JPS57120904A - Optical attenuator - Google Patents
Optical attenuatorInfo
- Publication number
- JPS57120904A JPS57120904A JP56007362A JP736281A JPS57120904A JP S57120904 A JPS57120904 A JP S57120904A JP 56007362 A JP56007362 A JP 56007362A JP 736281 A JP736281 A JP 736281A JP S57120904 A JPS57120904 A JP S57120904A
- Authority
- JP
- Japan
- Prior art keywords
- gap
- lens
- refractive index
- face
- light
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2817—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using reflective elements to split or combine optical signals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Optical Couplings Of Light Guides (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
PURPOSE:To obtain a simple, small-sized, light-weight, inexpensive, high-attenuation precision, and stable optical attenuator, by interposing a medium of a low refractive index in the gap between planes of a pair of semicylindrical refractive index distributed lenses which face to each other through the gap and changing the gap to use end faces of lenses as input and output terminals. CONSTITUTION:A medium of a low refractive index such as silicone oil is interposed in a gap 2 between a pair of semicylindrical refractive index distributed lenses 1a and 3a. A lens 1 is fixed to a box body 9 through a supporting member 8, and the lens 3a is connected to a feed machanism 10 for gap adjustment through a supporting member 11. Optical fibers 4-6 are fixed to the incident end face and the emission end face of the lens and the emission end face of the lens 3a by an adhesive 7. An incident light Pi from the optical fiber 4 is attenuated, and an attenuated reflection light Pr and an attenuated transmission light are taken out from optical fibers 5 and 6. Thus, an optical attenuator is obtained which is simple, small-sized, light-weight, inexpensive, and high-attenuation precision and is operated stably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56007362A JPS57120904A (en) | 1981-01-21 | 1981-01-21 | Optical attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56007362A JPS57120904A (en) | 1981-01-21 | 1981-01-21 | Optical attenuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57120904A true JPS57120904A (en) | 1982-07-28 |
Family
ID=11663846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56007362A Pending JPS57120904A (en) | 1981-01-21 | 1981-01-21 | Optical attenuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57120904A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04331910A (en) * | 1991-05-02 | 1992-11-19 | Hamamatsu Photonics Kk | Beam splitter |
-
1981
- 1981-01-21 JP JP56007362A patent/JPS57120904A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04331910A (en) * | 1991-05-02 | 1992-11-19 | Hamamatsu Photonics Kk | Beam splitter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0204493A3 (en) | Fibre optic coupler | |
| CA2056925A1 (en) | Optical fiber amplifier and coupler | |
| AU572179B2 (en) | Fibre optic switchable coupler | |
| JPS56161506A (en) | Attenuator for optical fiber transmission line | |
| JPS57120904A (en) | Optical attenuator | |
| JPS57158604A (en) | Light beam converting adaptor | |
| JPS56147106A (en) | Light variable attenuator | |
| JPS566203A (en) | Photoswitch | |
| JPS56147111A (en) | Photocoupler | |
| GB1282511A (en) | An optical coupling arrangement for fibrous light guide elements | |
| JPS5525060A (en) | Photo artificial line | |
| JPS57211125A (en) | Light wavelength converting element | |
| JPS57177104A (en) | Optical demultiplexer | |
| JPS5557804A (en) | Optical branching and coupling device | |
| JPS57174946A (en) | Bidirectional optical transmission method | |
| JPS5764708A (en) | Optical filter | |
| JPS57169713A (en) | Optical connector | |
| JPS575009A (en) | Optical distributor | |
| JPS5672403A (en) | Polarizer | |
| JPS5674204A (en) | Light branching circuit | |
| JPS5727215A (en) | Aperture number converting convex lens and optical transmission line using said lens | |
| JPS5515107A (en) | Axial aligning method of lens | |
| JPS5565905A (en) | Optical branching or combining device | |
| JPS56113103A (en) | Light distributor | |
| JPS57198425A (en) | Optical branching and coupling circuit |