CN1176006A - Protective housing for integrated optical component - Google Patents
Protective housing for integrated optical component Download PDFInfo
- Publication number
- CN1176006A CN1176006A CN96191994A CN96191994A CN1176006A CN 1176006 A CN1176006 A CN 1176006A CN 96191994 A CN96191994 A CN 96191994A CN 96191994 A CN96191994 A CN 96191994A CN 1176006 A CN1176006 A CN 1176006A
- Authority
- CN
- China
- Prior art keywords
- outer cover
- cavity
- capping
- pedestal
- optical fiber
- 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
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Images
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
- G02B6/30—Optical coupling means for use between fibre and thin-film device
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The optical component [4] consists of a substrate made of an optical material that carries at least one integrated waveguide and that is extended beyond the said substrate by optical fibers exiting from the protective housing [1] [3] for the component. The housing defines a closed internal cavity [2] in which the said component [4] is placed. In accordance with the invention, the said cavity [2] is sized such as to hold the component [4] with a certain amount of play [ji] that prevents any significant transmission of stresses between the housing [1] [3] and the component [4].
Description
The present invention relates to a kind of protection outer cover of optical element; relate in particular to a kind of like this outer cover; this outer cover is designed to protect the element that is made of a kind of optical material substrate; substrate is loaded with an integrated waveguide at least; and waveguide is arrived beyond the described substrate via the optic fibre extension that stretches out outer cover; outer cover defines the internal cavities of a sealing, in order to place described element.
Particularly; this class outer cover can be used to protect integrated optical element; such as coupling mechanism or the multiplexer relevant with the optical fiber that is used for remote transmission numeral or analog information, the type of information is the type of for example using in using such as audio frequency, video or data processing etc.Integrated optical element is tabular or strip, is made by crystalline material or noncrystal optical material (for example glass), is embedded in by the formed waveguide of for example ions diffusion under the surface of plate or bar.The two ends of waveguide link to each other with optical fiber, and optical fiber then stretches out outside the outer cover of this element of protection.
Therefore this class component rapid wear must effectively be protected, and avoids making its fragmentation because of applying mechanical stress and constraint, and avoids because of other physics or chemical phenomenon it being damaged, and particularly variation of temperature or contact are by the water of there was dampness in the air generation.For this reason, at present with component package in the rigid container of sealing, fill up the interior space that is stayed by element of outer cover with light solidity or thermoset resin, thereby the air that prevents humid air or contain other oxious component enters.Should be appreciated that, when a different set of and whole continuous material stands bigger temperature variation (for example being applied to the temperature that testing standard adopted of these elements), because of the different stress that thermal expansion produced and constraint can make the element fragmentation that is positioned at outer cover.
In order to overcome this shortcoming, No. 106116 suggestion of European patent is installed in element on the support that is positioned at outer cover, and support is by the material with the expansion coefficient that equates with glass, such as being called INVAR
TMIron-nickel alloy make, and the tubular type of this support and same material screen (tubular screen) links to each other.The result forms a quite complicated protection structure, and the protection structure contains a large amount of parts to be assembled that have.
The protection outer cover that the purpose of this invention is to provide a kind of integrated optical element; can prevent that to the design of this outer cover (particularly by caused stress of different thermal expansions and constraint) damages or destroy this element with effect of contraction for the stress that produces because of a variety of causes; this protection outer cover still has simple structure simultaneously, and can assemble automatically and seal.
Read following description and will know these purposes of the present invention and other purpose; these and other objects can realize by a kind of protection outer cover of optical element; optical element is made of an optical material substrate; substrate comprises an integrated waveguide at least; and waveguide is arrived beyond the described substrate via the optic fibre extension that stretches out outer cover; outer cover defines the internal cavities of a sealing; in order to place described element; it should be noted that; the big I of the described cavity of this outer cover is held described element, and its gap value can prevent stress; strain or pressure are done effectively to transmit between outer cover and element.
Owing to there is this gap value, with regard to by operation, vibration stilt and web joint etc. or be applied to by different thermal expansions with regard to the transmission of any mechanical stress on the outer cover, outer cover and optical element are not coupled or isolate.Therefore, this structural defence that is not coupled breakable element be not subjected to these can destroy or damage the effect of the stress of element.
