公开(公告)号：US20140341580A1

公开(公告)日：2014-11-20

申请号：US13893802

申请日：2013-05-14

Applicant: Applied Optoelectronics, Inc.

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

IPC: 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：US20140341578A1

公开(公告)日：2014-11-20

申请号：US14088883

申请日：2013-11-25

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Luohan Peng ,  Joyce Li

IPC: H04J14/02 ,  H04B10/60

CPC classification number: G02B6/4224 ,  G02B6/12019 ,  G02B6/4292 ,  G02B6/4295 ,  H04B10/66 ,  H04J14/0246 ,  H04J14/025

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, an AWG may be configured such that optical components of the AWG do not interfere with direct optical coupling, and the wire bonding points on the photodiodes may also be configured such that wire bonding does not interfere with direct optical coupling. The photodetectors may also be mounted on a photodetector mounting bar with a pitch sufficiently spaced to allow connection to floating grounds. A passive alignment technique may be used to determine the mounting locations on the photodetector mounting bar such that the photodetectors are aligned with the optical outputs.

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，AWG可以被配置成使得AWG的光学部件不干扰直接光耦合，并且光电二极管上的引线接合点也可以被配置成使得引线接合不会干扰直接的光耦合。 光电检测器还可以安装在具有足够间隔的间距的光电检测器安装杆上，以允许连接到浮动接地。 可以使用无源对准技术来确定光电检测器安装杆上的安装位置，使得光电检测器与光输出对准。

公开(公告)号：US10509184B2

公开(公告)日：2019-12-17

申请号：US15473563

申请日：2017-03-29

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Hsiu-Che Wang ,  Hao-Hsiang Liao

IPC: G02B6/42 ,  G02B6/12

Abstract: In accordance with an embodiment, a welding assembly is disclosed that allows for a laser assembly to be coupled into a socket of the same and held at a fixed position, e.g., by a mechanical grabber of a welding system. The mechanical grabber may then travel along one or more axis to bring the TOSA module into mechanical alignment with an opening of an associated optical subassembly housing. The welding assembly may further include an alignment member that provides one or more alignment contact surfaces configured to be brought directly into contact with a surface of the associated subassembly housing. When the one or more alignment contact surfaces are “flush” with the surface of the subassembly housing the emission face of the TOSA module is substantially parallel, and by extension, optically aligned with the opening of the associated subassembly housing.

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：US10295763B2

公开(公告)日：2019-05-21

申请号：US15613655

申请日：2017-06-05

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Luohan Peng ,  Kai-Sheng Lin ,  Elsie Marentes

IPC: G02B6/12 ,  G02B6/42 ,  G02B6/125 ,  G02B6/38 ,  H04B10/40

Abstract: Techniques for flexible coupling between an optical coupling receptacle/port of an optical transceiver housing and optical components within the same are disposed. In an embodiment, an optical transceiver housing includes an intermediate fiber with a first end optically coupled to an optical coupling port and a second end optically coupled to a multiplexer/de-multiplexer device, e.g., an arrayed waveguide grating (AWG) device, PLC splitter, and so on. The intermediate fiber may be routed in the transceiver housing in a manner that and the radius of the bends may be optimized to reduce fiber bending losses. The techniques herein are equally applicable to both ROSA and TOSA modules and may be utilized to achieve flexible coupling for multi-channel transceiver devices.

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：US09684141B1

公开(公告)日：2017-06-20

申请号：US15137794

申请日：2016-04-25

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Hao-Hsiang Liao ,  Justin Lii

IPC: G02B6/42

CPC classification number: G02B6/4244 ,  G02B6/4214 ,  G02B6/4215 ,  G02B6/4239 ,  G02B6/4253

Abstract: Techniques are disclosed for filling gaps formed between a press-fit component and an optical subassembly housing to introduce a seal or barrier that can prevent or otherwise mitigate the ingress of contaminants. In an embodiment, a layer of sealant material is applied to one or more surfaces of an optical component prior to press-fitting the component into an optical subassembly housing. Alternatively, or in addition to applying sealant to one or more surfaces of an optical component, a layer of sealant material may be disposed on an interface formed between an outer surface of the optical subassembly housing and the optical component press-fit into the same. Techniques disclosed herein are particularly well suited for small form-factor optical subassemblies that include one or more optical components press-fit into openings of a subassembly housing during manufacturing.

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。