WO2019171210A1 - Épissure de fibre optique avec un adhésif optique thermoplastique - Google Patents

Épissure de fibre optique avec un adhésif optique thermoplastique Download PDF

Info

Publication number
WO2019171210A1
WO2019171210A1 PCT/IB2019/051548 IB2019051548W WO2019171210A1 WO 2019171210 A1 WO2019171210 A1 WO 2019171210A1 IB 2019051548 W IB2019051548 W IB 2019051548W WO 2019171210 A1 WO2019171210 A1 WO 2019171210A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical
optical fiber
splice
adhesive
fiber
Prior art date
Application number
PCT/IB2019/051548
Other languages
English (en)
Inventor
David Scott Thompson
William J. Clatanoff
Tommie W. Kelley
Donald K. Larson
Joseph D. Rule
Daniel J. Treadwell
Original Assignee
3M Innovative Properties Company
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 3M Innovative Properties Company filed Critical 3M Innovative Properties Company
Priority to CN201980015721.0A priority Critical patent/CN111801613A/zh
Publication of WO2019171210A1 publication Critical patent/WO2019171210A1/fr

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
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3801—Permanent connections, i.e. wherein fibres are kept aligned by mechanical means
    • G02B6/3803—Adjustment or alignment devices for alignment prior to splicing
    • 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
    • G02B6/255—Splicing of light guides, e.g. by fusion or bonding

