公开(公告)号：US09964720B2

公开(公告)日：2018-05-08

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 ,  H04B10/50 ,  H04B10/572 ,  H01S5/024 ,  H01S5/068 ,  G02B6/12 ,  G02B6/293 ,  H01S5/00 ,  H01S5/12 ,  H01S5/022 ,  H01S5/06 ,  H01S5/40

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).

公开(公告)号：US20180092199A1

公开(公告)日：2018-03-29

申请号：US15275785

申请日：2016-09-26

Applicant: Applied Optoelectronics, Inc.

Inventor： Rafael CELEDON ,  Mark SIEJKA ,  Michael JONES

IPC: H05K1/02 ,  H05K1/18 ,  G02B6/42

CPC classification number: H05K1/0204 ,  G02B6/4272 ,  G02B6/428 ,  G02B6/4292 ,  H05K1/18 ,  H05K3/0061 ,  H05K2201/10121 ,  H05K2201/10416

Abstract: A heat transfer assembly may be used to provide a thermal conduit from a module mounted on a circuit board through the circuit board, allowing a thermal path away from the module. The heat transfer assembly generally includes a thermally conductive base with at least one raised thermal pedestal accessible through at least one heat transfer aperture in the circuit board and in thermal contact with the module. In an embodiment, the heat transfer assembly is used in a remote PHY device (RPD) in an optical node, for example, in a CATV/HFC network. The RPD includes an enclosure having a base with at least one raised thermal pedestal in thermal contact with an optical module (e.g., an optical transmitter or transceiver) on a circuit board through at least one heat transfer aperture in the circuit board.

公开(公告)号：US09817196B2

公开(公告)日：2017-11-14

申请号：US14974492

申请日：2015-12-18

Applicant: Applied Optoelectronics, Inc.

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

IPC: G02B6/42 ,  H04B10/40 ,  H04B10/60

CPC classification number: G02B6/4215 ,  G02B6/4214 ,  G02B6/4263 ,  H04B10/40 ,  H04B10/60

Abstract: An optical sub-assembly cartridge for use in a multi-channel receiver optical sub-assembly (ROSA) is disclosed and includes pre-aligned demultiplexing optics. The optical sub-assembly cartridge may include a plurality of sidewalls which define a cartridge body and at least partially enclose a cavity therein. A sidewall of the cartridge body may include a sidewall opening configured to allow light to enter the cavity. A first optical filter disposed opposite the sidewall opening may receive light entering the cavity and be configured to pass unassociated channel wavelengths out of the cavity while reflecting associated channel wavelengths to a mirror disposed in the cavity. The mirror may then reflect the received channel wavelengths to a second optical filter within or external to the cavity. The second optical filter may emit a narrow spectrum of channel wavelengths to a photodiode package to convert the same to a proportional electrical signal.

公开(公告)号：US20170272169A1

公开(公告)日：2017-09-21

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 ,  G02B6/293 ,  G02B6/42 ,  G02B6/27 ,  H04B10/50 ,  G02B6/43

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：US20170269313A1

公开(公告)日：2017-09-21

申请号：US15073309

申请日：2016-03-17

Applicant: Applied Optoelectronics, Inc.

Inventor： Jianhong LUO ,  Che-Shou YEH ,  I-Lung HO ,  Peng NIE

IPC: G02B6/42 ,  G02B6/32

CPC classification number: G02B6/4244 ,  G02B6/32 ,  G02B6/4204 ,  G02B6/4246 ,  G02B6/4263 ,  G02B6/4271 ,  G02B6/4274 ,  G02B6/4286

Abstract: A coaxial transmitter optical subassembly (TOSA) including a ball lens may be used in an optical transceiver for transmitting an optical signal at a channel wavelength. The coaxial TOSA includes a laser package with a ball lens holder section defining a lens holder cavity that receives the ball lens. The lens holder cavity is dimensioned such that the ball lens is positioned in substantial alignment with the laser diode for optically coupling a laser output from the laser diode into an optical waveguide at an optical coupling end of the TOSA. The coaxial TOSA is thus configured to allow the less expensive ball lens to be used in a relatively small package when a lower coupling efficiency and power is desired and without substantial redesign of the TOSA.

