JPS6442606A - Branch waveguide type optical multiplexer and demultiplexer - Google Patents
Branch waveguide type optical multiplexer and demultiplexerInfo
- 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
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.
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)
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)
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 |
-
1987
- 1987-08-10 JP JP62198053A patent/JPS6442606A/en active Pending
Patent Citations (3)
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)
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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