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公开(公告)号：US10949372B2
公开(公告)日：2021-03-16
申请号：US16779114
申请日：2020-01-31
Applicant: THE BOEING COMPANY
Inventor： Eric Y. Chan , Henry B. Pang , Tuong Kien Truong
Abstract: A line replacement unit includes a terminal controller, and a plastic optical fiber serial interface module (POFSIM) coupled between the terminal controller and the data bus. The POFSIM is configured to transmit digital optical signals to the data bus based on electrical signals received from the terminal controller, and transmit electrical signals to the terminal controller based on digital optical signals received from the data bus.
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公开(公告)号：US20210067250A1
公开(公告)日：2021-03-04
申请号：US16551282
申请日：2019-08-26
Applicant: The Boeing Company
Inventor： Eric Y. Chan , Dennis G. Koshinz , Kim Quan Anh Nguyen
Abstract: A process to enhance the performance of plastic optical fiber to operate with a high data rate (e.g., at least 1 gigabit per second) at high temperature (e.g., 100 degrees Celsius) for airplane avionic systems. Gigabit plastic optical fiber has a core including a dopant that enables data transmission at gigabit rates. The enhancement process uses rapid thermal cooling of the gigabit plastic optical fiber to stabilize the polymer matrix of the fiber. This rapid cooling treatment blocks dopant diffusion in a high-temperature environment, thereby avoiding degradation of the fiber's bandwidth and optical loss characteristic. Such degradation typically occurs in gigabit plastic optical fiber having core and cladding made of transparent carbon-hydrogen bond-free perfluorinated polymer.
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公开(公告)号：US10935413B2
公开(公告)日：2021-03-02
申请号：US16380368
申请日：2019-04-10
Applicant: The Boeing Company
Inventor： Eric Y. Chan , Dennis G. Koshinz
IPC: G01F23/292 , B64D37/00 , B64D43/00
Abstract: A fuel sensing system utilizes non-contact plastic optical fiber (POF) to optically sense the level of liquid fuel in a fuel tank. In one implementation, the fuel level sensing system includes the following elements: (i) a high-speed and high-power red laser diode; (ii) an ultra-high-sensitivity photon-counting avalanche photodiode; and (iii) a large-diameter and large-numerical-aperture graded-index POF. The fuel level is sensed when the avalanche photodiode first detects impinging light reflected by the POF end face and then detects impinging light reflected by the fuel surface in response to emission of a laser pulse by the red laser diode. A time delay detection circuit calculates the time interval separating the respective times of arrival. A fuel level calculator calculates the fuel level based on the time interval provided by the time delay detection circuit.
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公开(公告)号：US10895696B2
公开(公告)日：2021-01-19
申请号：US16664751
申请日：2019-10-25
Applicant: The Boeing Company
Inventor： Dennis G. Koshinz , Eric Y. Chan , Tuong K. Truong , Kim Quan Anh Nguyen
Abstract: An epoxy-free, high-durability and low-cost plastic optical fiber splice design and fabrication process which meets commercial airplane environmental requirements. The splice design: (1) does not require the use of epoxy to join the end faces of two plastic optical fibers together; (2) incorporates double-crimp rings to provide highly durable pull force for the plastic optical fibers that are joined together; (3) resolves any vibration problem at the plastic optical fiber end faces using a miniature stop inside a splice alignment sleeve; and (4) incorporates a splice alignment sleeve that can be mass produced using precision molding or three-dimensional printing processes.
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公开(公告)号：US20200158972A1
公开(公告)日：2020-05-21
申请号：US16193699
申请日：2018-11-16
Applicant: The Boeing Company
Inventor： Dennis G. Koshinz , Eric Y. Chan , Tuong K. Truong , Henry B. Pang , Kim Quan Anh Nguyen
Abstract: Methods for providing flammability protection for plastic optical fiber (POF) embedded inside avionics line replaceable units (LRUs) or other equipment used in airborne vehicles such as commercial or fighter aircrafts. A thin and flexible flammability protection tube is placed around the POF. In one proposed implementation, a very thin (100 to 250 microns in wall thickness) polyimide tube is placed outside and around the POF cable embedded inside an LRU or other equipment. The thin-walled polyimide tube does not diminish the flexibility of the POF cable.
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Patent Agency Ranking
公开(公告)号：US20200057203A1
公开(公告)日：2020-02-20
申请号：US16664751
申请日：2019-10-25
Applicant: The Boeing Company
Inventor： Dennis G. Koshinz , Eric Y. Chan , Tuong K. Truong , Kim Quan Anh Nguyen
Abstract: An epoxy-free, high-durability and low-cost plastic optical fiber splice design and fabrication process which meets commercial airplane environmental requirements. The splice design: (1) does not require the use of epoxy to join the end faces of two plastic optical fibers together; (2) incorporates double-crimp rings to provide highly durable pull force for the plastic optical fibers that are joined together; (3) resolves any vibration problem at the plastic optical fiber end faces using a miniature stop inside a splice alignment sleeve; and (4) incorporates a splice alignment sleeve that can be mass produced using precision molding or three-dimensional printing processes.
