Title:
VARIABLE WAVELENGTH LASER ELEMENT AND LASER MODULE
Document Type and Number:
WIPO Patent Application WO/2016/152274
Kind Code:
A1
Abstract:
Provided is a variable wavelength laser element provided with: a laser resonator constituted of a diffraction grating and a reflective mirror that includes a ring resonator filter; a gain unit; and a phase adjusting unit. The diffraction grating generates a first comb shaped reflection spectrum. The ring resonator filter is provided with a ring-shaped waveguide and two arm parts, and generates a second comb shaped reflection spectrum that differs in wavelength interval from the first comb shaped reflection spectrum at a peak narrower than the full width at half maximum of the first comb shaped reflection spectrum. One peak of the first comb shaped reflection spectrum and one peak of the second comb shaped reflection spectrum are superimposed on the wavelength axis. The interval between modes for resonator mode is a wavelength narrower than the full width at half maximum of the peak for the first comb shaped reflection spectrum.
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Inventors:
KAWAKITA YASUMASA (JP)
HIGA YASUTAKA (JP)
IWAI NORIHIRO (JP)
KUROBE TATSURO (JP)
HIGA YASUTAKA (JP)
IWAI NORIHIRO (JP)
KUROBE TATSURO (JP)
Application Number:
PCT/JP2016/053463
Publication Date:
September 29, 2016
Filing Date:
February 05, 2016
Export Citation:
Assignee:
FURUKAWA ELECTRIC CO LTD (JP)
International Classes:
H01S5/10
Foreign References:
| US20110310918A1 | 2011-12-22 | |||
| JP2009049083A | 2009-03-05 | |||
| JP2008066318A | 2008-03-21 | |||
| US20060127007A1 | 2006-06-15 |
Other References:
LIN WU ET AL.: "Wavelength Switchable Semiconductor Laser based on Half-Wave Coupled Fabry-Perot and Rectangular Ring Resonators", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 24, no. 12, 15 June 2012 (2012-06-15), pages 991 - 993, XP011443622
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
Patent business corporation Sakai international patent firm (JP)
Patent business corporation Sakai international patent firm (JP)
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