EP1702226A4 - Fibre optique a pointe presentant une lentille et son procede de fabrication - Google Patents

Fibre optique a pointe presentant une lentille et son procede de fabrication

Info

Publication number
EP1702226A4
EP1702226A4 EP05722400A EP05722400A EP1702226A4 EP 1702226 A4 EP1702226 A4 EP 1702226A4 EP 05722400 A EP05722400 A EP 05722400A EP 05722400 A EP05722400 A EP 05722400A EP 1702226 A4 EP1702226 A4 EP 1702226A4
Authority
EP
European Patent Office
Prior art keywords
optical fiber
lens surface
optically transparent
etching
optical
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.)
Withdrawn
Application number
EP05722400A
Other languages
German (de)
English (en)
Other versions
EP1702226A2 (fr
Inventor
Yin S Tang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority claimed from US10/754,365 external-priority patent/US6950239B2/en
Priority claimed from US10/786,766 external-priority patent/US7004811B2/en
Priority claimed from US10/799,483 external-priority patent/US7460748B2/en
Application filed by Individual filed Critical Individual
Publication of EP1702226A2 publication Critical patent/EP1702226A2/fr
Publication of EP1702226A4 publication Critical patent/EP1702226A4/fr
Withdrawn legal-status Critical Current

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
    • G02B6/255—Splicing of light guides, e.g. by fusion or bonding
    • G02B6/2552—Splicing of light guides, e.g. by fusion or bonding reshaping or reforming of light guides for coupling using thermal heating, e.g. tapering, forming of a lens on light guide 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
    • G02B6/26—Optical coupling means
    • G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0044—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping edges or extremities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00663—Production of light guides
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0075—Light guides, optical cables

