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Patent Searching and Data


Title:
RIDGE WAVEGUIDE PATH AND LASER DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/116544
Kind Code:
A1
Abstract:
In this invention, first cladding (4) having a lower refractive index than the refractive index of a core (2) is provided at an apical portion (3a) of a ridge structure section (3) formed on the core (2). This configuration allows for the elimination of signal loss which occurs concomitantly to a resist coming in direct contact with the core (2).

Inventors:
WATANABE YOJIRO (JP)
SHODA FUMIO (JP)
HIROSAWA KENICHI (JP)
YANAGISAWA TAKAYUKI (JP)
KAMEYAMA SHUMPEI (JP)
Application Number:
JP2017/045133
Publication Date:
June 20, 2019
Filing Date:
December 15, 2017
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (Postcode1008310, JP)
International Classes:
H01S3/063
Domestic Patent References:
WO2018020641A12018-02-01
Foreign References:
JP2017069252A2017-04-06
JP2011054677A2011-03-17
JP2007258494A2007-10-04
JP2003207660A2003-07-25
US6157765A2000-12-05
Other References:
KOKUBUN, Y. ET AL.: "Temperature-independent optical filter at 1.55┬Ám wavelength using a silica-based athermal waveguide", ELECTRONICS LETTERS, vol. 34, no. 4, 19 February 1998 (1998-02-19), pages 367 - 369, XP006009300, DOI: doi:10.1049/el:19980245
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (Postcode1000014, JP)
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