公开(公告)号：US10608408B1

公开(公告)日：2020-03-31

申请号：US16202854

申请日：2018-11-28

Applicant: Applied Optoelectronics, Inc.

Inventor： Kai-Sheng Lin ,  Ziliang Cai ,  Chong Wang

IPC: H01S5/042 ,  G02B6/42 ,  H01S5/40 ,  H01S5/022

Abstract: The present disclosure is generally directed to a laser subassembly for use in a TOSA module that includes an integrated impedance matching network to enable a plurality of selectable resistance configurations to ensure the driving circuit and laser emitter of the TOSA module have matching, or substantially matching, impedances. The laser subassembly includes a substrate with a driving circuit disposed thereon. The driving circuit includes signal conductors for electrically coupling to an external transmit connecting circuit, a conductive laser mounting section, and an impedance matching network. The impedance matching network includes a plurality of resistors, with one or more of the resistors being selectively electrically coupled to the conductive laser mounting section to introduce a selected amount of impedance to minimize or otherwise reduce reflection.

公开(公告)号：US10230470B2

公开(公告)日：2019-03-12

申请号：US15475082

申请日：2017-03-30

Applicant: Applied Optoelectronics, Inc.

Inventor： Kai-Sheng Lin ,  Yi Wang ,  Kevin Liu

IPC: G02B6/42 ,  H04B10/40 ,  H05K1/18 ,  H05K1/02 ,  G02B6/12 ,  H05K1/11

Abstract: In accordance with an embodiment, a multi-layered flexible printed circuit (FPC) is disclosed that includes two or more insulating layers to route conductive traces carrying radio frequency (RF) signals, e.g., data signals, and conductive traces carrying direct current (DC) signals, e.g., power signals and low-frequency control signals, while sufficiently isolating the RF signals from electrical interference by the DC transmission lines. This advantageously eliminates having two or more separate FPCs to electrically couple each optical subassembly, e.g., receiver optical subassemblies (ROSAs) and transmitter optical subassemblies (TOSAs), to associated circuitry in a transceiver housing, which saves space and reduces manufacturing complexity, for example.

公开(公告)号：US10197751B2

公开(公告)日：2019-02-05

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: G02B6/32 ,  G02B6/42

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：US20180284369A1

公开(公告)日：2018-10-04

申请号：US15473557

申请日：2017-03-29

Applicant: Applied Optoelectronics, Inc.

Inventor： Kai-Sheng LIN ,  I-Lung HO ,  Hsiu-Che WANG

IPC: G02B6/42 ,  H04B10/60

CPC classification number: G02B6/4224 ,  G02B6/29364 ,  G02B6/4214 ,  G02B6/4215 ,  G02B6/4244 ,  G02B6/4246 ,  G02B6/4256 ,  G02B6/4292 ,  H04B10/60

Abstract: A mirror device for use in an optical subassembly is disclosed that includes at least one surface with a visible indicator to allow a technician to differentiate a highly-reflective surface from relatively less reflective (e.g., un-coated) surfaces. The mirror device may be formed using known approaches, such as through the deposition of a metallic material on to a surface of the mirror device followed by one or more optional coating layers. Before, or after, forming the highly-reflective surface, a visual indicator may be introduced on to a surface of the mirror device that is opposite the highly-reflective surface. The visual indicator may comprise, for example, random scratches/scoring etched from a wire brush or tool, paint, epoxy, ink, or any other indicator that allows a technician to visually differentiate the portion of the mirror device having the visual indicator from the highly-reflective portion.

公开(公告)号：US20180210156A1

公开(公告)日：2018-07-26

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

CPC classification number: G02B6/4263 ,  G02B6/4251 ,  G02B6/4274 ,  H04B10/40 ,  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：US09923635B2

公开(公告)日：2018-03-20

申请号：US15176404

申请日：2016-06-08

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Hsiu-Che Wang ,  YongXuan Liang

IPC: H04B10/2581 ,  H04B10/40 ,  H04B10/50 ,  H04B10/572 ,  H04B10/66 ,  G02B6/293 ,  G02B6/42

CPC classification number: H04B10/40 ,  G02B6/2938 ,  G02B6/4215 ,  G02B6/4246 ,  H04B10/506 ,  H04J14/0256

Abstract: A multi-channel optical transmitter or transceiver uses a reversed planar lightwave circuit (PLC) splitter as an optical multiplexer to combine optical signals at different channel wavelengths into a multiplexed optical signal. The reversed PLC splitter includes splitter output ports that are used as the mux input ports and a splitter input port that is used as the mux output port. The mux input ports may be optically coupled to respective transmitter optical subassembly (TOSA) modules with or without optical fibers. The PLC splitter includes wavelength independent branched waveguides that combine the optical signals received on the mux input ports into the multiplexed optical signal on the mux output port.

公开(公告)号：US09891395B2

公开(公告)日：2018-02-13

申请号：US15210193

申请日：2016-07-14

Applicant: Applied Optoelectronics, Inc.