Definitions

  • This invention generally relates to an optical fiber formation process, and more particularly to a method for forming a lensed tip optical fiber.
  • optical coupling is subject to further disadvantages arising from the use of the lens or lens group. For example, it is difficult to achieve precision optical alignment of the lens and the laser. The fiber can become misaligned due to dimensional changes and mechanical drifts with environmental temperature fluctuations over time.
  • the present invention provides an economical method for manufacturing an optical fiber including a lens formed on at least one end of the optical fiber.
  • the at least one end of the optical fiber is modified, for example, using a material removal process to form a pointed end or "tipped end.”
  • the tipped end is further processed in accordance wit the present invention to create a focal length controllable integrated lens at the tip.
  • the lensed tip optical fiber made by the process of the present invention makes optical alignment with other optical fibers and coupling of the optical fiber with photonic devices, such as light sources, planar waveguides and photonic integrated circuits, less burdensome.
  • a method is provided for manufacturing an optical fiber member.
  • the method includes modifying at least one end of an optical fiber member; and applying energy to the modified end of the optical fiber member to form a lens surface.
  • a method is provided for manufacturing a lensed tip optical fiber. The method includes providing an optically transparent cylindrical fiber; and etching a first end of the optically transparent cylindrical fiber to form a tip. The tip is heated which forms a lens surface at the heated tip.
  • an optical fiber is provided, which includes a first lens surface formed on a first end of an optically transparent cylindrical fiber. The lens surface is formed by: modifying at least one end of the optically transparent cylindrical fiber; and applying energy to the modified end of the optically transparent cylindrical fiber.
  • the method of forming the lensed tip optical fiber of the present invention provides for controllable radius or focal length of the lens at the tip at an economical price.
  • the lensed tip optical fiber provides for easier optical alignment with other optical fibers or various discrete and integrated photonic devices, such as light sources, planar waveguides and photonic integrated circuits. Because each optical fiber includes a "built-in" lens, individual lenses can be removed from most optical fiber packages. The removal of individual lenses reduces the number of components required and removes the possibility of misalignment between multiple lenses or lens groups, which are problems associated with typical optical packages. The reduction of the number of components creates a simpler optical package, reduces expensive packaging related labor costs typically associated with optical component packaging and manufacturing processes, and allows the optical package to be made smaller in size.
  • FIG. 1 is a flowchart illustrating a process of the present invention
  • FIG. 2 is a simplified illustration of a liquid bath in accordance with an embodiment of the present invention
  • FIG. 3 is a simplified illustration of the formation of a modified end at an end of a cylindrical member in accordance with an embodiment of the present invention
  • FIG. 4A is a simplified illustration of a structure resulting from the material removal process in accordance with an embodiment of the present invention
  • FIG. 4B is a simplified illustration of a process for forming a lens on the modified end of the structure of FIG. 4 A in accordance with an embodiment of the present invention
  • FIG. 4C includes simplified illustrations of focal length controllable lens surfaces that can be formed on the modified end of the structure of FIG.
  • FIG. 4 is a simplified illustration of an application for the present invention in accordance with an embodiment of the present invention
  • FIG. 6 is a simplified illustration of another application for the present invention in accordance with an embodiment of the present invention.
  • FIG. 1 is a flowchart illustrating a process 100 for forming a lensed tip on an optical fiber in accordance with an embodiment of the present invention.
  • Process 100 can include providing a single or a bundle of cylindrical members (si 02), such as cylindrical rods or fibers made of glass (SiO 2 ), plastic and the like.
  • a first end of each cylindrical member can be modified by removing material to form etched ends, modified ends or tips (sl04).
  • the tips are formed by subjecting each end of the cylindrical members to a reactive liquid, in the form of a liquid bath or a liquid spray.
  • at least one end of a cylindrical member is at least partially immersed into the liquid bath, which includes a material removal or etching liquid.
  • a suitable material removal or etching liquid is sprayed on at least one end of a cylindrical member.
  • the etching liquid etches or modifies each member segment by removing material therefrom, generally first from the periphery of each member segment. The removal of material from the periphery generally forms a tip at the end of the cylindrical member.
  • the second end of each cylindrical member can also be subjected to a reactive liquid, in the form of a liquid bath or a liquid spray. The second end of the cylindrical member is at least partially immersed into the liquid bath, which includes the etching liquid.
  • a suitable etching liquid is sprayed on the second end of the cylindrical member.
  • FIG. 2 is a simplified illustration of an etching bath including cylindrical members 202 in accordance with an embodiment of the present invention.