According to a preferred embodiment of the present invention, outer cover comprises a compliant member at least, and compliant member gently is pressed between the surface and the cavity in the outer cover of two oriented-components, so that prevent any possible vibration of element in cavity.
Read following description and observe accompanying drawing, with clear further feature and advantage, wherein according to outer cover of the present invention:
Fig. 1 is the part longitudinal sectional drawing according to outer cover of the present invention, and the integrated optical element that it is protected is housed in the outer cover;
Fig. 2 is the partial view of outer cover shown in Figure 1 bottom, and this view obtains along the II-II profile line among Fig. 1;
Fig. 3 is a skeleton view, shows the watertight contiguous block that forms the part outer cover according to the present invention;
Figure 4 and 5 are the transverse cross-sectional view according to outer cover of the present invention, the situation after showing pre-assembled respectively and assembling.
Referring now to the Fig. 1 in the accompanying drawing and Fig. 2, provide fragmentary cross-sectional view among the figure according to outer cover of the present invention.Outer cover is rectangular, and generally with respect to the P plane symmetry, therefore as showing in these figure, outer cover has two ends.
Outer cover comprises that mainly one contains the pedestal (1) of cavity (2), and cavity is generally parallelepipedon and seals with capping (3).Capping comprises a recessed portion (3
1), be suitable for holding the self-adhesive label that identifies the element of adorning in the outer cover.The shape of the cavity (2) in the pedestal is made and can be held the complementary usually integrated optical element of a shape.This element is to use the substrate of making such as optical materials such as glass or crystalline materials to produce with traditional method.By for example waveguide (6 of ions diffusion method manufacturing
1) (6
2) (6
3) wait the beneath (see figure 2) that is embedded in element upper surface (5).Each end of waveguide and nuditing fiber (7
1) (7
2) (7
3) end that waits links to each other, optical fiber before stretching out outer cover in two watertight contiguous blocks (9
1) (9
2) between protected seam (8
1) (8
2) (8
3) wait covering.With a cementing agent (10
1) every optical fiber is linked to each other with corresponding waveguide, and another bigger cementing agent (11) has guaranteed the mechanical fixation between substrate and the optical fibre set.
For example the 2nd, 674, No. 003 visible this integrated optical element of french patent application of submitting to by the applicant is known.This element can be made of coupling mechanism or multiplexer with M input end and N output terminal, and in this case, the fiber count of stretching out outer cover one end is general different with the fiber count of stretching out the same outer cover other end.
According to a key property of the present invention, the size that is formed at the cavity (2) in the outer cover can receiving element (4), its mechanical clearance amount can prevent on the one hand that stress from effectively transmitting between pedestal (1) and outer cover capping (3), can prevent also that on the other hand stress from transmitting between pedestal (1) and integrated optical element (4).Therefore, because element is placed in the cavity (2) simply, do not need to fix with cementing agent, so element does not constitute the outer cover part of the whole, so when temperature changes, these two element free expansions mutually, thus avoided the stress that is caused by the difference expansion that can damage or destroy element is applied on the element.
The structure that is not coupled allows to select the building material of a kind of most suitable material as outer cover from certain viewpoint, for example, and from viewpoint shock-resistant or collision, perhaps owing to do not need to consider (in fact) its thermal expansivity during molded outer cover.Therefore, for example can select the product made by a kind of liquid crystal polymer of having filled glass fibre, such as in HOECHST AG and Hoechst Celanese company products catalogue with the product of VECTRAA 130 names, or polycarbonate.
The required gap value of the structure that is not coupled can be arranged in element around.For example, between the surface at two ends and outer cover, provide a certain gap value (j at two of element
1), and between element and capping (3), provide different gap value (j
2) (see figure 1), and two other gap value (j is provided between aspectant vertical surface
3) and (j
4) (see figure 2).As representation feature but nonrestrictive example, for the element that occupies 50 * 5 * 5 millimeters spaces, each gap value (j
i) can be approximately 0.3 millimeter magnitude.
Comprise the problem that absorbs different heat expansion although the existence of these gap values can solve, in some cases, for example because the support that connects outer cover is applied result due to the periodic stress, their allow element in the outer cover internal vibration.
