WO2003005090A1 - Device for positioning an optical fibre - Google Patents
Device for positioning an optical fibre Download PDFInfo
- Publication number
- WO2003005090A1 WO2003005090A1 PCT/EP2002/006704 EP0206704W WO03005090A1 WO 2003005090 A1 WO2003005090 A1 WO 2003005090A1 EP 0206704 W EP0206704 W EP 0206704W WO 03005090 A1 WO03005090 A1 WO 03005090A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fiber
- light
- optical component
- optical
- carrier
- Prior art date
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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4228—Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements
- G02B6/423—Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements using guiding surfaces for the alignment
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
Definitions
- the invention relates! an arrangement for positioning an optical fiber relative to an optical component equipped with an active surface, with which light is transmitted from the light-conducting core and a fiber surrounding the same to the component or is coupled into the fiber by the component.
- the optical component which is designed as a semiconductor circuit in modern technology, can be designed as a receiver or a transmitter.
- a receiver for example, a photodiode with an associated amplifier is used.
- a laser diode with a driver circuit can be used for the optical component.
- the respective optical component has an active surface with a predetermined size for the reception or the transmission of light. The frequency of the data or signals to be transmitted is also important for their measurement.
- the fibers are positioned so that their core, which has a diameter of 9 ⁇ m, for example, lies with its end face as close as possible to the active face of the optical component.
- the relative position of fibers and active areas is not so critical if the optical component is a receiving diode because the active areas are sufficiently large.
- an optimal position is determined in each case active adjustment set. If the optical component is a transmitter, lenses are usually also installed between the active surfaces and the fibers or fibers with a lens head are used.
- the active area of the optical components must be smaller in order to avoid excessive capacities in the same. Such capacities have to be as small as possible so that the necessary electrical recharges can be carried out at a sufficiently high speed.
- the previous technology for coupling fibers and optical components is not very suitable for this application.
- the invention has for its object to design the arrangement described above so that an optimal coupling between the active surface of an optical component and an optical fiber can be achieved in a simple manner.
- optical fiber is arranged in a rectilinear groove of a flat carrier consisting of a semiconductor material, which also carries the optical component,
- That the channel begins at an edge of the beam and ends at an end face in the course thereof
- That the end face is designed as a light reflecting, flat mirror surface, which extends at an acute angle to the axis of the fiber lying in the groove, and
- optical component is positioned with its active surface in the immediate vicinity of the mirror surface, that after reflection on the same, light guided by the fiber falls on the active surface or light emanating from the optical component is coupled into the core of the fiber.
- Troughs for receiving an optical fiber can be manufactured with great accuracy in the carrier made of semiconductor material, just like the optical fibers themselves. This also applies to the end face formed in the finished arrangement as a mirror surface at the end of a trough.
- the optical component can also be positioned with great accuracy on the carrier so that its active surface is in the correct position in the immediate vicinity of the mirror surface. Light reflected from the same thus strikes by the shortest route to the active surface of the optical component. Light emanating from the same is coupled into the fiber in the shortest possible way.
- a semiconductor material is used for the carrier, on which at least one further electronic circuit is attached.
- Fig. 1 shows schematically a circuit for receiving optical signals.
- Fig. 2 also schematically shows an optical component.
- Fig. 3 shows an arrangement according to the invention also in a schematic representation.
- FIG. 4 shows an end view of the arrangement according to FIG. 3.
- Fig. 5 shows a detail in an enlarged view.
- FIG. 6 shows another embodiment compared to FIG. 5.
- Fig. 7 shows a further supplemented arrangement.
- the photodiode 1 has as a light receiver a photodiode 1, for example a PIN diode, onto which the light of a signal stream transmitted via an optical fiber 2 falls.
- An amplifier 3 for electrical signals is connected to the photodiode 1 operating as an opto / electrical converter, by means of which the signals supplied by the photodiode 1 are amplified into signals which can be processed further.
- the bias voltage required for photodiode 1 is denoted by U B.
- the photodiode 1 consists of semiconductor material, such as gallium arsenide or indium phosphide.
- An active surface 4 and two electrical contacts 5 and 6, to which the amplifier 3 can be connected, for example, are located on the semiconductor material.
- At least one groove 8 is first produced in a flat, plate-shaped carrier 7 made of semiconductor material.
- the gutter 8 is straight and open. It begins at an edge 9 of the carrier 7 and ends in the course of the same at an end face 1 0.
- the end face 1 0 runs at an acute angle a to the axis of a fiber 2 located in the groove 8.
- the angle can be as an acute angle a at Create the groove 8 as a so-called V-groove (V-groove) by etching through the orientation of the crystals of the semiconductor material of the carrier 7, which consists for example of gallium arsenide or indium phosphide.
- the end face 1 0 is mirrored after completion of the channel 8.
- a metal can be evaporated onto the end face 10.
- gold is used as the metal. Light striking the mirror surface thus generated is reflected by the latter.