  • each cylindrical member 202 can be a rod, cylinder, fiber or other similarly shaped member.
  • each cylindrical member 202 can have or be pre-modified to a non-circular cross- section, for example, a square, a rectangular or other polygonal cross-section which may be more suitable for applications in some planar waveguides, optoelectronic and photonic devices.
  • the diameter and length of each cylindrical member 202 are generally dictated by the application.
  • the diameter d of each cylindrical member 202 can be that of a standard single mode fiber, which has a typical core size of about 9 ⁇ m and an overall diameter of about 125 ⁇ m.
  • the diameter d of each cylindrical member 202 can range from between about less than 100 ⁇ m and about several millimeters depending on the application.
  • cylindrical member 202 can be a multi-mode fiber.
  • end 204 of cylindrical member 202 may be modified by having material removed, for example, using an etching process in accordance with an embodiment of the present invention.
  • the modification of end 204 can be accomplished by placing end 204 into a liquid bath 206.
  • Liquid bath 206 can include any desired formulation of chemicals suited for removing material from fibers.
  • liquid bath 206 includes an HF acid 208.
  • a thin layer of oil can be added to liquid bath 206, which forms an oil film 210 on the surface of HF acid 208. The addition of oil film 210 on the surface of the HF acid 208 creates a barrier on the acid surface to control the depth of the etching process.
  • each cylindrical member 202 includes a core area Ci and a peripheral area P; surrounding core area Ci.
  • liquid bath 208 affects peripheral area P 1 before it affects core area C l5 since the peripheral area Pi is in direct contact and has more exposed surface area to HF acid 208. This is especially true at the corner areas 302, since the top and side of the comer areas are simultaneously exposed.
  • the type of fiber being used also can affect how the tip area is formed.
  • the core area Ci of some fibers is made more pure than the peripheral area Pi —the less pure area is more susceptible to material removal by the liquid.
  • the length L of modified end 304 is controlled, for example, by the depth of immersion of member 202 into HF acid 208 below oil film 210.
  • the sharpness (or slope) S of modified end 304 is controlled by the length of time that member 202 is held in liquid bath 206 and the concentration of HF acid 208.
  • the material removal process of the present invention is a slow process. Accordingly, the manufacturer can continually check the progress of the material removal process, and can remove end 204 from liquid bath 206 at any time that the desired size of end portion 304 has been arrived at.
  • the structure resulting from the material removal process is tipped member 400 as shown in FIG. 4A. As shown in FIG. 4A, tipped member 400 includes at least one tipped end 402 and a base portion 404. In one embodiment, shown in FIG.
  • tipped end 402 can be subjected to an energy source 410, which causes tipped end 402 to be heated.
  • the heat treatment causes both the core area C ⁇ and the outer periphery Pi . of tipped end 402 to melt.
  • the surface tension created by the melting effect causes curved surfaces to form at the ends of the member segment producing lens surfaces 408.
  • the position of the heating and the amount of energy applied to tipped end 402 determines the physical shape and radius of lens surface 408, and thus the focal length of lens surface 408 formed at tipped end 402.
  • the method for supplying the required energy for tipped lens formation can be accomplished using any suitable energy generation means including heat (i.e. flame), electrical spark and electrical arcing and equivalents of the embodiment described below. Referring again to FIG.
  • tipped end 402 of tipped member 400 can be placed into an arc generation device 406, such as a commercially available splicing tool.
  • Arc generation device 406 is capable of providing an arc or spark which allows for the heat treatment to be accomplished for any given optically transparent member material.
  • the heat treatment causes the formation of lens surfaces 408 in the manner described above.
  • energy source 410 which provides heating can be a glow discharge placed near tipped end 402 or a high powered laser using a wavelength that can be absorbed by the material of tipped end 402 to heat the material and form lens surfaces 408 in accordance with the present invention.
  • FIG. 4C includes side views of single optically transparent tipped members 402 after the heating process in accordance with an embodiment of the present invention.
  • Tipped end 304 can be modified by the heating process to have different radii of curvature in two mutually perpendicular or other different directions.
  • the particular illustrations in FIG. 4C show curved surfaces 412a, 412b and 412c, such as an oval, semi-oval, piano/convex asphere and the like formed at different positions on tipped end 402, which can provide different optical performance in different optical axes relative to the major axis of lens surfaces 408.
  • the positioning of lens surface 408 on tipped end 402 is a function of the depth of energy application or heating along the length L of tipped end 402 and the length of time of exposure to the energy source.
  • tipped end 402 has a length L.
  • the application of energy is provided at a location along length L to form lens surface 408 at that location on the tipped end 402.
  • the location along length L where lens surface 408 is formed can have an angle or slope of between about 15° to about 207 which is especially useful for applications in optical fiber or waveguide coupling and packaging.