Definitions

  • the present invention relates to the use of a thermoplastic or hotmelt optical adhesive in the transmission path in a fiber optic network.
  • the exemplary optical adhesive can be between the terminal ends of optical fiber in an optical fiber splice device.
  • optical fibers As the world demand for data continues to increase, more data is transmitted optically through indoor/outdoor cables using optical fibers, to deliver fiber to the home (FTTH), within the data center, central office or enterprise environments, as well as in fiber fed backhaul applications for wireless transmission or fiber to the antenna (FTTA) applications.
  • FTTH fiber to the home
  • FTTA fiber fed backhaul applications for wireless transmission or fiber to the antenna
  • ferrule based connectors such as SC, LC, MT format optical fiber connectors will be used, due to their durable construction.
  • permanent joints or splices are used to join optical fibers where the lowest optical loss is required.
  • Conventional optical fiber splicing technologies include fusion splicing and mechanical splicing.
  • Fusion splicing utilizes an arc to fuse or melt the ends of two optical fibers together.
  • the splicing machines are expensive ($3,000-$ 10,000), fragile instruments, operated by specially trained technicians. Proper use results in a reliable low optical loss joint. Fusion splicing is especially attractive where large numbers of fibers need to be spliced at a given location. However, it becomes cost prohibitive to equip thousands of technicians with fusion splicers as they construct FTTH links to individual subscribers.
  • Mechanical splice uses a mechanical structure to align and clamp two optical fiber ends, resulting in a low-cost installed splice. It can be challenging to prepare and mate optical fiber ends in a mechanical splice and have intimate glass to glass contact every time.
  • industry standard cleavers deliver +/- 1 degree cleave angle on the end face of an optical fiber.
  • a small air gap can occur between the active portions of the optical fibers.
  • an index match gel or oil is used at the fiber joint to enhance the optical performance of mechanical splices.
  • some users are concerned over migration, evaporation, and wicking of index match gel or oil away from the critical interconnection region within the splice.
  • splice connections have been described which utilize a visible light curing optical adhesive that are permanent once the adhesive has been cured.
  • a quasi-permanent splice that can be deactivated to rework a substandard connection or to disconnect the optical fibers joined by the splice.
  • re- workable optical splices are important in data center and FTTx applications due to the need to adjust or alter connections in the network, and to connect different pairs of optical fibers over the life of the installation.
  • an optical fiber splice device for connecting at least a first and second optical fiber.
  • the splice device comprises a splice element made of a silica material having at least one fiber alignment channel, and a thermoplastic hot melt adhesive disposed within the at least one fiber alignment channel.
  • the at least first and second optical fibers are disposed in the optical fiber splice in an optically coupled state that defines a transmission path, wherein at least a portion of the hot melt adhesive is disposed between terminal ends of the at least first and second optical fibers in the light path.
  • Figs. 1 A-1B are two views of a splice element according to a first embodiment of the invention.
  • Figs. 2A-2B are two views of a splicing process utilizing the splice element of Figs. 1A and 1B. While the invention is amenable to various modifications and alternative forms, specifics thereof have been shown by way of example in the drawings and will be described in detail. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the invention as defined by the appended claims.
  • the present invention relates to the use of a thermoplastic or hotmelt optical adhesive in the transmission path in a fiber optic network.
  • the exemplary hotmelt optical adhesive can be used in optical devices between the terminal end of at least one optical fiber and at least a second optical signal transfer media.
  • the second signal transfer media may be a second optical fiber, an optical wave guide, a lens and/or an opto- electric transceiver.
  • the interconnection point between the at least one optical fiber to a second optical signal transfer media may be used in either an indoor or an outdoor environment.
  • the adhesive can be a thermoplastic or hot-melt optical adhesive. Activation of said adhesive by heating above its glass transition temperature reduces the viscosity of the hotmelt adhesive to allowing termination of a splice connection between optical media.
  • Hot melt adhesives have traditionally been used to mechanically secure optical fibers in securement in fiber optic splices and optical fiber connectors.
  • Hot melt adhesives have not been used in the optical path for optical fiber telecommunications, and appear to have not been explored for use in the optical path in other applications, except for use as a laminating adhesive in the film stack of consumer electronics displays.
  • Hot melt adhesives are non-tacky and in a solid state in their working temperature range.
  • Conventional hot melt adhesives are not designed for use in the optical path or more specifically for use in optical fiber splicing applications.
