GB2401196A - Connecting planar waveguides and optic fibres - Google Patents
Connecting planar waveguides and optic fibres Download PDFInfo
- Publication number
- GB2401196A GB2401196A GB0310125A GB0310125A GB2401196A GB 2401196 A GB2401196 A GB 2401196A GB 0310125 A GB0310125 A GB 0310125A GB 0310125 A GB0310125 A GB 0310125A GB 2401196 A GB2401196 A GB 2401196A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fibres
- ribbon fibre
- providing
- optical
- arrangement
- 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
- 239000000835 fiber Substances 0.000 claims abstract description 47
- 230000003287 optical effect Effects 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 238000003491 array Methods 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000004806 packaging method and process Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004100 electronic packaging Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3897—Connectors fixed to housings, casing, frames or circuit boards
-
- 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
- G02B6/30—Optical coupling means for use between fibre and thin-film device
-
- 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
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3664—2D cross sectional arrangements of the fibres
-
- 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
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
-
- 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
- G02B6/36—Mechanical coupling means
-
- 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
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3632—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means
- G02B6/3636—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means the mechanical coupling means being grooves
-
- 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
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3632—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means
- G02B6/3644—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means the coupling means being through-holes or wall apertures
-
- 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
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3648—Supporting carriers of a microbench type, i.e. with micromachined additional mechanical structures
- G02B6/3652—Supporting carriers of a microbench type, i.e. with micromachined additional mechanical structures the additional structures being prepositioning mounting areas, allowing only movement in one dimension, e.g. grooves, trenches or vias in the microbench surface, i.e. self aligning supporting carriers
-
- 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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
- G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
A packaged planar lightwave circuit comprises a planar lightwave circuit and at least one connector housing (502) arranged so that optical connection to the planar lightwave circuit is provided by inserting an optical connector into the connector housing (502). Optic fibre connection to the planar lightwave circuit may be provided by ribbon fibre subassemblies having their outer ends arranged in a ferrule connector (314/414). The circuit may thus be packaged in a package (500) having a wall (218) with connector housings (502) to receive the ferrules (314/414). A component comprises at least one ribbon optic fibre assembly 308, ends 310 of the optic fibres being arranged in a female connector 314. V grooves 304 are shown.
Description
24011 96 "Packaged planar lightwave circuit arrangements, corresponding
method of connection and component" * * * The invention relates to planar lightwave circuits (PLCs).
PLCs are widely used in dense wavelength multiplexing (DWDM) optical communication systems. An example of a PLC is an Array Waveguide Grating (AWG) which is used to combine the many, up to 80 or 160, l0 separate wavelengths onto a single fibre at one end of a link and to separate the wavelengths onto multiple fibres at the other end of the link.
The optical principles of operation of an AWG are described e.g. in an article by C. Dragone et al. "Integrated Optics NxN Multiplexer on Silicon", IEEE Photonics Technology Letters, Vol. 3, No. 10, October 1991, pages 896-9 and in US-A-5 002 350.
In order to be utilised in an optical communication system, AWGs and other PLCs must be packaged so that connection can conveniently be made to the optical communication system and so that the environment in which it is installed does not adversely affect the whole arrangement.
A typical prior art packaging of PLCs typically
consist of "pigLailing", namely attaching fibre pigtails to the input and output waveguides of the PLC, followed by enclosing the PLC in a hermetic package.
Many types of PLC, for example AWGs, require temperature stabilization and therefore are co-packaged with a thermoelectric cooler. For those PLCs that require electrical connections such as, for example, thermo- optical switches, the connections are made from the PLC to electrical feedthroughs in the package wall before the package is sealed.
Such prior art packaging is described e.g. by
Kato, K. et al. in "Packaging of large-scale planar lightwave circuits", IEEE Transactions on Components, Packaging and Manufacturing Technology, Part B: Advanced Packaging, Volume 21, Issue 2, 1998, Pages 121-129 and by Chau-Han Lee et al "Packaging of optical integrated circuits used in WDM optical communication systems", Advances in Electronic Packaging 1997, Proceedings of the Pacific Rim/ASME International lO Intersociety Electronic and Photonic Packaging Conference INTERpack /97, 1997, Page 689-693, Volume
Figure 1 shows a prior art packaged PLC 100, in
this example an AWG, with an input pigtail 102 fitted Is with a connector 104 and eight ribbon fibre outputs 106a to 106h, each containing eight fibres. The ribbon fibres are fanned out at branch points 108a to 108h into individual fibres llOaa to llOhh, which are terminated by 64 connectors 112aa to 112hh.