- the optical fiber 2 consists of a light-conducting core 1 1, which has a diameter of 9 ⁇ m, for example, and a jacket 12 surrounding the core 1 1, which has an outside diameter of, for example, 125 ⁇ m.
- Core 1 1 and jacket 12 have different refractive indices.
- the angle a of the end face 1 0 is expediently chosen such that light guided by the core 1 1 emerges from the fiber 2 in the shortest possible way after reflection on the mirror surface and is not reflected back into the core 1 1 if possible. With a deviation required in this sense, it is expediently in the vicinity of 45 °. If, in an advantageous embodiment, the end of the fiber 2 according to FIG. 6 is “sharpened” or arched outward in the axial direction, the distance between the mirror surface and the core 11 of the fiber 2 can be shortened without the reflection on the It can be achieved that the light to be transmitted is focused more sharply.
- the groove 8 attached in the carrier 7 is, for example, V-shaped. It is preferably precisely matched to the dimensions of the fiber 2 so that it is guided exactly in the carrier 7.
- the fiber 2 is appropriately attached in the groove 8 that . it is just below the surface of the carrier 7. It can then be inserted into the groove 8 in the longitudinal direction thereof, without the possibly already installed one Photodiode 1 to be hindered. In the end position, the fiber 2 then lies as close as possible to the mirror surface and just below the photodiode 1. This is positioned in the finished arrangement on the carrier 7 so that its active surface 4 lies at the point at which the light reflected by the end surface 1 0 strikes.
- the carrier 7 consisting of semiconductor material can be provided with an electronic circuit 13 indicated by dashed lines, which is advantageously an amplifier. Further electronic circuits can also be attached to the carrier 7.
- the photodiode 1 is positioned with its active surface 4 above the reflecting mirror surface of the carrier 7. Their contacts 5 and ⁇ are connected in the shortest possible way to corresponding contacts of the circuit 13.
- Such short, electrically conductive connections can also be used in the carrier 7 made of semiconductor material to and between other electronic circuits of the same. A disturbance or distortion in the transmission of signals by the conductive connections can be largely excluded.
- the arrangement for the direction of transmission of signal currents from the optical fiber 2 to the photodiode 1 is described above.
- the arrangement can also be used for the opposite direction of transmission.
- a transmitter is then used as the optical component.
- a suitable transmitter is, for example, a laser diode.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02762291A EP1402301A1 (en) | 2001-06-30 | 2002-06-18 | Device for positioning an optical fibre |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10131868.5 | 2001-06-30 | ||
DE2001131868 DE10131868A1 (en) | 2001-06-30 | 2001-06-30 | Arrangement for positioning an optical fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003005090A1 true WO2003005090A1 (en) | 2003-01-16 |
Family
ID=7690233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/006704 WO2003005090A1 (en) | 2001-06-30 | 2002-06-18 | Device for positioning an optical fibre |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1402301A1 (en) |
DE (1) | DE10131868A1 (en) |
WO (1) | WO2003005090A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7576037B2 (en) | 2005-11-18 | 2009-08-18 | Mei Technologies, Inc. | Process and apparatus for combinatorial synthesis |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4702556A (en) * | 1983-08-22 | 1987-10-27 | Hitachi, Ltd. | Method of assembling a light emitting device with an optical fiber |
EP0987769A2 (en) * | 1998-09-18 | 2000-03-22 | Sumitomo Electric Industries, Ltd. | Photodiode module |
US6115521A (en) * | 1998-05-07 | 2000-09-05 | Trw Inc. | Fiber/waveguide-mirror-lens alignment device |
US6132107A (en) * | 1996-09-30 | 2000-10-17 | Nec Corporation | Light-receiving module and method for fabricating a same |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3202425B2 (en) * | 1993-07-12 | 2001-08-27 | 株式会社リコー | Light receiving module |
-
2001
- 2001-06-30 DE DE2001131868 patent/DE10131868A1/en not_active Withdrawn
-
2002
- 2002-06-18 EP EP02762291A patent/EP1402301A1/en not_active Withdrawn
- 2002-06-18 WO PCT/EP2002/006704 patent/WO2003005090A1/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4702556A (en) * | 1983-08-22 | 1987-10-27 | Hitachi, Ltd. | Method of assembling a light emitting device with an optical fiber |
US6132107A (en) * | 1996-09-30 | 2000-10-17 | Nec Corporation | Light-receiving module and method for fabricating a same |
US6115521A (en) * | 1998-05-07 | 2000-09-05 | Trw Inc. | Fiber/waveguide-mirror-lens alignment device |
EP0987769A2 (en) * | 1998-09-18 | 2000-03-22 | Sumitomo Electric Industries, Ltd. | Photodiode module |
Non-Patent Citations (1)
Title |
---|
See also references of EP1402301A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7576037B2 (en) | 2005-11-18 | 2009-08-18 | Mei Technologies, Inc. | Process and apparatus for combinatorial synthesis |
Also Published As
Publication number | Publication date |
---|---|
DE10131868A1 (en) | 2003-01-16 |
EP1402301A1 (en) | 2004-03-31 |
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