  • the curvature and size of lens surfaces 408 can be adjusted based on the requirements of the particular application. Manufacturing specifications and tolerances for lens surfaces 408 are governed by the specific application and defined by the end user accordingly.
  • FIG. 5 is a simplified illustration of an application for the present invention in accordance with an embodiment of the present invention.
  • a standard optical package 500a is compared to a new package 500b, which includes the lensed tip optical fiber of the present invention.
  • the standard optical package 500a includes a laser module.
  • the laser module includes driver and environmental temperature controls 502, a laser 504, a lens group 506, isolation device 508, and a standard optical fiber 510.
  • Lens group 506 collects light from laser 504 and directs and focuses the light to optical fiber 510.
  • the multiple components involved must be properly aligned and fixed in place. The alignment of the different components requires each component to be adjustable while at the same time the properly aligned components need to be precisely fixed in positions.
  • the new optical package 500b also includes a laser module having driver and environmental temperature controls 502, a laser 504, and isolation device 508.
  • lens group 506 is removed and standard optical fiber 510 is beneficially replaced with lensed tip optical fiber 512 made in accordance with the process of the present invention.
  • Focal length and shape controlled lensed tip optical fiber 512 includes lens surface 408, which can be placed close to the output facet of laser 504 to efficiently collect most of the light from laser 504 and direct it through optical fiber 512.
  • Experimental tests suggest an optical coupling efficiency as high as 80°Xo is achievable using lensed tip optical fiber 512, which is manufactured in accordance with an embodiment of the present invention.
  • FIG. 6 is a simplified illustration of another application for the present invention in accordance with an embodiment of the present invention.
  • a standard optical package 600a is compared to a new package 600b, which includes the lensed tip optical fiber of the present invention.
  • the standard optical package 600a includes an optical component 602 between two standard optical fibers 604 and 606.
  • lenses 608 and 610 are positioned between optical component 602 and each standard optical fiber 604 and 606.
  • Lens 608 collects light from the input optical fiber 604 and focuses the light onto the input waveguide of optical component 602.
  • Lens 610 on the output side of the optical component picks up light from the output waveguide of optical component 602 and re-focuses it into optical fiber 606.
  • the alignment of lenses 608 and 610 with the optical component 602 and the two optical fibers 604 and 606 requires all components to be adjustable for optimization, while optimized alignment requires all components to be precisely fixed in place, which is never achievable in practice.
  • the new optical package 600b also includes optical component 602.
  • lensed tip optical fibers 612 and 614 are used to replace standard fibers 604 and 606. Since lensed tip optical fibers 612 and 614 include lens surfaces 408, they are automatically aligned to the optical fibers 612 and 614, eliminating the need for multiple adjustable fixtures for the lenses and complicated package designs.
  • the new optical package 600b simplifies the packaging design and optical alignment process and, at the same time, improves the reliability of the optical package.
  • properly designed and controlled lensed tip fibers can increase the optical coupling efficiency and minimize the size of the optical package.
  • the lensed tip optical fiber of the present invention can be used in numerous other applications. For example, the lensed tip optical fiber of the present invention can be used in hermetic sealed pigtail alignment/welding applications.
  • the lens tips can be formed on fiber ribbons for better coupling or interconnection capability in various dense wavelength division multiplexing (DWDM) components, optoelectronic, photonic components and photonic integrated circuits and, can be used for focusing incoming light to detectors to create higher efficiency receivers.
  • DWDM dense wavelength division multiplexing
  • the lensed tip optical fiber can also be used for laser surgical tools in various medical fields and portable sensors as micro-imaging, bioprobes, spectral analysis and the like.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Plasma & Fusion (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une fibre optique à pointe présentant une lentille. Ledit procédé consiste à utiliser une fibre cylindrique optiquement transparente et à attaquer chimiquement une première extrémité de la fibre cylindrique optiquement transparente afin de former une pointe. La pointe est chauffée, une surface de lentille étant ainsi formée au niveau de la pointe chauffée. Ladite fibre optique à pointe présentant une lentille rend l'alignement optique avec d'autres fibres optiques et le couplage de la fibre optique avec des dispositifs photoniques moins coûteux.
EP05722400A 2004-01-08 2005-01-10 Fibre optique a pointe presentant une lentille et son procede de fabrication Withdrawn EP1702226A4 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US10/754,365 US6950239B2 (en) 2004-01-08 2004-01-08 Method for making micro-lens array
US10/775,793 US6950237B2 (en) 2004-01-08 2004-02-09 Fiber based field emitter display
US10/786,766 US7004811B2 (en) 2004-01-08 2004-02-24 Method of making micro-field emitter device for flat panel display
US10/799,483 US7460748B2 (en) 2004-01-08 2004-03-12 Lensed tip optical fiber and method of making the same
PCT/US2005/000715 WO2005067676A2 (fr) 2004-01-08 2005-01-10 Fibre optique a pointe presentant une lentille et son procede de fabrication