Figure 2 shows a detail of the internal construction of the packaged PLC. A corner portion of the PLC, designated 200, has a plurality of waveguides 202 which intersect an edge 204 of the PLC. Ribbon fibre subassemblies 206a, 206b, ... (hereinafter generally referred to as 206) are aligned and attached to the edge 204 of the PLC so that light can be transmitted with low loss between the waveguides 202 and the fibres 208 of the ribbon fibre subassemblies.
Each ribbon fibre subassembly 206 comprises a block 209 shown in isometric view in figure 3. The block 209 may be glass or ceramic or silicon and is provided with v-grooves 210 which receive fibre ends 212 of a ribbon fibre 214 and space them precisely to match the spacing of the waveguides 202.
As better appreciated in the ribbon fibre subassembly 206b (which is shown displaced from its final position aligned to the waveguides 202) an end face 216 of the ribbon fibre subassembly 206 is polished to ensure good optical contact between the end face 216 and the waveguide 202.
The ribbon fibre subassemblies 206 are anchored to the package wall 218 and the package is closed with a lid (not shown in the drawing).
The arrangement shown in the foregoing therefore makes the first connection to the PLC using ribbon fibres, comprising typically 4, 8 or 12 fibres in a single sheath, then splitting the ribbon into individual fibres at a convenient distance from the packaged PLC, each individual fibre being terminated with a connector.
Such an arrangement only marginally mitigates the basic disadvantage of this type of packaging, namely the very large number of pigtails, which must be handled during manufacture, shipping, installation, and maintenance of the packaged component. In practice, the space taken by the pigtailed, packaged PLC is dominated by the pigtails (this is clearly visible e.g. in figure 7 of the article by Kato et al. referred to in the foregoing) making efforts at further miniaturizing the PLC pointless.
The object of the present invention is to provide an improved arrangement dispensing with the drawbacks
of the prior art arrangement considered in the
foregoing.
According to the present invention, that object is achieved by means of a packaged planar lightwave circuit arrangement having the features set forth in the claims that follow. The invention also relates to a corresponding method of providing fibre connection and a component for use therein.
In brief, the invention provides a packaged PLC with no pigtails, wherein optical connections to the S packaged PLC are made by inserting optical connectors into receptacles mounted on the wall of the package.
Consequently, the PLC is much easier to handle during manufacture, shipping, installation and maintenance.
The invention will now described, by way of example only, by referring to the annexed figures of drawing, wherein:
- figures 1 to 3, related to the prior art, were
already described in the foregoing, IS - figure 4 shows a first embodiment of the arrangement disclosed herein, - figure 5 details one of the elements shown in figure 4, - figure 6 shows another embodiment of the arrangement disclosed herein, - figures 7 and 8 show details of certain components of the arrangement of figure 6, and - figure 9 shows a fully packaged PLC adopting the arrangement disclosed herein.
Figure 4 shows a detail of the internal construction of a PLC packaged according to a first embodiment of the arrangement disclosed herein.
In figure 4 (and figures 5 to 9, when applicable) parts identical or equivalent to those already described in connection with figures 1 to 3 were indicated with the same reference numbers.
While in the prior art arrangement considered in
the foregoing, optical connection to the waveguides 202 of the PLC 200 is made by ribbon fibre subassemblies 206, in the arrangement of figure 4 connection is made by a connector ferrule assembly 300 illustrated in detail in figure 5.
Essentially, a block 302 essentially similar to the block 209 of figure 3 is provided with v-grooves 304 adapted to receive first fibre ends 306 of fibres 308 and space those ends precisely to match the spacing of the waveguides 202.
