Title:
OPTICAL SCAN DEVICE, LIGHT RECEIVING DEVICE, AND OPTICAL DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/061514
Kind Code:
A1
Abstract:
This optical scan device is provided with a first waveguide which propagates light in a waveguide direction by total reflection, and a second waveguide. The second waveguide is provided with: a first multilayer reflective film, a second multilayer reflective film opposite of the first multilayer reflective film, and a first optical waveguide layer which is connected directly to the first waveguide and is positioned between the first multilayer reflective film and the second multilayer reflective film. The first optical waveguide layer has a variable thickness and/or a variable refractive index to the aforementioned light, and propagates the light that has been propagated through the first waveguide. The first multilayer reflective film has a light transmittance higher than that of the second multilayer reflective film, and emits a portion of the aforementioned light propagated inside the first optical waveguide layer to outside of the second waveguide. By changing the thickness and/or refractive index to the aforementioned light of the first optical waveguide layer, the direction of the aforementioned portion of the light emitted from the second waveguide is changed.
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Inventors:
HASHIYA AKIRA
INADA YASUHISA
HIRASAWA TAKU
YAMAOKA YOSHIKAZU
NAGAO NOBUAKI
INADA YASUHISA
HIRASAWA TAKU
YAMAOKA YOSHIKAZU
NAGAO NOBUAKI
Application Number:
PCT/JP2017/029703
Publication Date:
April 05, 2018
Filing Date:
August 21, 2017
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G02F1/295; G01S17/89; G02B26/06; G02B26/08
Domestic Patent References:
| WO2013168266A1 | 2013-11-14 |
Foreign References:
| US8995038B1 | 2015-03-31 | |||
| JP2013016591A | 2013-01-24 | |||
| JP2016508235A | 2016-03-17 | |||
| JP2013016591A | 2013-01-24 |
Other References:
GU,XIAODONG ET AL.: "Electro-Thermal Beam Steering Using Bragg Reflector Waveguide Amplifier", JAPANESE JOURNAL OF APPLIED PHYSICS, vol. 51, 2012, pages 020206 - 1 - 020206-3, XP055537237
NAKAMURA,K. ET AL.: "Slow-light Bragg reflector waveguide array for two-dimensional beam steering", JAPANESE JOURNAL OF APPLIED PHYSICS, vol. 53, no. 3, March 2014 (2014-03-01), XP055537235
FUCHIDA,A. ET AL.: "Slow Light Total- Internal-Reflection Optical Switch with 90- degree Bend", CLEO/QELS, 2008, pages 1 - 2, XP031278291
M. LAMPONI ET AL.: "Low-Threshold Heterogeneously Integrated InP/SOI Lasers With a Double Adiabatic Taper Coupler", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 24, no. 1, 1 January 2012 (2012-01-01), pages 76 - 78, XP011507756, DOI: doi:10.1109/LPT.2011.2172791
"Free charge carrier induced refractive index modulation of crystalline Silicon", 7 H IEEE INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS, 1 September 2010 (2010-09-01), pages 102 - 104
"Low-Driving-Voltage Electro-Optic Modulator With Novel KTa1-xNbx03 Crystal Waveguides", JPN. J. APPL. PHYS., vol. 43, no. 8B, 2004
See also references of EP 3521919A4
NAKAMURA,K. ET AL.: "Slow-light Bragg reflector waveguide array for two-dimensional beam steering", JAPANESE JOURNAL OF APPLIED PHYSICS, vol. 53, no. 3, March 2014 (2014-03-01), XP055537235
FUCHIDA,A. ET AL.: "Slow Light Total- Internal-Reflection Optical Switch with 90- degree Bend", CLEO/QELS, 2008, pages 1 - 2, XP031278291
M. LAMPONI ET AL.: "Low-Threshold Heterogeneously Integrated InP/SOI Lasers With a Double Adiabatic Taper Coupler", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 24, no. 1, 1 January 2012 (2012-01-01), pages 76 - 78, XP011507756, DOI: doi:10.1109/LPT.2011.2172791
"Free charge carrier induced refractive index modulation of crystalline Silicon", 7 H IEEE INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS, 1 September 2010 (2010-09-01), pages 102 - 104
"Low-Driving-Voltage Electro-Optic Modulator With Novel KTa1-xNbx03 Crystal Waveguides", JPN. J. APPL. PHYS., vol. 43, no. 8B, 2004
See also references of EP 3521919A4
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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