  • the hot melt adhesive used in optical fiber connectors is typically dyed a dark color to facilitate visualization of the adhesive during the termination and finishing processes required for optical fiber connectors.
  • 3MTM Hot Melt LC, SC, ST and FC Connectors incorporate hot melt adhesives to secure the optical fiber in a ferrule-type connector housing, such as is described in United States Patents 4,984,865 and 7, 147,384.
  • the hot melt is not in the direct optical path, but rather provides a structural means of holding the fiber in the connector housing.
  • the high degree of tinting in the adhesive make it unsuitable for use in the optical path.
  • the exemplary hot melt adhesive is selected such that the adhesive is solid over the operating temperature range.
  • the hot melt adhesive will not wick away, evaporate, migrate during shipping or storage. Being a solid, the exemplary hot melt stays inside the splice until heated to its melting point (i.e. the hot melt adhesive will remain unchanged/intact until heated for use).
  • the hot melt adhesives of the present invention are not cross-linked, the hot melt adhesive can be repeatably heated to allow the connecting, disconnecting or reworking of optical fibers held therein.
  • the hot melt adhesives can be used in opaque substrates such as splice devices made of metal or opaque plastics and ceramics.
  • Hot melt adhesives may have a very well-defined melt temperature with a dramatic drop in viscosity at that temperature.
  • Low viscosity provides an advantage to fiber insertion and positioning, but could present challenges of flow beyond the alignment region in the precision ceramic engine.
  • Optical thermoplastics have a broader range of softening temperatures, providing lowered viscosity to enable fiber insertion, but not too low as to flow out of the alignment and interconnection region of the splice.
  • a hot melt adhesive in a mechanical splice can protect the optical fibers connected therein both mechanically and from the environment.
  • a mechanical splice device can be shipped with at least one optical fiber preplaced therein.
  • the mechanical splice may be in an open unactivated position, in which case having the terminal end of the at least one optical fiber disposed within the hotmelt adhesive within the mechanical splice not only helps retain the fiber in the splice, but also prevents contamination of the endface of the optical fiber.
  • a thin layer of hot melt adhesive could be placed on the exposed ends of prepared optical fibers in the factory to protect them from debris and/or moisture. The hot melt adhesive also prevents mechanical damage to the terminal end or end face of the optical fibers and protecting the exposed glass from chipping.
  • the hot melt adhesive in an optical fiber device, such as a mechanical optical fiber splice has advantages over traditional liquid adhesives or index matching gels.
  • the hot melt adhesive cannot be accidently wiped off or removed.
  • the hot melt adhesive being a solid, would remain intact until heating at the final splicing operation.
  • the hotmelt adhesive can be uniformly and precisely placed in the splice.
  • the hotmelt adhesive can be introduced into the splice in a solid state in the form of a sheet, a film, sticks, fibers or rods, a powder or as a coating disposed on the exterior surface of the bare glass portions of the optical fibers being connected enabling an economical automated manufacturing process.
  • the hot melt could be delivered in a shape or form that is easily delivered to the desired location, for example a rectangular sheet delivered to the splice region of fiber splice alignment element, or a flat circular disk that covers the intended joining area. Molding, die cutting, or other methods of shaping a hot melt could be used to deliver the hot melt in solid during factory assembly.
  • direct hot dispensing of the hotmelt adhesive can be used to deliver the hot melt adhesive in the liquid form to the area of interest within optical device during the assembly of the device. Many splice pre-packaging options exist for the hot melt adhesive.
  • Coating on fiber, coating on element surface, disks, powders, sheets, wafers, tubes, rings, complex molded shapes could have advantages in certain designs and configurations. Disks of hot melt could also be applied just to the fiber tips, in the case where other means of fiber fixation are preferred.
  • the hot melt adhesive can be coated or dispensed on the surface of the mechanical splice element to ensure adequate coverage and adhesion of the optical fibers in the final splice.
  • the hot melt adhesive can be delivered to pockets or reservoirs in the splicing elements which in turn would deliver the liquified hot melt adhesive to the fiber interface at the desired time.
  • the combination of a reservoir for the hotmelt adhesive and a v-groove could be designed to transport the liquified hot melt adhesive to the splicing region using conventional fluidic transport methods.
  • the hot melt adhesive does not need to be contained by physical features in the splice, since it is a solid until the splicing process is initiated.
  • the melt viscosity could be tailored for different functions within in the splice device. There could be a low viscosity material at the center of the splice for wetting the fibers at the fiber interface, and there could be a high viscosity material disposed around the perimeter of the splice to prevent the low viscosity material from running out during the heating process used when terminating the optical fibers.
