公开(公告)号：US20170307819A1

公开(公告)日：2017-10-26

申请号：US15137823

申请日：2016-04-25

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung HO ,  Zhengyu MIAO ,  Qin LI

IPC: G02B6/12 ,  G02B6/42 ,  H04J14/02

CPC classification number: G02B6/12016 ,  G02B6/12011 ,  G02B6/12019 ,  G02B6/4246 ,  G02B6/4292 ,  H04B10/40 ,  H04J14/02 ,  H04J14/0256

Abstract: An arrayed waveguide grating (AWG) device for use in an optical transceiver is disclosed, and can de-multiplex an optical signal into N number of channel wavelengths. The AWG device can include an AWG chip, with the AWG chip providing a planar lightwave (PLC) circuit configured to de-multiplex channel wavelengths and launch the same into output waveguides. A region of the AWG chip may be tapered such that light traveling via the output waveguides encounters an angled surface of the tapered region and reflects towards an output interface region of the AWG chip. Thus detector devices may optically couple to the output interface region of the AWG chip directly, and can avoid losses introduced by other approaches which couple an output of an AWG to detectors by way of a fiber array or other intermediate device.

公开(公告)号：US20170269315A1

公开(公告)日：2017-09-21

申请号：US15073322

申请日：2016-03-17

Applicant: Applied Optoelectronics, Inc.

Inventor： Che-Shou YEH ,  Jianhong LUO ,  Li-Chieh SU ,  Weihao SUN ,  Hua LIU

IPC: G02B6/42 ,  G02B6/12 ,  G02B6/293 ,  G02B6/38

CPC classification number: G02B6/4292 ,  G02B6/12019 ,  G02B6/2938 ,  G02B6/3877 ,  G02B6/4208 ,  G02B6/421 ,  G02B6/4263 ,  G02B6/4274

Abstract: A coaxial transmitter optical subassembly (TOSA) including an optical fiber coupling receptacle coupled to a laser package may be used in an optical transceiver for transmitting an optical signal at a channel wavelength. The optical fiber coupling receptacle may include a housing having a first open end to receive a ferrule-terminated optical fiber. The receptacle may also include a fiber-coupling ferrule holding an optical fiber segment and secured within the housing to optically couple the optical fiber segment to a laser of the TOSA through a second open end of the housing opposite the first open end. The receptacle may further include a sleeve disposed on an interior surface of the housing to provide a cavity to secure the ferrule-terminated optical fiber and align the optical fiber to the optical fiber segment.

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：US20170059786A1

公开(公告)日：2017-03-02

申请号：US15241979

申请日：2016-08-19

Applicant: Applied Optoelectronics, Inc.

Inventor： Kai-Sheng LIN ,  Justin LII ,  Hao-Hsiang LIAO

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

Abstract: The present disclosure is directed to a keyed optical component assembly that ensures that the same has a proper orientation when press-fit into or otherwise coupled to a complimentary opening of an optical subassembly housing. In an embodiment, the keyed optical component assembly includes a base portion defined by a first end and a second end disposed opposite the first end along a longitudinal axis. A first arcuate region extends from the first end towards the second end and transitions into a tapered region. A second arcuate region extends from the second end towards the first end and also transitions into the tapered region. Therefore, the tapered region extends between the first arcuate region and the second arcuate region, and generally tapers/narrows from the second arcuate region to the first arcuate region. The resulting shape of the base portion may generally be described as an asymmetric tear-drop shape.

Abstract translation: 本公开涉及一种键控的光学部件组件，其确保当压配合或耦合到光学子组件壳体的互补开口时，该组件组件具有适当的取向。 在一个实施例中，键控的光学部件组件包括由第一端和沿着纵向轴线与第一端相对设置的第二端限定的基部。 第一弧形区域从第一端部延伸到第二端部并且转变成锥形区域。 第二弧形区域从第二端朝向第一端部延伸并且也转变成锥形区域。 因此，锥形区域在第一弧形区域和第二弧形区域之间延伸，并且通常从第二弧形区域到第一弧形区域逐渐变窄/变窄。 所形成的基部形状通常可以被描述为不对称的泪滴形状。

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：US09509433B2

公开(公告)日：2016-11-29

申请号：US14088883

申请日：2013-11-25

Applicant: Applied Optoelectronics, Inc.

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

IPC: G02B6/00 ,  H04J14/02 ,  H04B10/25 ,  H04B10/60 ,  H04Q11/00

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）的多通道接收器光学子组件（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：US20160197678A1

公开(公告)日：2016-07-07

申请号：US14590456

申请日：2015-01-06

Applicant: Applied Optoelectronics, Inc.

