Patents by Inventor Che-Jen CHANG

Che-Jen CHANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Triplexer and/or optical line terminal compatible with a 10G ethernet passive optical network and a housing therefor
    Patent number: 8931966
    Abstract: An optical triplexer and/or optical line terminal (OLT) compatible with 1.25 and 10 Gb/s passive optical networks is disclosed. The triplexer/OLT includes an optical fiber, first and second laser diodes, a photodiode, and first and second lenses. A hemispherical lens may be at an end face of the photodiode or receiver subassembly housing. A first optical splitter is mounted between the first and second lenses, and a second optical splitter is mounted between the optical fiber and the second laser diode. The first lens and first laser diode, and the second lens and second laser diode share respective common linear optical axes. The present triplexer/OLT advantageously accords with an interface standard IEEE802.3av-2009 PRX30. In addition, the present triplexer can advantageously implement analog receiving and digital transceiving, save optical fiber resources, and provide high efficiency coupling. Thus, requirements for high power output and smaller housing outlines can be served.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: January 13, 2015
    Assignee: Source Photonics, Inc.
    Inventors: Chien-Hsiung Chiu, Hung-Yuan Chen, Chih-Lung Nien, Che-Jen Chang, Shih-Pin Ko, Pei-Keng Fu, Tsai-Wei Chen
  • Triplexer and/or Optical Line Terminal Compatible with a 10G Ethernet Passive Optical Network and a Housing Therefor
    Publication number: 20130105672
    Abstract: An optical triplexer and/or optical line terminal (OLT) compatible with 1.25 and 10 Gb/s passive optical networks is disclosed. The triplexer/OLT includes an optical fiber, first and second laser diodes, a photodiode, and first and second lenses. A hemispherical lens may be at an end face of the photodiode or receiver subassembly housing. A first optical splitter is mounted between the first and second lenses, and a second optical splitter is mounted between the optical fiber and the second laser diode. The first lens and first laser diode, and the second lens and second laser diode share respective common linear optical axes. The present triplexer/OLT advantageously accords with an interface standard IEEE802.3av-2009 PRX30. In addition, the present triplexer can advantageously implement analog receiving and digital transceiving, save optical fiber resources, and provide high efficiency coupling. Thus, requirements for high power output and smaller housing outlines can be served.
    Type: Application
    Filed: December 30, 2011
    Publication date: May 2, 2013
    Inventors: Chien-Hsiung CHIU, Hung-Yuan CHEN, Chih-Lung NIEN, Che-Jen CHANG, Shih-Pin KO, Pei-Keng FU, Tsai-Wei CHEN