  • some of the traditionally plastic components in the optical device could be made from the hot melt adhesive or coated with the hot melt adhesive. When melted they would structurally bond the optical device together, thereby joining the remaining device components together be they plastic or ceramic, etc. This could provide a stronger structural bond than a traditional plastic latch or spring mechanism.
  • the exemplary hot melt adhesive should have high optical transmission (>95%) at the wavelength of the signal to be carried by the optical fiber.
  • the hot melt adhesive can be index matched to core of the optical fiber to reduce signal losses due to back reflection, avoiding the need to angle the fiber tips to reduce reflection.
  • telecommunication wavelengths are 850 nm and 1300 nm, and for single mode optical fiber, the telecommunication wavelength band about is 1250 nm - 1675 nm.
  • the exemplary hot adhesive should have a temperature stable refractive index with a low dn/dT so that adhesive remains index matched to the optical fibers over the outside plant temperature conditions.
  • the molecular weight of polymer in the adhesive can be low enough to maintain a sufficiently low viscosity.
  • the molecular weight of the adhesive can be below 50,000 g/mol, or below 40,000 g/mol, or below 30,000 g/mol, or below 20,000 g/mol, or below 10,000 g/mol.
  • the thermal expansion of the hotmelt adhesive should be matched to the optical fiber and/or the splice element in the working temperature range.
  • the thermal expansion of the hotmelt adhesive should be matched to the optical fiber and/or the splice element in the working temperature range.
  • the hotmelt adhesive can be made of a polyurethane or a polyamide.
  • the polyurethane hotmelt adhesive can have a glass transition temperature above 60°C, or above 70°C, or above 80°C, or above 90°C.
  • the polyurethane hotmelt adhesive can have a melting temperature above 60°C, or above 70°C, or above 80°C, or above l00°C, or above l50°C.
  • the hotmelt adhesive preferably has a small change in modulus within the use temperature range.
  • the hotmelt adhesive has a change in modulus of less than 90% between 0°C and 85°C, or less than 80% between 0°C and 85°C.
  • the hotmelt adhesive preferably has a large change in modulus upon application of heat above the expected use temperature.
  • the hotmelt adhesive has a change in modulus of more than 90% between 85°C and 200°C, or more than 90% between 85°C and l50°C, or more than 97% between 85°C and 200°C, or more than 97% between 85°C and l50°C.
  • the hotmelt adhesive have a melt temperature that is at least l0°C to 25°C above the working temperature range of the optical fiber splice.
  • the exemplary hotmelt adhesives are substantially transparent to transmitted light in the range of about 800 nm to about 1770 nm.
  • the hotmelt adhesive has a transparency greater than about 90%, greater than 95% or greater than 97% in the given wavelength range.
  • Figs. 1 A-1B show a bare fiber holding plate or splice element 100 configured to join a plurality of parallel optical fibers 54, 54’ of first and second optical fiber ribbons 50 as shown in Fig 2B.
  • the body can have the shape of a generally rectangular solid, semi-cylindrical solid or other shape having at least one generally flat major surface.
  • the splice element 100 comprises a splice body 101 having a first end lOla and a second end lOlb.
  • Splice body 101 has an integral fiber alignment mechanism comprising a plurality of alignment grooves or channels 112 that extend from the first end to the second end of the splice body. Each alignment channel is configured to guide and support a single optical fiber.
  • the splice element has 12 parallel fiber alignment channels to splice together 2-12 fiber optical ribbons in an end-to-end configuration.
  • the exemplary optical fiber slice element can have fewer or more fiber alignment channels depending on the final application and the number of optical fibers to be spliced.
  • the splice element can have two parallel fiber alignment channels for joining a pair of duplex optical fiber cables.
  • the exemplary splice device can connect a first optical fiber to a second optical fiber.
  • alignment mechanism is configured to align a plurality of optical fibers, which are then bonded or spliced together end-to-end using an optical hotmelt adhesive.
  • the fibers can be inserted into the alignment mechanism through entrance openings or apertures 1 l3a and 1 l3b.
  • the entrance apertures 1 l3a, 1 l3b can comprise a funneling inlet portion formed by the tapering of the partitions 114 between adjacent channels to provide for more straightforward fiber insertion.
  • the entrance apertures can be fully or partially cone or funnel-shaped to guide the insertion of the optical fibers into the fiber alignment channels 112.
  • splice element 100 can include a fiber comb portion 115 disposed adjacent to the entrance openings or apertures 1 l3a and 1 l3b on each side of body 101.
  • the fiber comb can be used to support, align and guide the optical fibers being terminated in the exemplary splice element 100.
  • the fiber alignment channels 112 extend through the comb portion.
