JPS6442606A - Branch waveguide type optical multiplexer and demultiplexer - Google Patents

Branch waveguide type optical multiplexer and demultiplexer

Info

Publication number
JPS6442606A
JPS6442606A JP62198053A JP19805387A JPS6442606A JP S6442606 A JPS6442606 A JP S6442606A JP 62198053 A JP62198053 A JP 62198053A JP 19805387 A JP19805387 A JP 19805387A JP S6442606 A JPS6442606 A JP S6442606A
Authority
JP
Japan
Prior art keywords
waveguide
refractive index
demultiplexer
type optical
optical multiplexer
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
JP62198053A
Other languages
Japanese (ja)
Inventor
Hirohisa Sano
Katsuyuki Imoto
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62198053A priority Critical patent/JPS6442606A/en
Publication of JPS6442606A publication Critical patent/JPS6442606A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a waveguide type optical multiplexer and demultiplexer which can be manufactured easily, and has a steep wavelength separation characteristic, and also, whose loss is low, by adopting a laminated structure for a branch waveguide, and providing a tapered shape thereon. CONSTITUTION:Waveguides 1, 2 are made so as to have a refractive index being higher by DELTAn1 and DELTAn2 than a refractive index nsub of a substrate 3, and a refractive index ncead of a clad layer 4 is selected to the same as nsub or below. In this state, light beams 5, 6 which have been made incident from an input terminal are separated into the waveguides 1, 2 and outputted in accordance with wavelength by an operation of a tapered part 7 and a branch part 8. This branch part 8 is constituted so that the upper waveguide 2 and the lower waveguide 1 are shifted gradually. In such a way, the demultiplexing characteristic is improved (steepened), a radiation loss caused by discontinuity of the structure is reduced, and also, the manufacture can be easily executed.
JP62198053A 1987-08-10 1987-08-10 Branch waveguide type optical multiplexer and demultiplexer Pending JPS6442606A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62198053A JPS6442606A (en) 1987-08-10 1987-08-10 Branch waveguide type optical multiplexer and demultiplexer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62198053A JPS6442606A (en) 1987-08-10 1987-08-10 Branch waveguide type optical multiplexer and demultiplexer

Publications (1)

Publication Number Publication Date
JPS6442606A true JPS6442606A (en) 1989-02-14

Family

ID=16384749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62198053A Pending JPS6442606A (en) 1987-08-10 1987-08-10 Branch waveguide type optical multiplexer and demultiplexer

Country Status (1)

Country Link
JP (1) JPS6442606A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002311469A (en) * 2001-04-17 2002-10-23 Matsushita Electric Ind Co Ltd Optical waveguide path device, light source and optical device using the same
WO2004104660A1 (en) * 2003-05-22 2004-12-02 Lionix B.V. Device, assembly and methods for wavelength-dependent treatment of optical signals
JP2011102891A (en) * 2009-11-11 2011-05-26 Keio Gijuku Optical functional waveguide

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4839042A (en) * 1971-09-16 1973-06-08
JPS58211717A (en) * 1982-06-04 1983-12-09 Fujitsu Ltd Composite optical waveguide
JPS62121408A (en) * 1985-11-22 1987-06-02 Hitachi Ltd Module for optical wavelength multiplex transmission

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4839042A (en) * 1971-09-16 1973-06-08
JPS58211717A (en) * 1982-06-04 1983-12-09 Fujitsu Ltd Composite optical waveguide
JPS62121408A (en) * 1985-11-22 1987-06-02 Hitachi Ltd Module for optical wavelength multiplex transmission

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002311469A (en) * 2001-04-17 2002-10-23 Matsushita Electric Ind Co Ltd Optical waveguide path device, light source and optical device using the same
WO2004104660A1 (en) * 2003-05-22 2004-12-02 Lionix B.V. Device, assembly and methods for wavelength-dependent treatment of optical signals
NL1025226C2 (en) * 2003-05-22 2004-12-14 Lionix B V Device, assembly and methods for wavelength-dependent processing of optical signals.
JP2011102891A (en) * 2009-11-11 2011-05-26 Keio Gijuku Optical functional waveguide

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