Title:
N×N OPTICAL SWITCH
Document Type and Number:
WIPO Patent Application WO/2018/198927
Kind Code:
A1
Abstract:
The present invention implements an N×N optical switch capable of reducing intersection loss in ports, to which an optical waveguide having a maximum number of intersections and the highest intersection loss is connected, of an optical switch configured by connecting output ports of input-side optical switches and input ports of output-side optical switches by means of optical waveguides on the same substrate. A 4×4 optical switch (10) is provided with four input-side 1×4 optical switches (SW11-SW14) each having four output ports (P1-P4), four output-side 4×1 optical switches (SW21-SW24) each having four input ports (Q1-Q4), and connection optical waveguides (OW) connecting the output ports and the input ports, wherein some of the connection optical waveguides OW intersect two or more other connection waveguides OW at one point.
Inventors:
MURANAKA YUSUKE (JP)
NAKAHARA TATSUSHI (JP)
HASHIMOTO TOSHIKAZU (JP)
NAKAHARA TATSUSHI (JP)
HASHIMOTO TOSHIKAZU (JP)
Application Number:
PCT/JP2018/016131
Publication Date:
November 01, 2018
Filing Date:
April 19, 2018
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G02F1/313; G02B6/125
Foreign References:
| JP2016161604A | 2016-09-05 | |||
| US20120027339A1 | 2012-02-02 | |||
| US20050036737A1 | 2005-02-17 | |||
| JPH07230013A | 1995-08-29 | |||
| JP2006243013A | 2006-09-14 | |||
| JPH11271551A | 1999-10-08 |
Other References:
MURANAKA ET AL.: "Monolithically Integrated 4x4 Optical Switch with Cascaded MZIs and EAM-Gate Array", 2017 EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC), 17 September 2017 (2017-09-17), pages 1 - 3, XP033336289
Attorney, Agent or Firm:
TANI & ABE, P.C. (JP)
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