JPS5471653A - Waveguide type optical branching filter - Google Patents
Waveguide type optical branching filterInfo
- Publication number
- JPS5471653A JPS5471653A JP13784277A JP13784277A JPS5471653A JP S5471653 A JPS5471653 A JP S5471653A JP 13784277 A JP13784277 A JP 13784277A JP 13784277 A JP13784277 A JP 13784277A JP S5471653 A JPS5471653 A JP S5471653A
- Authority
- JP
- Japan
- Prior art keywords
- waveguide
- propagation
- refractive index
- wavelength
- type optical
- 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.)
- Granted
Links
Abstract
PURPOSE:To eliminate instability of optical system derived from vibrations, by selecting the refractive index so that the wavelength dependency of propagation constant of first wave guide differs from that of second waveguide. CONSTITUTION:Propagation lights of wavelength lambda0 and lambda1 are inputted from the left side end 15 of waveguide, and the propagation light of wavelength lambda0 only is bonded. The propagation light of wavelength lambda0 is also bonded in the part Z = 0 - e of wavegide II, and this propagation light reciprocates between the two waveguides. The waveguide layer 10 in waveguide II is tapered in the y-direction, and the equivalent refraction of waveguide II increases as the film thickness Wd of the waveguide layer 10 grows thicker. When the equivalent refractive index of the waveguide II changes, propagation constant beta2 also changes, but by changing the equivalent refractive index slightly, mismatching DELTAbeta of the propagation constant may be kept almost at zero.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13784277A JPS5471653A (en) | 1977-11-18 | 1977-11-18 | Waveguide type optical branching filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13784277A JPS5471653A (en) | 1977-11-18 | 1977-11-18 | Waveguide type optical branching filter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5471653A true JPS5471653A (en) | 1979-06-08 |
JPS5722363B2 JPS5722363B2 (en) | 1982-05-12 |
Family
ID=15208083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13784277A Granted JPS5471653A (en) | 1977-11-18 | 1977-11-18 | Waveguide type optical branching filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5471653A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4637684A (en) * | 1981-07-31 | 1987-01-20 | Canon Kabushiki Kaisha | Method of making an optical coupler device utilizing volatile liquid to achieve optical contact |
JPS62121408A (en) * | 1985-11-22 | 1987-06-02 | Hitachi Ltd | Module for optical wavelength multiplex transmission |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3957341A (en) * | 1974-09-03 | 1976-05-18 | The United States Of America As Represented By The Secretary Of The Navy | Passive frequency-selective optical coupler |
-
1977
- 1977-11-18 JP JP13784277A patent/JPS5471653A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3957341A (en) * | 1974-09-03 | 1976-05-18 | The United States Of America As Represented By The Secretary Of The Navy | Passive frequency-selective optical coupler |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4637684A (en) * | 1981-07-31 | 1987-01-20 | Canon Kabushiki Kaisha | Method of making an optical coupler device utilizing volatile liquid to achieve optical contact |
JPS62121408A (en) * | 1985-11-22 | 1987-06-02 | Hitachi Ltd | Module for optical wavelength multiplex transmission |
Also Published As
Publication number | Publication date |
---|---|
JPS5722363B2 (en) | 1982-05-12 |
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