Inventor： Kai-Sheng Lin ,  Hsiu-Che Wang ,  Yong-Xuan Liang

IPC: G02B6/42 ,  H04B10/572 ,  H04B10/40 ,  G02B6/12 ,  H04J14/02

CPC classification number: G02B6/4246 ,  G02B6/00 ,  G02B6/12016 ,  G02B6/4249 ,  G02B6/4262 ,  G02B6/4292 ,  H04B10/40 ,  H04B10/506

Abstract: A multi-channel optical transmitter or transceiver includes an optical multiplexer with input and output ports on a single side. The optical multiplexer receives optical signals at different channel wavelengths on a plurality of mux input ports on one side and combines the optical signals into a multiplexed optical signal, which is output on an optical output port on the same side. The optical multiplexer may be located at a distal end of a transceiver or transmitter housing. In one embodiment, the optical multiplexer is a reversed planar lightwave circuit (PLC) splitter including splitter output ports that are used as the mux input ports and a splitter input port that is used as the mux output port. The mux input ports may be optically coupled to respective transmitter optical subassembly (TOSA) modules with optical fibers.

公开(公告)号：US20180017745A1

公开(公告)日：2018-01-18

申请号：US15210193

申请日：2016-07-14

Applicant: Applied Optoelectronics, Inc.

Inventor： Kai-Sheng LIN ,  Hsiu-Che WANG ,  Yong-Xuan LIANG

IPC: G02B6/42 ,  G02B6/12 ,  H04B10/572 ,  H04B10/40 ,  H04J14/02

CPC classification number: G02B6/4246 ,  G02B6/00 ,  G02B6/12016 ,  G02B6/4249 ,  G02B6/4262 ,  G02B6/4292 ,  H04B10/40 ,  H04B10/506

Abstract: A multi-channel optical transmitter or transceiver includes an optical multiplexer with input and output ports on a single side. The optical multiplexer receives optical signals at different channel wavelengths on a plurality of mux input ports on one side and combines the optical signals into a multiplexed optical signal, which is output on an optical output port on the same side. The optical multiplexer may be located at a distal end of a transceiver or transmitter housing. In one embodiment, the optical multiplexer is a reversed planar lightwave circuit (PLC) splitter including splitter output ports that are used as the mux input ports and a splitter input port that is used as the mux output port. The mux input ports may be optically coupled to respective transmitter optical subassembly (TOSA) modules with optical fibers.

公开(公告)号：US09866329B2

公开(公告)日：2018-01-09

申请号：US15176382

申请日：2016-06-08

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  YongXuan Liang ,  Stella Liang Chen

IPC: H04B10/40 ,  H04B10/50 ,  H04B10/66 ,  H04B10/572 ,  H04J14/02

CPC classification number: H04B10/40 ,  G02B6/4215 ,  G02B6/4231 ,  G02B6/4256 ,  G02B6/43 ,  H04B10/503 ,  H04B10/506 ,  H04B10/572 ,  H04B10/66 ,  H04J14/02 ,  H04J14/0256

Abstract: A multi-channel optical transmitter or transceiver includes transmitter optical subassembly (TOSA) modules optically coupled to and directly aligned with mux input ports of an optical multiplexer without using optical fibers. The optical multiplexer may include an arrayed waveguide grating (AWG) or a reversed planar lightwave circuit (PLC) splitter and may be located in a multiplexer housing having at least one side wall with input apertures aligned with the mux input ports. The TOSA modules may include a base supporting at least a laser, laser driving circuitry, and a lens for focusing the light output from the laser. Z-rings may be used to facilitate alignment and to mount the TOSA bases to the side wall of the multiplexer housing, for example, by laser welding.

公开(公告)号：US20170359125A1

公开(公告)日：2017-12-14

申请号：US15176382

申请日：2016-06-08

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung HO ,  YongXuan LIANG ,  Stella Liang CHEN

IPC: H04B10/40 ,  H04B10/66 ,  H04B10/572 ,  H04B10/50 ,  H04J14/02

CPC classification number: H04B10/40 ,  G02B6/4215 ,  G02B6/4231 ,  G02B6/4256 ,  G02B6/43 ,  H04B10/503 ,  H04B10/506 ,  H04B10/572 ,  H04B10/66 ,  H04J14/02 ,  H04J14/0256

Abstract: A multi-channel optical transmitter or transceiver includes transmitter optical subassembly (TOSA) modules optically coupled to and directly aligned with mux input ports of an optical multiplexer without using optical fibers. The optical multiplexer may include an arrayed waveguide grating (AWG) or a reversed planar lightwave circuit (PLC) splitter and may be located in a multiplexer housing having at least one side wall with input apertures aligned with the mux input ports. The TOSA modules may include a base supporting at least a laser, laser driving circuitry, and a lens for focusing the light output from the laser. Z-rings may be used to facilitate alignment and to mount the TOSA bases to the side wall of the multiplexer housing, for example, by laser welding.