  • the partitions between the adjacent fiber alignment channels in the comb portion can be taller than along other portions of the alignment channels.
  • the taller partition portions 1 l4a (Fig. 1 A) allow the individual fibers to be out of position by up to a half fiber diameter while still feeding into the correct fiber alignment channels providing a self-centering mechanism for the optical fibers in the alignment channels.
  • Splice element 100 can also include a clamp plate 120 (shown in Figs. 1B and 2B), wherein the clamp plate can be a flat plate disposed over at least the interconnection region 105 of the splice element.
  • Positions posts 119 extend from the upper surface of body 101 adjacent to the interconnection region to assure and maintain the proper positioning of clamping plate 120 over the interconnection region.
  • Fiber alignment channels 112 can be formed in either body 101 or clamp plate 120, or fiber alignment channels can be formed in both body 101 and clamp plate 120.
  • the fiber alignment channels 112 can have a semi-circular cross section, a trapezoidal cross section, a rectangular cross section or a v-shaped cross section. In the embodiment of Figs.
  • alignment groove 112 is formed in body 101, while clamp plate 120 has a flat-shaped major surface.
  • the body and the clamp plate are brought together to hold one or more fibers in place in the alignment groove prior to curing of the optical adhesive or mechanical clamping of the splice element.
  • a hotmelt optical adhesive can be used in the exemplary splice element to both mechanically secure the optical fibers in the splice element, protect the bare glass portions of the optical fibers from moisture or other contaminants and/or serve as an interface material between the ends of the optical fiber to enhance signal integrity.
  • clamping plate 120 can be a thin flexible glass or metal clamping plate.
  • the clamping plate can be placed in a first or unflexed position to allows space for insertion of the optical fibers and in a second flexed or clamped position upon application of an external force that the flexible glass clamping plate to close any clearance or free space as well as to align and secure the fibers in the interconnection region.
  • Figs. 2A-2B illustrate making a splice connection with splice element 100, which will be explained in detail below.
  • the clamping plate can be rectangular, square, circular or other polygonal shape as needed for a given splice device.
  • the clamping plate can be a non-silica based flexible clamping plate.
  • the non-silica based flexible clamping plate can be formed of a thin piece of metal such as Invar or stainless steel or a low CTE polymers including a glass filled liquid crystal polymer material such as VECTRA® A130 LCP Glass
  • the clamping plate can have a thickness between about 25 microns to about 250 microns, preferably between about 75 microns and about 125 microns.
  • At least one of the slice element body 101 and clamp plate 120 is formed from a silica material, especially a net shape, cast and cure silica materials, is described for example in United States Provisional Patent Application Nos. 62/382944 and 62/394547, each of which is incorporated herein in its entirety.
  • both the splice element body 101 and a clamp plate 120 are formed from a net shape cast and cure silica material.
  • parts made from net shape cast and cure silica material are transparent.
  • net shape cast and cure silica material can have a transparency of greater than about 90% at a wavelength of light between 430 nm to about 480 nm.
  • Such a transparent net shape cast and cure silica material allows for the use of a visible light source to be directed through one of the splice element body or the clamping plate from the outside of the structure to cure the optical adhesive disposed therein.
  • a net shape cast and cure silica alignment mechanism and a hotmelt adhesive the temperature performance of the splice element can be stable across a wide temperature range, as the thermal properties of the optical fibers and splice element are essentially the same.
  • FIG. 2A-2B An exemplary splicing process is shown in Figs. 2A-2B, where a first fiber ribbon
  • optical fiber 50 comprising a plurality of first optical fibers 54 can be spliced to a second fiber ribbon (not shown) comprising a plurality of second optical fibers 54’.
  • Optical fibers are oriented in a parallel planar array in the fiber ribbon and are surrounded by a ribbon jacket 52.
  • the optical fibers in the exemplary ribbons can be standard single mode or multimode optical fibers, such as SMF 28, OM2, OM3, OM4, OM5 fiber ribbon cables (available from Corning Inc.).
  • a section of the ribbon jacket 52 is removed from the terminal end of ribbon fiber 50 to expose optical fibers 54.
  • the protective acrylate coating on the optical fibers can be stripped to the desired length.
  • acrylate coating on the optical fibers can be stripped and cleaved to a length of between 2 mm and 15 mm, preferably about 5 mm.
  • the fibers can be cleaved so that the end face of the optical fiber is perpendicular to the longitudinal axis of the optical fiber (i.e. cleaved flat).
  • the fibers can be cleaved at an angle that deviates from perpendicular by 2° to about 10°, preferably between 4° to about 8°.
  • a post-cleave end finishing step may be employed to shape or bevel the ends of the optical fibers.
  • Exemplary post-cleave end finishing processes can include abrasive polishing and/or laser finishing.
