公开(公告)号：US20200073052A1

公开(公告)日：2020-03-05

申请号：US16116087

申请日：2018-08-29

Applicant: Applied Optoelectronics, Inc.

Inventor： Kai-Sheng LIN ,  Kevin LIU ,  I-Lung HO

IPC: G02B6/12 ,  G02B6/42 ,  H04J14/02 ,  H04B10/40 ,  H04B10/50

Abstract: In general, a TOSA consistent with the present disclosure includes a light driving circuit coupled to a hermetically-sealed light engine. The hermetically-sealed light engine includes a housing defined by a plurality of sidewalls. The housing defines a cavity that is hermetically-sealed to prevent introduction of contaminants that would otherwise reduce optical power. The hermetically-sealed light engine optically couples to an external arrayed waveguide grating (AWG), or other multiplexing device, by way of an optical receptacle. The optical receptacle can include a waveguide implemented external to the hermetically-sealed cavity and can include, for instance, an optical isolator, fiber stub, and fiber ferrule section. Thus, the external AWG and associated external optical coupling components advantageously allow for the hermetically-sealed light engine to have a cavity with dimensions relatively smaller than other approaches that dispose an AWG and associated components within a hermetically-sealed cavity.

公开(公告)号：US10418782B2

公开(公告)日：2019-09-17

申请号：US15640978

申请日：2017-07-03

Applicant: Applied Optoelectronics, Inc.

Inventor： Jun Zheng ,  Stefan J. Murry ,  Bujin Guo

IPC: H04J14/02 ,  H01S5/14 ,  H04B10/50 ,  H01S3/08 ,  H01S3/105 ,  H01S3/106 ,  H01S5/022

Abstract: A wavelength-selectable laser device providing spatially-selectable wavelength(s) may be used to select one or more wavelengths for lasing in a tunable transmitter or transceiver, for example, in a wavelength division multiplexed (WDM) optical system such as a WDM passive optical network (PON). The wavelength-selectable laser device uses a dispersive optical element, such as a diffraction grating, to disperse light emitted from a laser emitter and to direct different wavelengths of the light toward a reflector at different spatial positions such that the wavelengths may be selected by allowing light to be reflected from selected spatial position(s) back into the laser emitter. Thus, the reflected light with a wavelength at the selected spatial position(s) is allowed to complete the laser cavity.

公开(公告)号：US10313024B1

公开(公告)日：2019-06-04

申请号：US15963246

申请日：2018-04-26

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Kevin Liu ,  YongXuan Liang

IPC: H04J14/02 ,  H04B10/00 ,  H04B10/80 ,  H01S5/022 ,  H01S5/024 ,  H01S5/40 ,  H04B10/50 ,  H01S5/042

Abstract: The present disclosure is generally directed to a transmitter optical subassembly (TOSA) having a hermetically-sealed housing with a feedthrough device that electrically isolates RF and power traces. In more detail, a TOSA consistent with the present disclosure includes a substrate with driving circuitry disposed thereon. A first end of the substrate may electrically couple to transmit connecting circuitry and a second end may couple to a hermetically-sealed housing. The hermetically-sealed housing can include one or more laser packages for emitting associated channel wavelengths in addition to monitor photodiodes (PDs), and temperature control devices such as TECs. The hermetic-sealed housing includes a first end with a feedthrough device that provides traces to electrically couple to the circuitry of the substrate. The hermetic-sealed housing further includes an optical coupling port, e.g., a LC connector, for coupling to an external fiber, for example.

公开(公告)号：US10295765B2

公开(公告)日：2019-05-21

申请号：US15413514

申请日：2017-01-24

Applicant: Applied Optoelectronics, Inc.

Inventor： Kai-Sheng Lin ,  YongXuan Liang ,  Justin Lii

IPC: G02B6/42 ,  H04B10/40 ,  H04B10/60 ,  H04B10/66 ,  H04B10/69

Abstract: A photodiode package is disclosed that includes a TO-Can style body with an exposed sensor cavity that eliminates the necessity of an encapsulant dispensing process. The TO-Can body of the photodiode package includes an integrated coupling member to allow for coupling to a ROSA housing without an intermediate member. The photodiode package includes a base portion with a cylindrical wall portion that extends therefrom to form an optical coupling cavity. A surface of the base portion provides at least one mounting surface within the optical coupling cavity for coupling to a photodiode chip. The cylindrical wall may function as an integrated coupling member and may be used to directly couple the photodiode package, e.g., without an intermediate cap/ring, into a socket of a ROSA housing. The base portion and cylindrical wall may be formed from a single piece of material, or from multiple pieces depending on a desired configuration.

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.