Title:
RADIO-ON-FIBER UNIT AND RADIO-ON-FIBER SYSTEM
Document Type and Number:
WIPO Patent Application WO/2010/001438
Kind Code:
A1
Abstract:
[PROBLEMS] An object of the present invention is to provide a radio-on-fiber unit and a radio-on-fiber system which can transmit/receive signals at adequate rates especially, to/from a mobile device. [MEANS FOR SOLVING PROBLEMS] A first aspect of the present invention relates to a radio-on-fiber unit (3) which includes an antenna array (1) and a light modulator array (2). The light modulator array (2) comprises antenna elements (5) and light modulators (7) that are connected with the respective antenna elements via electric circuits. The optical waveguide (13) is composed of linear optical waveguides (13) that are arranged along the light modulators (7) included in certain lines among the light modulators (7). The light modulator array (2) comprises reflection units (17) for connecting two adjacent linear optical waveguides with each other. Consequently, a signal light inputted to a light input unit (11) is outputted from a light output unit (15) via each linear optical waveguide (13).
Inventors:
SHINADA SATOSHI (JP)
KAWANISHI TETSUYA (JP)
NAKAJIMA SHINYA (JP)
KAWANISHI TETSUYA (JP)
NAKAJIMA SHINYA (JP)
Application Number:
PCT/JP2008/001753
Publication Date:
January 07, 2010
Filing Date:
July 03, 2008
Export Citation:
Assignee:
NAT INST INF & COMM TECH (JP)
SHINADA SATOSHI (JP)
KAWANISHI TETSUYA (JP)
NAKAJIMA SHINYA (JP)
SHINADA SATOSHI (JP)
KAWANISHI TETSUYA (JP)
NAKAJIMA SHINYA (JP)
International Classes:
H01Q23/00; H01Q21/06; H01S3/10; H04B10/2575
Foreign References:
| JPH1168675A | 1999-03-09 | |||
| JP2001053542A | 2001-02-23 |
Other References:
W.B. BRIDGES ET AL.: "Wave-coupled LiNb03 electrooptic modulator for microwave and millimeter-wave modulation", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 3, no. 2, February 1991 (1991-02-01), pages 133 - 135, XP000203007
S.SHINADA ET AL.: "A 10-GHz Resonant-Type LiNb03 Optical Modulator Array", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 19, no. 10, May 2007 (2007-05-01), pages 735 - 737, XP011177240
"Conference Record of the 2002 IEEE Industry Applications Conference: 37th IAS Annual Meeting, 2002.10", vol. 1, article K.HAEIWA ET AL.: "Optical RF-TV signal sensing and transmission for terrestrial TV relaying stations", pages: 297 - 302, XP010610237
"Conference Proceedings of the 2005 IEEE International Symposium on Circuits and Systems, 2005.05", vol. 2, article T.YAMASHITA ET AL.: "Development of a microwave receiving and transmission system using an optical modulator", pages: 1517 - 1520, XP010815807
S.SHINADA ET AL.: "A 10-GHz Resonant-Type LiNb03 Optical Modulator Array", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 19, no. 10, May 2007 (2007-05-01), pages 735 - 737, XP011177240
"Conference Record of the 2002 IEEE Industry Applications Conference: 37th IAS Annual Meeting, 2002.10", vol. 1, article K.HAEIWA ET AL.: "Optical RF-TV signal sensing and transmission for terrestrial TV relaying stations", pages: 297 - 302, XP010610237
"Conference Proceedings of the 2005 IEEE International Symposium on Circuits and Systems, 2005.05", vol. 2, article T.YAMASHITA ET AL.: "Development of a microwave receiving and transmission system using an optical modulator", pages: 1517 - 1520, XP010815807
Attorney, Agent or Firm:
HIROSE, TAKAYUKI (JP)
Takayuki Hirose (JP)
Takayuki Hirose (JP)
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