  • optical fibers 54 of the first fiber ribbon 50 are inserted into entrance openings 1 l3a at the first end lOla of the splice element 100 as shown in Fig 2A.
  • the fibers are slid through fiber alignment channels 112 until the ends of the optical fibers are disposed in the center of interconnection region 105.
  • the second fiber ribbon is then prepared as described above.
  • the second optical fibers 54’ of the second ribbon 50 are inserted into entrance openings 113b at the second end 10 lb of the splice element 100 and slid through the corresponding fiber alignment channels until the ends of the optical fibers are disposed in the center of interconnection region 105.
  • a hotmelt optical adhesive can then be dispensed into the interconnection region (indicated by arrow 150).
  • Clamp plate 120 is placed over the interconnection area and a force, F, is applied as shown in Fig. 2B. The force on the clamp plate presses the clamping plate toward the splice element closing any clearance or free space between the clamp plate and the fibers as well as to align the fibers in the fiber alignment channels in the interconnection region.
  • splice element 100 can be preloaded with a hotmelt optical adhesive disposed in the interconnection region between the splice element and a flexible clamp plate.
  • the element is heated prior to introduction of the optical fibers to liquify the hotmelt adhesive.
  • the first and second fibers are inserted into the fiber alignment channels until the ends of the optical fibers meet in the center of interconnection region 105.
  • a force is applied to the clamp plate, causing a portion of the clamp plate to flex toward splice element 100 to close any clearance or free space between the clamp plate and the fibers as well as to align the fibers in the interconnection region.
  • the splice element is cooled allowing the hotmelt adhesive to solidify, locking the optical fibers in the splice element.
  • the hotmelt adhesive can be disposed in reservoirs in the comb portion of the splice element.
  • the splice element is heated prior to insertion of the fibers to liquify the hotmelt adhesive.
  • the fibers pass through the comb portion, they are coated with the hotmelt adhesive.
  • the insertion of the fibers will carry the hotmelt adhesive into the interconnection region where it can cool to secure the fibers in the splice element.
  • the hotmelt adhesive can be introduced into the splice in the factory in a solid state in the form of a sheet, a film, sticks, fibers or rods, a powder or as a coating disposed on the exterior surface of the bare glass portions of the optical fibers being connected enabling an economical automated manufacturing process.
  • a hot melt adhesive can be used to improve the long-term performance of the fiber optic splice.
  • a hot melt adhesive in this application is that it can provide a more permanent fiber optic splice (replacing the index matching gel) but still allowing the splice to be re-workable, that is, to allow the fiber optic splice to be re-positioned through additional heat/cool cycles.
  • adhesives which make a permanent bond i.e. epoxy adhesives
  • Re- workable splices are important in data center and FTTx applications due to the need to adjust or alter connections in the network, and to connect different pairs of fibers over the life of the installation.
  • a fiber splice is made as described below.
  • An Ando AQ6317B optical signal analyzer from Ando Electric Company, Ltd. (Japan) and a broadband light source, for example a SLED from GoLight SLED-EB-D-1250-1720-20-FC/AP, are connected in parallel to one side of a 1x2 coupler and the cleaved optical fiber is attached to the other side of said coupler.
  • a drop of a sample adhesive is placed on a flat cleaved end face of the optical fiber and cooled.
  • the cleaved end of the optical fiber with adhesive disposed thereon is placed in a controlled temperature environment.
  • a test scan of the light reflected by the glass at cleaved end face with the cured sample adhesive is measured from 1250 nm to 1720 nm yielding a sample spectra. This process is repeated at 20°C, 40°C, 60°C, and 80°C. The base spectra is subtracted from the sample spectra for each temperature condition to give a test spectra.
  • An average reflectance value is obtained from the test spectra at each temperature condition.
  • the index of refraction was calculated for the material being analyzed using the Fresnel equation to provide measured reflection at 80°C.
  • dn/dT is calculated from the slope of the line through the calculated index values when plotted against their corresponding temperature.
  • test samples were put into a controlled temperature chamber and the insertion loss and return loss were monitored as the temperature was cycled according to the Telcordia GR-765 standard from -40°C to 75°C.
  • a net shape cast and cure silica splice element containing a v-groove i.e. fiber alignment channel
  • the ends of First and second SMF 28 single mode optical fibers were each cleaved using a C1-01 cleaver available from
  • the first optical fiber was aligned, placed, and held in the v-groove on a first side of the splice element.
  • the cleaved end faces were brought together facing each other so that they were in intimate contact.
  • the block and splice element were heated to prescribed temperature.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