According to a preferred embodiment of the present invention, by a compliant member is provided in the outer cover cavity at least, just can prevent these vibrations, the shape of compliant member should be able to be crushed between the wall relative with of cavity of a surface of element, the size of pressure should be enough big, so that resist any initiation to vibration of element, but also enough little, to prevent that the suffered mechanical stress of outer cover from rebuliding transmission path, prevent that perhaps the caused stress of different heat expansion from rebuliding transmission path.
Preferably these parts are made the shape of a flexible lip (12), lip is molded into parts with the pedestal (2) of outer cover, and the shape of lip slightly stretches in the cavity when making it not have element (4) in cavity.Can be equipped with several lips, for example as shown in Figure 2, two lips be arranged on the vertical wall of each of cavity.In a kind of variation, in order to resist because of vibration puts on the caused any resonance of outer cover, the power that these lips produced can be different.
In another kind changes, as shown in phantom in Figure 1, can replace these lips with flexible rib, rib is formed on two aspectant vertical walls of cavity.Rib preferably has leg-of-mutton cross section, and in its end one chamfering (13 is arranged
1), be convenient to element (4) is inserted in the pedestal (1) of outer cover.
Fig. 3 shows the watertight contiguous block (9 that is installed in respectively in capping (3) groove and the outer cover base recess
1) and (9
2) a preferred embodiment, capping groove and outer cover base recess are used for holding these contiguous blocks.These sizes contiguous block identical and that make with flexible material (for example low-down elastic body of elasticity coefficient) has a series of groove (14
1) (14
2) (14
3) etc., these grooves are parallel to each other and generally are half-cylindrical, every groove all with band protective seam (8
1) (8
2) (8
3) in the optical fiber that waits one closely cooperates, multifiber is lined up flat belt-like and is stretched out outer cover.With a pair of contiguous block fiber clamping band, guaranteed to have the physics watertightness in the place of optical fiber turnover outer cover.Yet because the performance of contiguous block material therefor, when the temperature in the outer cover makes the relative pressure of water vapor rise to the numerical value that can damage element, contiguous block can not prevent water vapor from the inside of outer cover slowly to exosmosis.
As depicted in figs. 1 and 2, fibre ribbon plane of living in (see figure 2) and with the plane (see figure 1) of this planar quadrature in, the outlet of turnover outer cover has circular profile (15
1) (15
2) (15
3) etc.Therefore, can spur the optical fiber that stretches out outer cover like this, the direction (referring to the position that dots among Fig. 1) of the axle of its deviation in driction optical fiber in outer cover, the sure change consistent with the radius-of-curvature r of a certain minimum that is enough to prevent that optical fiber from damaging (that is, supporting the radius-of-curvature of the border circular areas of optical fiber) that makes direction.For example, can select radius r=2 millimeter.
During assembling is by optical element and the device that constitutes of protection outer cover thereof, can obtain the pedestal (1) and the capping (3) of outer cover by moulded plastic material, and assembling like that as described below.
Comprise the operation of the microoperation of optical fiber and the operational means that the cementing agent drop is adhered to well-known, with exposed optical fiber (7
1) with after the end of the waveguide of the integral part that forms component substrate links to each other, element is inserted in the cavity (2) of pedestal (1), notice that assurance makes and be positioned at fiber optic protection layer (8
i) under fiber section pass two contiguous blocks (9 that are positioned at pedestal (1) two ends
1) (9
2) in groove (14
i).For example, so-called " machinery " type or the waterproof lubricant with silicones (silicone) fundamental component can be injected the space that element (4) and cavity (2) inwall are separated, so that reinforcing element is resisted other destructive factor that the moisture that exists in the air and this air have.The injection of lubricant should allow it that expanding volume is arranged, thereby prevents and the relevant any overvoltage effect of lubricant expansion.
Then, pedestal (1) is inserted in capping (3), preassembled position as shown in Figure 4.In the figure, can find that some chucks (16 are arranged
1) (16
2) stretch out capping, so that reach the corresponding slit (17 that is formed on the pedestal
1) (17
2) in, under the rib (18) around just in time reaching, because so rib has the flexibility chuck and can pass through, and rib remains on capping (3) on the pedestal (1) then, a little more than pedestal, the residing position of rib allows to open easily capsule, for example if necessary, can check the installation situation of element in outer cover.