The second ends of 310 of the fibres 308 are fixed into holes 312 in a ferrule 314. The ferrule may be an industry standard IEC 1754-7 MPO connector ferrule available from US Conec Ltd. of Hickory,NC or another miniature multi-fibre ferrule.
The ferrules 314 are mounted in the package wall 218. Conveniently, the line of the holes 312 in the ferrule(s) 314 is rotated by 90 with respect to the line of v-grooves 304 in order that the ferrules 314 can be closely spaced along the package wall 216. The package is closed with a lid (not shown) Figure 6 shows a detail of an internal construction of a PLC packaged according to an alternative embodiment of the arrangement shown herein.
Again, parts identical or equivalent to those already described in the foregoing were given the same reference numbers.
In the arrangement of figure 6, a fibre stub 402 has associated a ferrule 404 essentially similar to the ferrule 314 of figure 5 shown in more detail in figure 7 with fibres 406 which are fixed into holes 408 in the ferrule 404.
Coupling of light between the waveguides 202 and the fibres 406 in the ferrule 404 is performed by a waveguide lens array 410 and a fibre lens array 412.
The form of the lens arrays 410, 412 is illustrated in figure 8.
A substrate 414, which may be glass, silica or silicon, is provided with an array of lenses 416, each lens corresponding to a waveguide, if the lens array 410, or a fibre, if the lens array 412.
The lenses 416 may be refractive or diffractive microlenses.
In use, the waveguide lens array 410 is aligned and fixed to the waveguides 202 and the fibre lens arrays 512 is aligned and fixed to the fibre stub 402 lO such that light can be transmitted with low loss between the waveguides 202 and the fibres 406 of the fibre stub 502.
Preferably, the beam between the waveguide lens array 410 and the fibre lens array 412 is substantially l5 collimated.
Figure 9 shows a fully packaged PLC 500 with the ferrules 314 or 404 located in connector housing 502 mounted in the package wall 218. The connector housing 502 may conform to industry standard IEC 1754-7 for MPO connector receptacles or to another miniature multi-
fibre connector specification.
Thus a packaged PLC is provided which overcomes the basic disadvantages of the known type of packaging, namely the very large number of pigtails, which must be handled during manufacture, shipping, installation, and maintenance of the packaged component, by providing a packaged PLC which can be manufactured, shipped and installed before optical connection is conveniently made using standard patchcords, and if maintenance or replacement is required the patchcords can be disconnected from the packaged PLC, the packaged PLC maintained or replaced and the patchcords reconnected.
Of course, without prejudice to the underlying principles of the invention, the details and embodiments may vary, also significantly, with respect to what has been shown and described by way of example only without departing from the scope of the invention as defined in the annexed claims. Also, terms such as "optical", "light", "photosensitive", and the like are evidently used herein with the meaning currently allotted to those terms in fibre and integrated optics, being thus intended to apply to radiation including, in addition to visible light, e.g. also infrared and ultraviolet radiation.
Claims (22)
1. A packaged planar lightwave circuit comprising a planar lightwave circuit (200) and at least one connector housing (502) arranged so that optical connection to the planar lightwave circuit (200) is provided by inserting an optical connector into the connector housing (502).
2. The arrangement of claim 1, characterized in that it includes: - said planar lightwave circuit (200) including a plurality of waveguides (202), - at least one ribbon fibre subassembly (308) including a plurality of optical fibres having first ends (306), said at least one ribbon fibre subassembly (308) associated with said planar lightwave circuit (200) by aligning the first ends (306) of the fibres in said ribbon fibre subassembly (308) with respective ones of the waveguides of said plurality (202); said optical fibres in said ribbon fibre subassembly (308) having second ends (310) opposite said first ends (306), said second ends (310) of said fibres being arranged in a ferrule connector (314; 404) adapted for insertion in said at least one connector housing (502) .
3. The arrangement of claim 2, characterized in that said first ends (306) of said optical fibres in said ribbon fibre subassembly (308) are arranged in a given plane, while said second ends (310) of said fibres are arranged in a second plane substantially perpendicular said given plane.
4. The arrangement of either of claims 2 or 3, characterized in that said ribbon fibre subassembly (308) includes a spacing block (302) provided with regularly spaced seats for receiving said first ends (306) of said optical fibres.
5. The arrangement of claim 4, characterized in that said seats are vgrooves (304) in said block (302).
6. The arrangement of any of claims 2 to 5, characterized in that it includes a lens array (410, 412) in at least one position selected out of: - between said optical waveguides (202) and said first ends (306) of said fibres in said at least one ribbon fibre subassembly (308), and - at said second ends (310) of said fibres arranged in said ferrule connector (314; 404) .
7. The arrangement of claim 6, characterized in that it includes respective lens arrays (410, 412) at both said positions.
8. The arrangement of either of claims 6 or 7, characterized in that the lenses in said lens array (410, 412) are microlenses selected out of the group consisting of refractive micro lenses and diffractive micro lenses.
9. The arrangement of any of claims 6 to 8, characterized in that said lens array (410, 412) includes a substrate (414) comprised of a material selected out of the group consisting of glass, silica or silicon.
10. The arrangement of any of claims 2 to 9, characterized in that it includes: - a package (500) for said planar lightwave circuit, said package having a wall (218) with at least one connector housing (502) therein, and - a set of said ribbon fibre subassemblies (308) each having associated a respective ferrule (314; 504) in a set of ferrules, said ferrules (314; 404) arranged in said at least one connector housing (502) in said package wall (218) .
11. A method of providing fibre connection to a planar lightwave circuit (200) including a plurality of waveguides (202), the method including the steps of: - providing at least one ribbon fibre subassembly (308) including a plurality of optical fibres having first ends (306) to be connected to said waveguides (202), and associating said at least one ribbon fibre subassembly (308) to said planar lightwave circuit (200) by aligning the first ends (306) of the fibres in said ribbon fibre subassembly (308) with respective ones of the waveguides of said plurality (202), characterized in that it includes the steps of: - providing said optical fibres in said ribbon fibre subassembly (308) with second ends (310) opposite said first ends (306), and arranging said second ends ( 310) of said fibres in a ferrule connector (314; 404).
12. The method of claim 11, characterized in that it includes the steps of: - arranging said first ends (306) of said optical fibres in said ribbon fibre subassembly (308) in a given plane, - arranging said second ends (310) of said fibres in a second plane substantially perpendicular said given plane.
13. The method of either of claims 11 or 12, characterized in that it includes the step of including in said ribbon fibre subassembly (308) a spacing block (3 02) provided with regularly spaced seats for receiving said first ends (306) of said optical fibres.
14. The method of claim 13, characterized in that it includes the step of providing said seats in the form of v-grooves (304) in said block (302).
15. The method of any of the previous claim 11 to S 14, characterized in that it includes the step of providing a lens array (410, 412) in at least one position selected out of: - between said optical waveguides (202) and said first ends (306) of said fibres in said at least one lO ribbon fibre subassembly (308), and - at said second ends (310) of said fibres arranged in said ferrule connector (314; 404) .
16. The method of claim 15, characterized in that it includes the step of providing respective lens arrays (410, 412) at both said positions.
17. The method of either of claims 15 or 16, characterized in that it includes the steps of providing the lenses in said lens array (410, 412) as microlenses selected out of the group consisting of refractive microlenses and diffractive microlenses.
18. The method of any of claims 15 to 17, characterized in that it includes the step of providing said lens array (410, 412) in a substrate (414) comprised of a material selected out of the group consisting of glass, silica or silicon.
19. The method of any of the previous claims 11 to 18, characterized in that it includes the steps of: - providing a package (500) for said planar lightwave circuit, said package having a wall (218), - providing a set of said ribbon fibre subassemblies (308) each having associated a respective ferrule (314; 504) in a set of ferrules, - providing at least one connector housing (502) in said package wall (218), and - arranging the ferrules (314; 404) of said set in said at least one connector housing (502).
20. A component for carrying out the method of any of claims 11 to 19, the component including said at least one ribbon fibre subassembly (308) including a plurality of optical fibres having first ends (306), wherein said optical fibres in said ribbon fibre subassembly (308) have second ends (310) opposite said first ends (306), said second ends (310) of said fibres i being arranged in a ferrule connector (314; 404).