La présente invention concerne l'utilisation d'un adhésif optique thermoplastique/thermofusible dans le trajet de transmission dans un réseau de fibres optiques. En particulier, l'adhésif thermofusible donné à titre d'exemple peut être disposé entre les extrémités terminales d'une fibre optique dans un dispositif d'épissure de fibre optique, sans affecter sensiblement la transmission de signal.
PCT/IB2019/051548 2018-03-07 2019-02-26 Épissure de fibre optique avec un adhésif optique thermoplastique WO2019171210A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980015721.0A CN111801613A (zh) 2018-03-07 2019-02-26 具有热塑性光学粘合剂的光纤接头

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862639594P 2018-03-07 2018-03-07
US62/639,594 2018-03-07

Publications (1)

Publication Number Publication Date
WO2019171210A1 true WO2019171210A1 (fr) 2019-09-12

Family

ID=65911218

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2019/051548 WO2019171210A1 (fr) 2018-03-07 2019-02-26 Épissure de fibre optique avec un adhésif optique thermoplastique

Country Status (2)

Country Link
CN (1) CN111801613A (fr)
WO (1) WO2019171210A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0164784A1 (fr) * 1984-05-23 1985-12-18 Koninklijke Philips Electronics N.V. Procédé pour la connexion de fibres optiques
JPS6381409A (ja) * 1986-09-26 1988-04-12 Sumitomo Electric Ind Ltd 光フアイバ用メカニカルスリ−ブ
US4984865A (en) 1989-11-17 1991-01-15 Minnesota Mining And Manufacturing Company Thermoplastic adhesive mounting apparatus and method for an optical fiber connector
US7147384B2 (en) 2004-03-26 2006-12-12 3M Innovative Properties Company Small form factor optical connector with thermoplastic adhesive

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0164784A1 (fr) * 1984-05-23 1985-12-18 Koninklijke Philips Electronics N.V. Procédé pour la connexion de fibres optiques
JPS6381409A (ja) * 1986-09-26 1988-04-12 Sumitomo Electric Ind Ltd 光フアイバ用メカニカルスリ−ブ
US4984865A (en) 1989-11-17 1991-01-15 Minnesota Mining And Manufacturing Company Thermoplastic adhesive mounting apparatus and method for an optical fiber connector
US7147384B2 (en) 2004-03-26 2006-12-12 3M Innovative Properties Company Small form factor optical connector with thermoplastic adhesive

Also Published As

Publication number Publication date
CN111801613A (zh) 2020-10-20

Similar Documents

Publication Publication Date Title
AU2018201585B2 (en) Manufacture and testing of fiber optic cassette
US6328479B1 (en) Multi-terminator optical interconnect system
US6767139B2 (en) Six-port optical package and method of manufacturing
EP1884809B1 (fr) Connecteur à faisceau élargi
US6582135B2 (en) Method of matching optical elements and fiber ferrules
US7187826B2 (en) Multiple-port optical package and DWDM module
JP2009122451A (ja) 光学接続構造
WO2003010564A2 (fr) Systeme de connecteur a faisceau elargi
CN101438193A (zh) 光学设备及透镜组件
US20170052321A1 (en) Fused expanded beam connector
CN115943333A (zh) 光纤终端结构、光连接部件以及空心光纤
US6729770B2 (en) Methods of making a multiple-port optical package
US20030185519A1 (en) Articulated enclosure for optical packages and method of manufacture
US20020094172A1 (en) Precision fiber ferrules
US7076132B2 (en) Optical devices and methods
CA2104833A1 (fr) Dispositif optique du type guide de lumiere dote de prises optiques
WO2019171210A1 (fr) Épissure de fibre optique avec un adhésif optique thermoplastique
JPH04130304A (ja) 光コネクタ
WO2019173060A1 (fr) Épissure de fibres optiques avec un adhésif optique thermoplastique
US6550984B2 (en) Integrated optical component with photodetector for automated manufacturing platform
US11086075B2 (en) Fiber array units with mode-field diameter conversion, and fabrication method
US20230176286A1 (en) Optical components and optical connectors having a splice-on connection and method of fabricating the same
Takaya et al. Single-mode multifiber connector using an injection molded MT type ferrule and a quick assembly technique
Miller Optical Fiber Splicing

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19713571

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19713571

Country of ref document: EP

Kind code of ref document: A1