JPS572004A - Radiation type optical grating element - Google Patents

Radiation type optical grating element

Info

Publication number
JPS572004A
JPS572004A JP7494080A JP7494080A JPS572004A JP S572004 A JPS572004 A JP S572004A JP 7494080 A JP7494080 A JP 7494080A JP 7494080 A JP7494080 A JP 7494080A JP S572004 A JPS572004 A JP S572004A
Authority
JP
Japan
Prior art keywords
grating
length
weighting
light beam
make
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7494080A
Other languages
Japanese (ja)
Inventor
Riichi Kodama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7494080A priority Critical patent/JPS572004A/en
Publication of JPS572004A publication Critical patent/JPS572004A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

PURPOSE:To manufacture an element easily and also to make a control range of weighting wide, by changing the length of a grating in the direction meeting at right angles with the propagating direction of a light beam in a waveguide path, depending on each position. CONSTITUTION:Height of each grating 20 which is constituted in a waveguide path 10 is constant, and length of the grating 20 in the direction meeting at right angles with the propagating direction of a light beam is made variable. As a result, since the extent of radiation of a light beam radiated from each grating 20 is proportional to the length of each grating 20, the length of each grating is set so as to be proportional to a desired extent of weighting. Since it is unnecessary to change the height of each grating 20, it is possible to make a range of weighting wide and also make its accuracy satisfactory, and furthermore, its element can be manufactured easily.
JP7494080A 1980-06-05 1980-06-05 Radiation type optical grating element Pending JPS572004A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7494080A JPS572004A (en) 1980-06-05 1980-06-05 Radiation type optical grating element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7494080A JPS572004A (en) 1980-06-05 1980-06-05 Radiation type optical grating element

Publications (1)

Publication Number Publication Date
JPS572004A true JPS572004A (en) 1982-01-07

Family

ID=13561837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7494080A Pending JPS572004A (en) 1980-06-05 1980-06-05 Radiation type optical grating element

Country Status (1)

Country Link
JP (1) JPS572004A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61241712A (en) * 1985-04-18 1986-10-28 Matsushita Electric Ind Co Ltd Input-output device for guided light
JPS61241711A (en) * 1985-04-18 1986-10-28 Matsushita Electric Ind Co Ltd Waveguide optical input/output device
US7260293B1 (en) * 2003-02-11 2007-08-21 Luxtera, Inc. Optical waveguide grating coupler with varying scatter cross sections
JP2017156634A (en) * 2016-03-03 2017-09-07 株式会社豊田中央研究所 Grating coupler, grating coupler array, imaging optical system, optical scanner, and laser radar device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61241712A (en) * 1985-04-18 1986-10-28 Matsushita Electric Ind Co Ltd Input-output device for guided light
JPS61241711A (en) * 1985-04-18 1986-10-28 Matsushita Electric Ind Co Ltd Waveguide optical input/output device
US7260293B1 (en) * 2003-02-11 2007-08-21 Luxtera, Inc. Optical waveguide grating coupler with varying scatter cross sections
JP2017156634A (en) * 2016-03-03 2017-09-07 株式会社豊田中央研究所 Grating coupler, grating coupler array, imaging optical system, optical scanner, and laser radar device

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