Title:
OPTICAL RECEIVER, OPTICAL TERMINAL DEVICE, AND OPTICAL COMMUNICATIONS SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/185926
Kind Code:
A1
Abstract:
The present invention comprises: a preamplifier (2) that converts a current signal converted from an input optical signal, to a voltage signal; an LIA (3) that amplifies and limits the voltage signal; a transmission path (4) that connects the preamplifier (2) and the LIA (3); a AC coupling capacitance (5) inserted in the transmission path (4) or at an end of the transmission path (4); a terminal circuit (6) connected to the transmission path (4) and, on the basis of a switching signal, switches to a first resistance value or a second resistance value higher than the first resistance value; and an AC load (10) connected to the transmission path (4), becoming open in a low-frequency range for the voltage signal, and becoming a resistance value whereby impedance matching with the preamplifier (2) and the transmission path (4) is possible in a high-frequency range for the voltage signal. The terminal circuit (6) and the AC load (10) are electrically connected in parallel.
Inventors:
MITA DAISUKE (JP)
Application Number:
PCT/JP2017/014490
Publication Date:
October 11, 2018
Filing Date:
April 07, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H04B10/60; H04B10/272
Foreign References:
| JP2009135849A | 2009-06-18 | |||
| JPH04309025A | 1992-10-30 | |||
| JP2013255037A | 2013-12-19 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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