-12

申请号：US15576635

申请日：2016-05-23

Applicant: Applied Optoelectronics, Inc.

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

IPC: G02B6/42 ,  H04B10/40 ,  G02B6/43 ,  H04B10/50 ,  H04J14/02

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.

公开(公告)号：US09847434B2

公开(公告)日：2017-12-19

申请号：US14665639

申请日：2015-03-23

Applicant: Applied Optoelectronics, Inc.

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

IPC: H04B10/69 ,  H01L31/0203 ,  H04B10/40 ,  G02B6/00

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.

公开(公告)号：US10418777B2

公开(公告)日：2019-09-17

申请号：US15591274

申请日：2017-05-10

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Qin Li ,  Chong Wang ,  Hao-Hsiang Liao

IPC: H04B10/00 ,  H01S5/022 ,  H01S5/024 ,  H04B10/50

Abstract: A coaxial transmitter optical subassembly (TOSA) including a side-by-side laser diode and monitor photodiode package, consistent with embodiments of the present disclosure, may be used in an optical transceiver for transmitting an optical signal at a channel wavelength. In an embodiment, the coaxial TOSA includes a laser sub-mount coupled to a mounting region defined by a body of the coaxial TOSA. The laser sub-mount includes a monitor photodiode disposed adjacent to a side of a laser diode such that a sensor region of the monitor photodiode is disposed within, or in close proximity to, a light cone emitted by a light emitting surface of the laser diode. The monitor photodiode is thus configured to directly receive a portion of emitted channel wavelengths from the laser diode for monitoring purposes.

公开(公告)号：US10073229B2

公开(公告)日：2018-09-11

申请号：US15334753

申请日：2016-10-26

Applicant: Applied Optoelectronics, Inc.

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

IPC: G02B6/42 ,  H04B10/40

CPC classification number: G02B6/4246 ,  G02B6/4237 ,  G02B6/4281 ,  G02B6/4292 ,  H04B10/40 ,  H04J14/0227

Abstract: In accordance with an embodiment, a transmitter optical subassembly (TOSA) module is disclosed with a base portion that provides one or more mounting surfaces to mount a laser diode and associated driver circuitry in close proximity to allow for direct coupling without the use of an intermediate interconnect device, such as a flexible printed circuit or other interconnect device. The TOSA module base further includes a cylindrical shaped portion with a passageway extending therethrough. The substantially cylindrical shaped portion allows the TOSA module base to mount to a multi-channel TOSA housing via a Z-ring or other suitable welding ring without the use of an intermediate device such as a welding cap.

公开(公告)号：US09876576B2

公开(公告)日：2018-01-23

申请号：US15073360

申请日：2016-03-17

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Chong Wang ,  Jianhong Luo ,  Che-Shou Yeh

IPC: H04B10/40 ,  H04B10/50 ,  G02B6/42 ,  G02B6/43 ,  G02B6/27 ,  G02B6/293

CPC classification number: H04B10/40 ,  G02B6/2746 ,  G02B6/2938 ,  G02B6/4215 ,  G02B6/4245 ,  G02B6/4246 ,  G02B6/4257 ,  G02B6/4263 ,  G02B6/4272 ,  G02B6/4284 ,  G02B6/43 ,  H04B10/503 ,  H04B10/506

Abstract: Layered coaxial transmitter optical subassemblies (TOSAs) with a support bridge therebetween may be used in an optical transmitter or transceiver for transmitting optical signals at multiple channel wavelengths. The coaxial TOSAs may include cuboid type TO laser packages having substantially flat outer surfaces that may be mounted on substantially flat outer surfaces on a transmitter or transceiver housing or on the support bridge. The support bridge supports and isolates one layer of the TOSAs mounted over another layer of the TOSAs such that the TOSAs may be stacked to fit within a small space without sacrificing optical coupling efficiency.

公开(公告)号：US09696503B2

公开(公告)日：2017-07-04

申请号：US14850367

申请日：2015-09-10

Applicant: Applied Optoelectronics, Inc.

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

IPC: H04B10/40 ,  G02B6/42 ,  G02B6/32 ,  H01S5/00

CPC classification number: G02B6/4209 ,  G02B6/32 ,  G02B6/4215 ,  G02B6/4228 ,  G02B6/4246 ,  G02B6/4263 ,  G02B6/4292 ,  H01S5/0078 ,  H04B10/40

Abstract: A multi-channel transmitter optical subassembly (TOSA) with an off-center fiber in an optical coupling is disclosed, and can provide passive compensation for beam displacement introduced by optical isolators. The optical coupling receptacle can include an optical isolator configured to receive a focused light beam from a focus lens within the TOSA. The optical coupling receptacle may be offset such that a center line of the focused light beam entering the optical isolator is offset from a center line of a fiber within optical coupling receptacle. Thus the optical isolator receives the focused light beam from the focus lens and introduces beam displacement such that an optical signal is launched generally along a center line of the fiber. Thus the expected beam displacement introduced by the optical isolator is eliminated or otherwise mitigated by the offset between a center line of the fiber and a center position of the focus lens.

公开(公告)号：US20160377822A1

公开(公告)日：2016-12-29

申请号：US14295459

申请日：2014-06-04

Applicant: Applied Optoelectronics, Inc.

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

IPC: G02B6/42 ,  H04J14/02 ,  G02B6/293 ,  H01S5/12 ,  H01S5/40 ,  H01S5/024 ,  H01S5/00 ,  H04B10/50 ,  G02B6/12

CPC classification number: G02B6/4271 ,  G02B6/12019 ,  G02B6/29329 ,  G02B6/2938 ,  G02B6/4292 ,  H01S5/0014 ,  H01S5/02216 ,  H01S5/02415 ,  H01S5/02453 ,  H01S5/0612 ,  H01S5/06804 ,  H01S5/12 ,  H01S5/4025 ,  H01S5/4087 ,  H04B10/503 ,  H04B10/506 ,  H04B10/572 ,  H04J14/02 ,  H04J14/0256

Abstract: The temperature at different locations along a multiplexed laser array may be monitored by sensing temperature at two locations within a transmitter optical subassembly (TOSA) package housing the laser array. The temperature at the two locations is used to determine a temperature tilt across the laser array. Estimated temperatures may then be determined at one or more other locations along the laser array from the temperature tilt. The estimated temperature(s) may then be used to adjust the temperature proximate the other locations, for example, for purposes of tuning lasers at those locations along the laser array to emit a desired channel wavelength. The TOSA package may be used in an optical transceiver 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: 可以通过感测在容纳激光器阵列的发射机光学子组件（TOSA）封装内的两个位置处的温度来监测复用激光器阵列处不同位置处的温度。 两个位置的温度用于确定激光器阵列上的温度倾斜。 然后可以在沿着激光器阵列的一个或多个其它位置从温度倾斜确定估计的温度。 然后可以使用估计的温度来调节靠近其它位置的温度，例如，为了在沿着激光器阵列的那些位置处调谐激光器以发射期望的通道波长。 TOSA封装可以用在波分复用（WDM）光学系统的光收发器中，例如在WDM无源光网络（PON）中的光线路终端（OLT）中。

公开(公告)号：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：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。