公开(公告)号：US20170269311A1

公开(公告)日：2017-09-21

申请号：US15073342

申请日：2016-03-17

Applicant: Applied Optoelectronics, Inc.

Inventor： Chong WANG ,  Che-shou YEH ,  Jianhong LUO ,  Haohui MAO ,  I-Lung HO

IPC: G02B6/42 ,  G02B6/32 ,  H04J14/02 ,  H04B10/079 ,  H04B10/40 ,  H04B10/50

CPC classification number: G02B6/4208 ,  G02B6/32 ,  G02B6/4204 ,  G02B6/4246 ,  G02B6/4263 ,  G02B6/4286 ,  H04B10/0795 ,  H04B10/40 ,  H04B10/503 ,  H04J14/02

Abstract: A coaxial transmitter optical subassembly (TOSA) with optical isolator alignment correction may be used in an optical transceiver for transmitting an optical signal at a channel wavelength. The coaxial TOSA includes an optical fiber coupling receptacle extending from a laser package. The laser package may include a laser diode and a lens to focus laser light emitted from the laser diode onto an optical fiber. The laser diode and lens are aligned along a first longitudinal axis of the laser package parallel to a transmission path of the laser light. An optical isolator located in the transmission path is aligned along a second longitudinal axis of the laser package. The second longitudinal axis is coincident with a centerline of the laser package, and the first longitudinal axis is offset from the second longitudinal axis by a predetermined offset distance to compensate for light shifting characteristics of the isolator.

公开(公告)号：US09762028B2

公开(公告)日：2017-09-12

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: H01S5/0625 ,  H01S5/062 ,  H01S5/024

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.

公开(公告)号：US09614620B2

公开(公告)日：2017-04-04

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

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.

公开(公告)号：US20170075080A1

公开(公告)日：2017-03-16

申请号：US15362796

申请日：2016-11-28

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung HO ,  Luohan PENG ,  Joyce LI

IPC: G02B6/42 ,  H04J14/02 ,  G02B6/12 ,  H04B10/66

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：US20170040774A1

公开(公告)日：2017-02-09

申请号：US15333557

申请日：2016-10-25

Applicant: Applied Optoelectronics, Inc.

Inventor： Jun ZHENG ,  Stefan J. MURRY

IPC: H01S5/14 ,  H01S5/125 ,  H04B10/572 ,  H04B10/25 ,  H04J14/02 ,  H04B10/50

CPC classification number: H01S5/146 ,  H01S5/125 ,  H04B10/25 ,  H04B10/503 ,  H04B10/506 ,  H04B10/572 ,  H04J14/02 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

Abstract: An extended cavity Fabry-Perot laser assembly provides relatively narrow mode spacing while allowing relatively high speed optical modulation. The extended cavity Fabry-Perot laser assembly generally includes an exit reflector physically separated from a laser emitter (e.g., a gain chip) to extend the lasing cavity and narrow the mode spacing while maintaining a relatively small gain region in the laser emitter capable of higher speed optical modulation. The extended cavity Fabry-Perot laser assembly may be used in a multi-channel transmitter in a wavelength division multiplexed (WDM) optical system that selects a channel wavelength for the transmitter from among multiple channel wavelengths emitted by the laser assembly. The narrow mode spacing may be less than a WDM channel width, and more specifically, may be less than a channel passband of an arrayed waveguide grating (AWG) or other filter used to select the channel wavelength.

Abstract translation: 扩展腔法布里 - 珀罗激光器组件提供相对窄的模式间隔，同时允许相对高速的光学调制。 扩展腔法布里 - 珀罗激光器组件通常包括与激光发射器（例如，增益芯片）物理分离的出射反射器，以延伸激光腔并且缩小模式间隔，同时保持激光发射器中能够较高的相对小的增益区域 速度光调制。 扩展腔法布里 - 珀罗激光器组件可以用在波分复用（WDM）光学系统中的多通道发射机中，该系统从由激光组件发射的多个信道波长中选择用于发射机的信道波长。 窄模式间隔可以小于WDM沟道宽度，更具体地，可以小于用于选择沟道波长的阵列波导光栅（AWG）或其他滤波器的通道通带。