This pre-assembled step allows more easily to operate resulting assembly, until for example with method for ultrasound welding capsule being welded on (process is described) on the pedestal.In this stage, maintain capping with ultrasonic horn, capping is placed on the position of the final welding shown in Fig. 5 (it is the view that obtains along V-V profile line among Fig. 1), simultaneously suitable ultrasonic vibration is passed to lip, so that guarantee the position of the circumferential surface that is in contact with one another at them, capping (3) is soldered to pedestal (1), shown in number in the figure (19).
As seen, all these operations make them can carry out automatically parts are installed in process in the outer cover.
Now see; the present invention can reach the target of being set up, and promptly by the protection outer cover of integrated optical element is provided, makes it avoid the possible different thermal expansion that outer cover stands or the influence of other mechanical stress; this outer cover keeps simple structure, is suitable for automated assembling operations.
Certainly, the invention is not restricted to embodiment as described herein, provide embodiment only to do to use for example.
Claims (10)
1. the protection outer cover of an optical element (4), optical element comprises a substrate of being made by certain material, described substrate is loaded with an integrated waveguide (6 at least
i), described waveguide is via the optical fiber (7 that stretches out described outer cover
i) extend to outside the described substrate, described outer cover has been determined the internal cavities (2) of a sealing, in order to place described element (4), it is characterized in that, the big I of described cavity (2) is held described element, and leaves a certain amount of gap (j
i) can prevent that stress from doing effectively to transmit between outer cover and element (4).
2. outer cover as claimed in claim 1, it is characterized in that, it comprises a compliant member (12) (12 ') (13) at least, described compliant member is pressed between two relative faces of element (4) described in the described outer cover (1) (3) and described cavity (2) slightly, does possible vibration to prevent described element (4) in described cavity (2).
3. outer cover as claimed in claim 2, it is characterized in that, described compliant member is the lip shape of (12) (12 '), and the inwall of it and described outer cover (1) (3) forms a unit, and extends to outside the surface of the described cavity (2) that is formed in this outer cover.
4. outer cover as claimed in claim 2 is characterized in that described compliant member is the shape of flexible rib (13), is formed on the inwall of the described cavity (2) in the described outer cover.
5. as any described outer cover in the claim 1 to 4, it is characterized in that it comprises a pedestal (1) and a capping (3), forms cavity (2) in described pedestal, seals described cavity (2) with described capping, described capping (3) has a plurality of chucks (16
i), described chuck is designed to cooperate with complimentary ribs (18) in the described pedestal (1), and to guarantee that described capping (3) and described pedestal (1) temporarily are pre-assembled to the position that is associated, this position is different from their and forever assembles pairing position.
6. outer cover as claimed in claim 5 is characterized in that, described capping (3) has a recessed portion (3 that is suitable for holding a label on its outer surface
i).
7. as claim 5 or 6 described outer covers, it is characterized in that, at described optical fiber (7
i) (8
i) zone of stretching out described outer cover (1) (3), watertight contiguous block (9 is equipped with in described pedestal (1) and described capping (3)
1) (9
2), they are suitable for holding the described optical fiber (7 with flat belt shape in the mode of complementation
i) (8
i).
8. as any described outer cover in the claim 1 to 6, it is characterized in that it has circular surface (15 in the place that described optical fiber stretches out outer cover
i), described circular surface is suitable for supporting described optical fiber with predetermined minimum profile curvature radius (r).
9. as any described outer cover in the claim 1 to 7, it is characterized in that described outer cover is equipped with an integrated optical element (4).