21. The component of claim 20, characterized in that it includes a spacing block (302) provided with regularly spaced seats for receiving said first ends (306) of said optical fibres.
22. The component of claim 21, characterized in that said seats are vgrooves (304) in said block t (302) .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0310125A GB2401196B (en) | 2003-05-02 | 2003-05-02 | Packaged planar lightwave circuit arrangements corresponding method of connection and component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0310125A GB2401196B (en) | 2003-05-02 | 2003-05-02 | Packaged planar lightwave circuit arrangements corresponding method of connection and component |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0310125D0 GB0310125D0 (en) | 2003-06-04 |
| GB2401196A true GB2401196A (en) | 2004-11-03 |
| GB2401196B GB2401196B (en) | 2007-02-07 |
Family
ID=9957392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0310125A Expired - Fee Related GB2401196B (en) | 2003-05-02 | 2003-05-02 | Packaged planar lightwave circuit arrangements corresponding method of connection and component |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2401196B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60200210A (en) * | 1984-03-23 | 1985-10-09 | Matsushita Electric Works Ltd | Photocoupler |
| EP0277390A1 (en) * | 1987-01-15 | 1988-08-10 | Koninklijke Philips Electronics N.V. | Assembly comprising a planar optical circuit and an optical fibre coupled thereto |
| EP0458608A1 (en) * | 1990-05-22 | 1991-11-27 | BICC Public Limited Company | Multi-part optical fibre connectors |
| EP0591941A1 (en) * | 1992-10-09 | 1994-04-13 | The Furukawa Electric Co., Ltd. | An optical waveguide component and a manufacturing method therefor |
| EP0606552A1 (en) * | 1993-01-05 | 1994-07-20 | Motorola, Inc. | Modular optical waveguide and method for making |
| GB2286693A (en) * | 1994-02-22 | 1995-08-23 | Du Pont | Flat optical waveguide and/or optical fibre connectors and their manufacture |
| US5539848A (en) * | 1995-05-31 | 1996-07-23 | Motorola | Optical waveguide module and method of making |
| US5706378A (en) * | 1995-04-07 | 1998-01-06 | The Furukawa Electric Co., Ltd. | Method of production of optical waveguide module |
| JP2000298219A (en) * | 1999-04-14 | 2000-10-24 | Fujikura Ltd | Awg module |
| US20030002801A1 (en) * | 2001-06-22 | 2003-01-02 | Bookham Technology Plc | System |
-
2003
- 2003-05-02 GB GB0310125A patent/GB2401196B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60200210A (en) * | 1984-03-23 | 1985-10-09 | Matsushita Electric Works Ltd | Photocoupler |
| EP0277390A1 (en) * | 1987-01-15 | 1988-08-10 | Koninklijke Philips Electronics N.V. | Assembly comprising a planar optical circuit and an optical fibre coupled thereto |
| EP0458608A1 (en) * | 1990-05-22 | 1991-11-27 | BICC Public Limited Company | Multi-part optical fibre connectors |
| EP0591941A1 (en) * | 1992-10-09 | 1994-04-13 | The Furukawa Electric Co., Ltd. | An optical waveguide component and a manufacturing method therefor |
| EP0606552A1 (en) * | 1993-01-05 | 1994-07-20 | Motorola, Inc. | Modular optical waveguide and method for making |
| GB2286693A (en) * | 1994-02-22 | 1995-08-23 | Du Pont | Flat optical waveguide and/or optical fibre connectors and their manufacture |
| US5706378A (en) * | 1995-04-07 | 1998-01-06 | The Furukawa Electric Co., Ltd. | Method of production of optical waveguide module |
| US5539848A (en) * | 1995-05-31 | 1996-07-23 | Motorola | Optical waveguide module and method of making |
| JP2000298219A (en) * | 1999-04-14 | 2000-10-24 | Fujikura Ltd | Awg module |
| US20030002801A1 (en) * | 2001-06-22 | 2003-01-02 | Bookham Technology Plc | System |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2401196B (en) | 2007-02-07 |
| GB0310125D0 (en) | 2003-06-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
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