Title:
波長変換素子およびその作製方法
Document Type and Number:
Japanese Patent JP7059904
Kind Code:
B2
Abstract:
With a wavelength conversion device based on a nonlinear optical effect, when arrayed waveguides including an intended nonlinear waveguide are fabricated, unwanted slab waveguides are inevitably formed. The slab waveguides can cause an erroneous measurement in the selection of a waveguide having desired characteristics from the arrayed waveguides. The erroneous measurement can lead to redoing steps for fabricating the wavelength conversion device and a decrease in the yield and inhibit the evaluation of the characteristics in selection of the waveguide and the subsequent fabrication of the wavelength conversion device from being efficiently performed. A wavelength conversion device according to the present invention includes a plurality of waveguides formed on a substrate, and a plurality of slab waveguides that are arranged substantially in parallel with and spaced apart from the plurality of waveguides, and each of the slab waveguides has a grating structure that reflects light of a particular wavelength.
More Like This:
Inventors:
Takushi Kazama
Takahiro Kashiwazaki
Tadaga Osamu
Koji Tsutomu
Ryoichi Kasahara
Takeshi Umeki
Takahiro Kashiwazaki
Tadaga Osamu
Koji Tsutomu
Ryoichi Kasahara
Takeshi Umeki
Application Number:
JP2018215578A
Publication Date:
April 26, 2022
Filing Date:
November 16, 2018
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G02F1/377; G02B6/12; G02B6/124; G02B6/13; G02B6/136; G02F1/39; H04B10/00
Domestic Patent References:
| JP2014211539A | ||||
| JP2011043657A | ||||
| JP2001133647A | ||||
| JP2017044781A |
Foreign References:
| US5185752 |
Attorney, Agent or Firm:
Patent Business Corporation Tani / Abe Patent Office
Previous Patent: Communication device and communication method
Next Patent: Display system for vehicles
Next Patent: Display system for vehicles