10. outer cover as claimed in claim 9 is characterized in that, the waterproof lubricant is dropped in the space that element (4) and cavity inner wall are separated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9501862A FR2730820B1 (en) | 1995-02-17 | 1995-02-17 | PROTECTIVE HOUSING FOR INTEGRATED OPTICAL COMPONENT |
| FR95/01862 | 1995-02-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1176006A true CN1176006A (en) | 1998-03-11 |
Family
ID=9476264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96191994A Pending CN1176006A (en) | 1995-02-17 | 1996-02-13 | Protective housing for integrated optical component |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0821800A1 (en) |
| JP (1) | JPH11500239A (en) |
| KR (1) | KR19980702263A (en) |
| CN (1) | CN1176006A (en) |
| AU (1) | AU704852B2 (en) |
| CA (1) | CA2210932A1 (en) |
| FR (1) | FR2730820B1 (en) |
| WO (1) | WO1996025679A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6292615B1 (en) * | 1999-03-09 | 2001-09-18 | Uniphase Telecommunications Products, Inc. | Optical fiber feedthrough |
| US6857790B2 (en) * | 2000-09-01 | 2005-02-22 | Lightwave Microsystems Corporation | Apparatus and method to vertically route and connect multiple optical fibers |
| JP5771170B2 (en) * | 2012-09-04 | 2015-08-26 | 日本電信電話株式会社 | Optical fiber connection member |
| KR102079256B1 (en) * | 2013-09-13 | 2020-02-20 | 삼성디스플레이 주식회사 | Display device and method of fabricating the same |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0106116B1 (en) * | 1982-09-10 | 1989-04-26 | Alcatel N.V. | Arrangement for protecting an optical fiber coupler and a method of manufacturing the same |
| JPS63205617A (en) * | 1987-02-20 | 1988-08-25 | Fujitsu Ltd | Structure of waveguide type optical device |
| JPH0273207A (en) * | 1988-09-09 | 1990-03-13 | Nippon Telegr & Teleph Corp <Ntt> | Packaging structure of optical waveguide parts |
| FR2674033B1 (en) * | 1991-03-14 | 1993-07-23 | Corning Inc | INTEGRATED OPTICAL COMPONENT LINKED BETWEEN AN INTEGRATED WAVEGUIDE AND AN OPTICAL FIBER, OPERATING IN A WIDE AREA OF TEMPERATURE. |
| JP3199181B2 (en) * | 1991-07-08 | 2001-08-13 | 日本電信電話株式会社 | Optical waveguide circuit module |
| JP3194397B2 (en) * | 1991-08-05 | 2001-07-30 | 日本電信電話株式会社 | Optical waveguide circuit module |
| US5214726A (en) * | 1991-10-07 | 1993-05-25 | United Technologies Corporation | Strain isolated integrated optic chip package |
| JPH05257033A (en) * | 1992-03-16 | 1993-10-08 | Sumitomo Electric Ind Ltd | Structure of joining part between optical waveguide and optical fiber |
| AU668648B2 (en) * | 1993-05-26 | 1996-05-09 | Sumitomo Electric Industries, Ltd. | Optical waveguide module and method of manufacturing the same |
| JP3259742B2 (en) * | 1993-06-22 | 2002-02-25 | 住友電気工業株式会社 | Optical waveguide module |
| JPH0792342A (en) * | 1993-07-29 | 1995-04-07 | Sumitomo Electric Ind Ltd | Optical waveguide module |
-
1995
- 1995-02-17 FR FR9501862A patent/FR2730820B1/en not_active Expired - Fee Related
-
1996
- 1996-02-13 CA CA002210932A patent/CA2210932A1/en not_active Abandoned
- 1996-02-13 AU AU49793/96A patent/AU704852B2/en not_active Ceased
- 1996-02-13 WO PCT/US1996/001931 patent/WO1996025679A1/en not_active Application Discontinuation
- 1996-02-13 CN CN96191994A patent/CN1176006A/en active Pending
- 1996-02-13 KR KR1019970705660A patent/KR19980702263A/en not_active Application Discontinuation
- 1996-02-13 JP JP8525086A patent/JPH11500239A/en active Pending
- 1996-02-13 EP EP96906405A patent/EP0821800A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR2730820A1 (en) | 1996-08-23 |
| WO1996025679A1 (en) | 1996-08-22 |
| KR19980702263A (en) | 1998-07-15 |
| JPH11500239A (en) | 1999-01-06 |
| FR2730820B1 (en) | 1997-06-06 |
| AU704852B2 (en) | 1999-05-06 |
| EP0821800A4 (en) | 1998-02-04 |
| AU4979396A (en) | 1996-09-04 |
| CA2210932A1 (en) | 1996-08-22 |
| EP0821800A1 (en) | 1998-02-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |