JPS5473062A - Thin-film mirror type optical branch line - Google Patents

Thin-film mirror type optical branch line

Info

Publication number
JPS5473062A
JPS5473062A JP14027877A JP14027877A JPS5473062A JP S5473062 A JPS5473062 A JP S5473062A JP 14027877 A JP14027877 A JP 14027877A JP 14027877 A JP14027877 A JP 14027877A JP S5473062 A JPS5473062 A JP S5473062A
Authority
JP
Japan
Prior art keywords
branch
light
thru
optical guide
thin
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
JP14027877A
Other languages
Japanese (ja)
Inventor
Hatsuhiko Naito
Katsutoshi Muto
Takashi Nakayama
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP14027877A priority Critical patent/JPS5473062A/en
Publication of JPS5473062A publication Critical patent/JPS5473062A/en
Pending legal-status Critical Current

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  • Optical Integrated Circuits (AREA)

Abstract

PURPOSE:To reduce loss at branch points by specifying the refractive indices of light at branch portions. CONSTITUTION:The refractive indices of light of the branch portions 21 thru 2n between the optical guide 1 formed through thermal diffusion of Ti in a ferrodielectric substrate composed of LiNbO3, etc. and branch lines 11 thru 1n are made larger than the reflective indices of light of the optical guide 1 and branch lines 11 thru 1n by increasing the rate of thermal diffusion of Ti. Then, at the time when the light I entered to the left end of the optical guide 1 is branched to reflected light R and transmitted light T at the first branch point D1 and the transmitted light T is further subsequently branched to reflected light and transmitted light at the second, third branch points D2, D3, the loss at the branch points D1 thru D3 becomes small. The similar effect is also obtained if the substrate is made of LiTaO3 and the branch parts and optical guide portions are formed of Nb.
JP14027877A 1977-11-22 1977-11-22 Thin-film mirror type optical branch line Pending JPS5473062A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14027877A JPS5473062A (en) 1977-11-22 1977-11-22 Thin-film mirror type optical branch line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14027877A JPS5473062A (en) 1977-11-22 1977-11-22 Thin-film mirror type optical branch line

Publications (1)

Publication Number Publication Date
JPS5473062A true JPS5473062A (en) 1979-06-12

Family

ID=15265048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14027877A Pending JPS5473062A (en) 1977-11-22 1977-11-22 Thin-film mirror type optical branch line

Country Status (1)

Country Link
JP (1) JPS5473062A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62206503A (en) * 1986-03-06 1987-09-11 Nec Corp Y-shaped optical confluencing and multiplexing circuit
JPS6348535A (en) * 1986-08-19 1988-03-01 Nippon Telegr & Teleph Corp <Ntt> Optical switch
JPS6363007A (en) * 1986-09-03 1988-03-19 Fujitsu Ltd Waveguide type branching circuit
JP2011064727A (en) * 2009-09-15 2011-03-31 Nitto Denko Corp Optical waveguide with light-emitting element and optical touch panel with the same
JP2011128321A (en) * 2009-12-17 2011-06-30 Nitto Denko Corp Optical waveguide with light emitting element, and optical touch panel with the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62206503A (en) * 1986-03-06 1987-09-11 Nec Corp Y-shaped optical confluencing and multiplexing circuit
JPS6348535A (en) * 1986-08-19 1988-03-01 Nippon Telegr & Teleph Corp <Ntt> Optical switch
JPS6363007A (en) * 1986-09-03 1988-03-19 Fujitsu Ltd Waveguide type branching circuit
JP2011064727A (en) * 2009-09-15 2011-03-31 Nitto Denko Corp Optical waveguide with light-emitting element and optical touch panel with the same
JP2011128321A (en) * 2009-12-17 2011-06-30 Nitto Denko Corp Optical waveguide with light emitting element, and optical touch panel with the same

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