JPS6437507A - Waveguide type optical interferometer circuit - Google Patents
Waveguide type optical interferometer circuitInfo
- Publication number
- JPS6437507A JPS6437507A JP19423487A JP19423487A JPS6437507A JP S6437507 A JPS6437507 A JP S6437507A JP 19423487 A JP19423487 A JP 19423487A JP 19423487 A JP19423487 A JP 19423487A JP S6437507 A JPS6437507 A JP S6437507A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- coupling
- waveguides
- waveguide
- length
- 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
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Optical Integrated Circuits (AREA)
Abstract
PURPOSE:To obtain a circuit which has a superior quenching ratio and small excessive loss by using a directional coupler of what is called (3X3) constitution which have coupling optical waveguides arranged nearby both ends of input/ output optical waveguides as an optical coupler. CONSTITUTION:The coupling optical waveguides 2a and 2b are arranged closely about an input/output optical waveguide 3a to specific length (l). The coupling waveguides 2a and 2b in the optical coupling part 22 of length (l) are arranged symmetrically about the center axis 23 of the optical waveguide 3a. When signal light which is guided in the optical waveguide 3a reaches the optical coupling part 22, evanescent coupling from the center optical waveguide to both-side optical waveguides is generated and when the length (l) is set properly (complete coupling length), the signal light of the center optical waveguide all travels to both-side optical waveguides before reaching the exit of the optical coupling part 22, thereby performing desired optical coupler operation. Consequently, the waveguide type optical interferometer circuit whose loss characteristics and quenching characteristics are both excellent is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19423487A JPS6437507A (en) | 1987-08-03 | 1987-08-03 | Waveguide type optical interferometer circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19423487A JPS6437507A (en) | 1987-08-03 | 1987-08-03 | Waveguide type optical interferometer circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6437507A true JPS6437507A (en) | 1989-02-08 |
Family
ID=16321201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19423487A Pending JPS6437507A (en) | 1987-08-03 | 1987-08-03 | Waveguide type optical interferometer circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6437507A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0339905A (en) * | 1989-07-07 | 1991-02-20 | Nippon Telegr & Teleph Corp <Ntt> | Waveguide type optical branching element |
JPH03213829A (en) * | 1989-02-07 | 1991-09-19 | Nippon Telegr & Teleph Corp <Ntt> | Waveguide type optical branching element operating at wide-wavelength-range |
US7085446B2 (en) | 2002-04-19 | 2006-08-01 | Sumitomo Electric Industries, Ltd. | Optical multi/demultiplexer |
-
1987
- 1987-08-03 JP JP19423487A patent/JPS6437507A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03213829A (en) * | 1989-02-07 | 1991-09-19 | Nippon Telegr & Teleph Corp <Ntt> | Waveguide type optical branching element operating at wide-wavelength-range |
JPH0339905A (en) * | 1989-07-07 | 1991-02-20 | Nippon Telegr & Teleph Corp <Ntt> | Waveguide type optical branching element |
US7085446B2 (en) | 2002-04-19 | 2006-08-01 | Sumitomo Electric Industries, Ltd. | Optical multi/demultiplexer |
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