公开(公告)号：US10247892B2

公开(公告)日：2019-04-02

申请号：US15242017

申请日：2016-08-19

Applicant: Applied Optoelectronics, Inc.

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

IPC: G02B6/255 ,  G02B6/42

Abstract: A transceiver module having a partitioned housing, e.g., a bifurcated or multi-segment housing, is disclosed that allows coupling and alignment of a TOSA arrangement and ROSA arrangement in separate respective portions in order to minimize or otherwise reduce component damage and rework iterations during manufacturing and repair. Technicians may thus perform at least partial assembly and testing of each optical subassembly arrangement in parallel and in relative isolation without necessarily interrupting and/or waiting on completion of the other. In a general sense, each separate portion of the partitioned housing provides a dedicated workspace of about equal dimension for coupling of subassembly components. Each separate portion may lie flat on a tabletop, for instance, which may further simplify manufacturing processes and provide a wide-range of acceptance angles for performing soldering, welding, insertion and coupling of components, visual inspection, fiber routing, and so on.

公开(公告)号：US10180545B2

公开(公告)日：2019-01-15

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 ,  H04B10/40 ,  H04B10/50 ,  H04B10/079

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：US20180331494A1

公开(公告)日：2018-11-15

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: H01S5/022 ,  H01S5/042 ,  H01S5/024 ,  H04B10/50

CPC classification number: H01S5/02252 ,  H01S5/02208 ,  H01S5/02236 ,  H01S5/02276 ,  H01S5/02284 ,  H01S5/02469 ,  H01S5/02492 ,  H04B10/503

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：US20180331493A1

公开(公告)日：2018-11-15

申请号：US15591166

申请日：2017-05-10

Applicant: Applied Optoelectronics, Inc.

Inventor： Kai-Sheng LIN ,  Justin LII ,  Ziliang CAI

IPC: H01S5/022 ,  G02B6/42 ,  G02B6/38

CPC classification number: H01S5/02248 ,  G02B6/3885 ,  G02B6/3893 ,  G02B6/4246 ,  G02B6/4295 ,  H01S5/0224 ,  H01S5/02288 ,  H01S5/02292 ,  H04B10/50 ,  H04B10/60

Abstract: A light engine is disclosed that includes an optical bench with a mirror etched therefrom to form a single, unitary structure. The integrated mirror may therefore be pre-aligned with an associated light path to reduce light path alignment errors. In an embodiment, the optical bench includes a first end extending to a second end along a longitudinal axis, a laser diode disposed on a mounting surface adjacent the first end of the optical bench and configured to output laser light along a first light path that extends substantially along the longitudinal axis, and an integrated mirror device disposed along the light path to receive and direct the laser light along a second light path to optically couple the laser light to a photonically-enabled complementary metal-oxide semiconductor (CMOS) die, the second light path being substantially orthogonal relative to the first light path.

公开(公告)号：US10044441B2

公开(公告)日：2018-08-07

申请号：US15295189

申请日：2016-10-17

Applicant: Applied Optoelectronics, Inc.

Inventor： Michael Jones ,  Rafael Celedon

IPC: H04B10/2575 ,  H04B10/564 ,  H04B17/00

Abstract: Energy reduction in a CATV network device, such as an optical node, in a CATV network may be accomplished using a system and method for controlling an amplifier in response to channel loading. The system and method detects a channel loading condition for a CATV RF signal including a plurality of utilized channels across a channel spectrum defining a plurality of potential channels. The channel loading condition may be detected by scanning the CATV RF signal to measure the channel loading or by obtaining channel loading data from a remote PHY device (RPD) located in the optical node. The system and method then obtains an amplifier operating parameter associated with the channel loading condition and applies the amplifier operating parameter to control power consumption of an amplifier in the optical node (e.g., by changing bias current) in response to the channel loading condition.

公开(公告)号：US10020636B2

公开(公告)日：2018-07-10

申请号：US14551353

申请日：2014-11-24

Applicant: Applied Optoelectronics, Inc.

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

IPC: H04B10/50 ,  H01S5/06 ,  H04B10/27 ,  H04J14/02 ,  H01S5/12 ,  H01S5/0625 ,  H01S5/024 ,  H01S5/10 ,  H01S5/40

CPC classification number: H01S5/1209 ,  H01S5/02415 ,  H01S5/0612 ,  H01S5/06258 ,  H01S5/1092 ,  H01S5/4087

Abstract: A tunable laser with multiple in-line sections including sampled gratings generally includes a semiconductor laser body with a plurality of in-line laser sections configured to be driven independently to generate laser light at a wavelength within a different respective wavelength range. Sampled gratings in the respective in-line sections have the same grating period and a different sampling period to produce the different wavelengths. The wavelength of the light generated in the respective laser sections may be tuned, in response to a temperature change, to a channel wavelength within the respective wavelength range. By selectively generating light in one or more of the laser sections, one or more channel wavelengths may be selected for lasing and transmission. By using sampled gratings with the same grating period in the multiple in-line sections, the multiple section tunable laser may be fabricated more easily.

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.