Inventor： Jun Zheng ,  Stefan Murry ,  Klaus Alexander Anselm ,  Huanlin Zhang ,  Dion McIntosh-Dorsey

IPC: H04B10/50 ,  H01S5/062

CPC classification number: H01S5/06256 ,  H01S5/02415 ,  H01S5/06226

Abstract: A two-section semiconductor laser includes a gain section and a modulation-independent grating section to reduce chirp. The modulation-independent grating section includes a diffraction grating for reflecting light and forms a laser cavity with the gain section for lasing at a wavelength or range of wavelengths reflected by the diffraction grating. The gain section of the semiconductor laser includes a gain electrode for driving the gain section with at least a modulated RF signal and the grating section includes a grating electrode for driving the grating section with a DC bias current independent of the modulation of the gain section. The semiconductor laser may thus be directly modulated with the modulated RF signal without the modulation significantly affecting the index of refraction in the diffraction grating, thereby reducing chirp.

Abstract translation: 两部分半导体激光器包括增益部分和调制无关光栅部分，以减少啁啾。 调制非依赖光栅部分包括用于反射光的衍射光栅，并且在激光的增益部分处形成激光腔，该增益部分在由衍射光栅反射的波长或波长范围内进行激光。 半导体激光器的增益部分包括用于以至少调制的RF信号驱动增益部分的增益电极，并且光栅部分包括用于以独立于增益部分的调制的DC偏置电流来驱动光栅部分的光栅电极。 因此，半导体激光器可以用调制的RF信号直接调制，而不会使调制显着影响衍射光栅中的折射率，从而减少啁啾。

公开(公告)号：US09225428B1

公开(公告)日：2015-12-29

申请号：US14465240

申请日：2014-08-21

Applicant: Applied Optoelectronics, Inc.

Inventor： Luohan Peng ,  Zhengyu Miao ,  Hao-Hsiang Liao

IPC: H04J14/02 ,  H04B10/60 ,  H04B10/25 ,  H04Q11/00

CPC classification number: H04Q11/0005 ,  G02B6/4225 ,  G02B6/4256

Abstract: A system is provided for aligning a photodetector array to optical outputs of an optical demultiplexer in a multi-channel receiver optical subassembly (ROSA). In one embodiment, the system may include a clamp alignment fixture configured to secure a position of a photodetector mounting bar within a ROSA housing, wherein the photodetector array is disposed on the photodetector mounting bar and the photodetector array includes a plurality of photodiodes. The system may further include a motion staging device configured to adjust an orientation of the photodetector mounting bar by varying an angle of the clamp alignment fixture. The adjustment may be based on observation of the location of an optical alignment signal relative to the plurality of photodiodes, the optical alignment signal projected onto the photodetector mounting bar by the optical demultiplexer.

Abstract translation: 提供了一种用于将光电检测器阵列与多通道接收机光学子组件（ROSA）中的光解复用器的光输出对准的系统。 在一个实施例中，系统可以包括夹具对准夹具，其被配置为将光电检测器安装杆的位置固定在ROSA壳体内，其中光电检测器阵列设置在光电检测器安装杆上，并且光电检测器阵列包括多个光电二极管。 该系统还可以包括运动分段装置，其配置成通过改变夹具对准夹具的角度来调整光电检测器安装杆的取向。 调整可以基于相对于多个光电二极管的光学对准信号的位置的观察，光学对准信号由光学解复用器投射到光电检测器安装杆上。

公开(公告)号：US20150372763A1

公开(公告)日：2015-12-24

申请号：US14312930

申请日：2014-06-24

Applicant: Applied Optoelectronics, Inc.

Inventor： Yi Wang ,  Huanlin Zhang

IPC: H04B10/58 ,  H04B10/40 ,  H04J14/02 ,  H04B10/50

CPC classification number: H04B10/58 ,  H04B10/40 ,  H04B10/504

Abstract: An optical transceiver generally includes an injection locked (IL) laser configured to generate a transmit (Tx) optical signal for transmission over an optical network and a laser driver circuit configured to modulate the IL laser based on a Tx data signal. The Tx data signal may be provided to the optical transceiver for transmission over the optical network. The Tx data signal may include a crossing point level associated with a transition between a first signal level and a second signal level. The optical transceiver may also include a crossing point control circuit configured to apply distortion to the Tx data signal, the distortion to increase the crossing point level.

Abstract translation: 光收发器通常包括被配置为产生用于通过光网络传输的发射（Tx）光信号的注入锁定（IL）激光器和被配置为基于Tx数据信号来调制IL激光器的激光器驱动器电路。 Tx数据信号可以被提供给光收发器以在光网络上传输。 Tx数据信号可以包括与第一信号电平和第二信号电平之间的转变相关联的交叉点电平。 光收发器还可以包括交叉点控制电路，其被配置为向Tx数据信号施加失真，该失真增加了交叉点电平。