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公开(公告)号：US20190215072A1
公开(公告)日：2019-07-11
申请号：US16355712
申请日：2019-03-16
Applicant: The Boeing Company
Inventor： Tuong K. Truong , Eric Y. Chan , Dennis G. Koshinz , Kim Quan Anh Nguyen , Barkhung Henry Pang , Sean M. Ramey , Timothy E. Jackson
IPC: H04B10/278 , H04B10/27 , G02B6/28 , H04B10/272 , H04B10/66 , H04B10/50 , G02B6/42 , H04L12/40 , G02B6/30 , G02B6/44
CPC classification number: H04B10/278 , G02B6/28 , G02B6/30 , G02B6/4206 , G02B6/4246 , G02B6/443 , H04B10/27 , H04B10/272 , H04B10/50 , H04B10/66 , H04L12/40 , H04L2012/40215
Abstract: A controller area network (CAN) comprising a plurality of CAN nodes that communicate via a CAN bus that comprises a fiber optical network. The fiber optical network uses a single fiber and a single wavelength for transmit and receive, and comprises a passive reflective optical star. The reflective optical star comprises an optical mixing rod having a mirror at one end. The other end of the reflective optical star is optically coupled to the transmitters and receivers of a plurality of optical-electrical media converters by way of respective high-isolation optical Y-couplers. Each CAN node produces electrical signals (in accordance with the CAN message-based protocol) which are converted into optical pulses that are broadcast to the fiber optical network. Those optical pulses are then reflected back to all CAN nodes by the reflective optical star.
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公开(公告)号：US10263706B2
公开(公告)日：2019-04-16
申请号：US15489810
申请日：2017-04-18
Applicant: The Boeing Company
Inventor： Tuong K. Truong , Dennis G. Koshinz , Eric Y. Chan , Kim Quan Anh Nguyen , Sean M. Ramey , Timothy E. Jackson , Barkhung Henry Pang
IPC: H04B10/278 , G02B6/42 , G02B6/44 , G02B6/30 , H04L12/40 , H04B10/272 , H04B10/50 , H04B10/66 , G02B6/28 , H04B10/27
Abstract: A controller area network (CAN) comprising a plurality of CAN nodes that communicate via a CAN bus that comprises a fiber optical network. The fiber optical network uses a single fiber and a single wavelength for transmit and receive, and comprises a passive reflective optical star. The reflective optical star comprises an optical mixing rod having a mirror at one end. The other end of the reflective optical star is optically coupled to the transmitters and receivers of a plurality of optical-electrical media converters by way of respective high-isolation optical Y-couplers. Each CAN node produces electrical signals (in accordance with the CAN message-based protocol) which are converted into optical pulses that are broadcast to the fiber optical network. Those optical pulses are then reflected back to all CAN nodes by the reflective optical star.
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公开(公告)号：US20170336574A1
公开(公告)日：2017-11-23
申请号：US15161552
申请日：2016-05-23
Applicant: The Boeing Company
Inventor： Dennis G. Koshinz , Eric Y. Chan
CPC classification number: G02B6/3863 , B24B19/226 , G02B6/02033 , G02B6/3847
Abstract: A process for polishing the end face of a plastic optical fiber (POF) to produce a mirror smooth surface without any defect. Smooth POF end faces reduce the optical coupling loss when two plastic optical fibers are connected. The polishing process can be used to produce POF end faces which are recessed relative to the adjacent end face of a ferrule surrounding the fiber. When the ends of two ferrules are inserted in a connector designed to align the end faces of the ferrules while allowing those end faces to abut each other, the confronting recessed POF end faces will be separated by an air gap.
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30.发明授权公开(公告)号：US12113328B2
公开(公告)日：2024-10-08
申请号：US17395976
申请日：2021-08-06
Applicant: The Boeing Company
Inventor： Eric Y. Chan , Dennis G. Koshinz , Kim Quan Anh Nguyen , Lyndon G. Mazon
IPC: A61L2/10 , G02B6/10 , H01S5/02251 , H01S5/02345 , H01S5/0237 , H01S5/024 , H01S5/026 , H01S5/042 , H01S5/343
CPC classification number: H01S5/02251 , A61L2/10 , G02B6/102 , H01S5/02345 , H01S5/0237 , H01S5/02469 , H01S5/026 , H01S5/0428 , H01S5/34333 , A61L2202/11
Abstract: An optical subassembly includes a housing, a laser package, and first and second end sections of side-emitting optical fiber. The housing defines first, second, and third channels which extend from a central space. The laser package is affixed to the third channel and comprises an edge-emitting UV-C laser diode disposed in the central space and having first and second edges. The first end section of side-emitting optical fiber is retained in the first channel and has a first end face which confronts the first edge. The second end section of side-emitting optical fiber is retained in the second channel and has a second end face which confronts the second edge. The housing further defines a fourth channel which extends from the central space. The optical subassembly further includes a transparent window seated in an opening of the fourth channel.
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