Process for polishing end face of gigabit plastic optical fiber

    公开(公告)号:US11079554B1

    公开(公告)日:2021-08-03

    申请号:US16801981

    申请日:2020-02-26

    Abstract: A process for polishing the end face of a gigabit plastic optical fiber (GbPOF) to produce a mirror smooth surface without any defect. Smooth GbPOF end faces reduce the optical coupling loss when two plastic optical fibers are connected. The polishing process can be used to produce GbPOF end faces which are free of defects such as scratches. The polishing process involves the use of successive abrasive films having decreasing surface roughness to abrade the end of a GbPOF. More specifically, each subsequently applied abrasive film has a mean particle size which is less than the mean particle size of the previously applied abrasive film.

    Single-Wavelength Bidirectional Transceiver with Integrated Optical Fiber Coupler

    公开(公告)号:US20190296828A1

    公开(公告)日:2019-09-26

    申请号:US15926308

    申请日:2018-03-20

    Abstract: An apparatus configured to function as a pluggable single-wavelength bidirectional transceiver in a switching network. The apparatus includes: a 2×1 fusion coupler; an input/output optical fiber, a detector optical subassembly (OSA) fiber and a laser OSA fiber all connected to the 2×1 fusion coupler; and a transceiver that includes a transceiver electronic circuit printed wiring board (PWB) and laser and detector OSAs electrically coupled to the transceiver electronic circuit PWB. The laser OSA includes a laser that is situated to transmit light to the laser OSA fiber, while the detector OSA includes a photodetector that is situated to receive light from the detector OSA fiber. The transceiver electronic circuit PWB also includes a multiplicity of transceiver input/output metal contacts arranged at one pluggable end of the PWB.

    Ruggedized photonic crystal sensor packaging

    公开(公告)号:US10338328B2

    公开(公告)日:2019-07-02

    申请号:US15957784

    申请日:2018-04-19

    Abstract: A method, system, and apparatus are disclosed for a ruggedized photonic crystal (PC) sensor packaging. In particular, the present disclosure teaches a ruggedized packaging for a photonic crystal sensor that includes of a hermetic-seal high-temperature jacket and a ferrule that eliminate the exposure of the optical fiber as well as the critical part of the photonic crystal sensor to harsh environments. The disclosed packaging methods enable photonic crystal based sensors to operate in challenging environments where adverse environmental conditions, such as electromagnetic interference (EMI), corrosive fluids, large temperature variations, and strong mechanical vibrations, currently exclude the use of traditional sensor technologies.

    Fuel level sensor having dual fluorescent plastic optical fibers

    公开(公告)号:US10175087B2

    公开(公告)日:2019-01-08

    申请号:US15428626

    申请日:2017-02-09

    Abstract: An airplane fuel level optical sensor using one side-emitting plastic optical fiber (SPOF) and two fluorescent plastic optical fibers (FPOFs) to detect the airplane fuel level without using any electrically conductive component or element placed inside the fuel tank. This dual-FPOF sensor is capable of achieving high resolution and high accuracy with a one-time calibration in the actual airplane's fuel tank environment. One embodiment of the dual-FPOF sensor uses one SPOF and two FPOFs to detect fuel level change based on the optical signal output from the two FPOFs. The sensor design uses large-diameter (core and cladding), lightweight, low-cost and high-durability plastic optical fiber, which is very desirable for airplane installation.

    RUGGEDIZED PHOTONIC CRYSTAL SENSOR PACKAGING
    6.
    发明申请
    RUGGEDIZED PHOTONIC CRYSTAL SENSOR PACKAGING 审中-公开
    独特的光电晶体传感器包装

    公开(公告)号:US20170031116A1

    公开(公告)日:2017-02-02

    申请号:US15294584

    申请日:2016-10-14

    Abstract: A method, system, and apparatus are disclosed for a ruggedized photonic crystal (PC) sensor packaging. In particular, the present disclosure teaches a ruggedized packaging for a photonic crystal sensor that includes of a hermetic-seal high-temperature jacket and a ferrule that eliminate the exposure of the optical fiber as well as the critical part of the photonic crystal sensor to harsh environments. The disclosed packaging methods enable photonic crystal based sensors to operate in challenging environments where adverse environmental conditions, such as electromagnetic interference (EMI), corrosive fluids, large temperature variations, and strong mechanical vibrations, currently exclude the use of traditional sensor technologies.

    Abstract translation: 公开了一种用于加固型光子晶体(PC)传感器封装的方法,系统和装置。 特别地,本公开教导了用于光子晶体传感器的加固封装,其包括密封高温护套和套圈,其消除光纤的暴露以及光子晶体传感器的关键部分到苛刻的 环境。 所披露的包装方法使得基于光子晶体的传感器能​​够在恶劣环境中操作,其中恶劣的环境条件,例如电磁干扰(EMI),腐蚀性流体,大的温度变化和强烈的机械振动,目前不包括使用传统的传感器技术。

    Optical Impedance Modulation for Fuel Quantity Measurement
    7.
    发明申请
    Optical Impedance Modulation for Fuel Quantity Measurement 有权
    用于燃料量测量的光阻抗调制

    公开(公告)号:US20160138958A1

    公开(公告)日:2016-05-19

    申请号:US14547828

    申请日:2014-11-19

    CPC classification number: G01F23/292 B64D37/005 G01F22/00 Y02T50/44

    Abstract: Systems and methods that use an optical impedance sensor that eliminates electricity for measuring fuel quantity in fuel tanks. The optical impedance sensor comprises two optical fibers spaced apart inside a meniscus tube, one to transmit light along its length and the other to receive light along its length. The meniscus tube minimizes the sloshing of fuel level. The fuel level in the tank modulates the optical impedance between the two optical fibers, resulting in changes in the total light received by an optical detector. Depending on fuel tank height, the optical impedance sensor may comprise different embodiments in which the detection apparatus shapes the light to be unidirectional (emitted and collected only on one side of the fiber) or omnidirectional (all directions).

    Abstract translation: 使用光阻抗传感器的系统和方法,消除用于测量燃料箱中燃料量的电力。 光阻抗传感器包括在弯液面管内分开的两根光纤,一根沿其长度透射光线的光纤,另一根光纤沿其长度接收光。 弯液面管使燃油液位的晃动最小化。 油箱中的燃油液位调制两根光纤之间的光阻抗,导致由光学检测器接收到的总光的变化。 根据燃料箱高度,光阻抗传感器可以包括不同的实施例,其中检测装置将光形成单向(仅在光纤的一侧发射和收集)或全向(所有方向)。

Patent Agency Ranking