Publications (2)

Publication Number Publication Date
EP1702226A2 EP1702226A2 (fr) 2006-09-20
EP1702226A4 true EP1702226A4 (fr) 2009-06-03

Family

ID=34799818

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05722400A Withdrawn EP1702226A4 (fr) 2004-01-08 2005-01-10 Fibre optique a pointe presentant une lentille et son procede de fabrication

Country Status (7)

Country Link
EP (1) EP1702226A4 (fr)
JP (1) JP2007518140A (fr)
KR (1) KR20060108762A (fr)
AU (1) AU2005204571B2 (fr)
CA (1) CA2552720C (fr)
TW (1) TWI282447B (fr)
WO (1) WO2005067676A2 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0627641A1 (fr) * 1993-05-14 1994-12-07 The Furukawa Electric Co., Ltd. Arrangement de fibres optiques et procédé de sa fabrication
US5595669A (en) * 1993-08-18 1997-01-21 Alcatel N.V. Method of forming coupling diopters at the ends of optical fibers
FR2741455A1 (fr) * 1995-11-21 1997-05-23 Alcatel Optronics Procede de formation d'une nappe de fibres optiques inclinees a dioptres de couplage
US5996376A (en) * 1997-04-11 1999-12-07 Digital Optics Corporation Methods of forming optical rods including three-dimensional patterns on end faces thereof
JP2003098525A (ja) * 2001-09-26 2003-04-03 Seiko Epson Corp 液晶表示装置並びに電子機器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5420747A (en) * 1977-07-15 1979-02-16 Hitachi Ltd Photo coupling element
JPS58152213A (ja) * 1982-03-05 1983-09-09 Fujitsu Ltd 光フアイバアレイ端末の整形方法
JPS6338909A (ja) * 1986-08-04 1988-02-19 Nippon Telegr & Teleph Corp <Ntt> レンズ付光フアイバ
US5037174A (en) * 1990-01-31 1991-08-06 E. I. Du Pont De Nemours And Company Optical fiber having an aspherical lens thereon and method of making same
JPH04166804A (ja) * 1990-10-31 1992-06-12 Hitachi Ltd 光ファイバ加工方法
JPH06242331A (ja) * 1993-02-18 1994-09-02 Furukawa Electric Co Ltd:The レンズ付き石英系光ファイバとその製造方法
US5459803A (en) * 1993-02-18 1995-10-17 The Furukawa Electric Co., Ltd. Quartz-based optical fiber with a lens and its manufacturing method
US6415087B1 (en) * 1997-06-04 2002-07-02 Corning Laserton, Inc. Polished fused optical fiber endface
US6375651B2 (en) * 1999-02-19 2002-04-23 Scimed Life Systems, Inc. Laser lithotripsy device with suction
US20030029040A1 (en) * 1999-03-08 2003-02-13 Cesaroni Anthony Joseph Laser bonding of heat exchanger tubes
JP2003315705A (ja) * 2002-04-25 2003-11-06 Seiko Instruments Inc 光スイッチ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0627641A1 (fr) * 1993-05-14 1994-12-07 The Furukawa Electric Co., Ltd. Arrangement de fibres optiques et procédé de sa fabrication
US5595669A (en) * 1993-08-18 1997-01-21 Alcatel N.V. Method of forming coupling diopters at the ends of optical fibers
FR2741455A1 (fr) * 1995-11-21 1997-05-23 Alcatel Optronics Procede de formation d'une nappe de fibres optiques inclinees a dioptres de couplage
US5996376A (en) * 1997-04-11 1999-12-07 Digital Optics Corporation Methods of forming optical rods including three-dimensional patterns on end faces thereof
JP2003098525A (ja) * 2001-09-26 2003-04-03 Seiko Epson Corp 液晶表示装置並びに電子機器

Also Published As

Publication number Publication date
WO2005067676A3 (fr) 2006-03-02
AU2005204571A1 (en) 2005-07-28
WO2005067676A2 (fr) 2005-07-28
AU2005204571B2 (en) 2008-06-26
TW200532262A (en) 2005-10-01
EP1702226A2 (fr) 2006-09-20
CA2552720C (fr) 2010-03-23
JP2007518140A (ja) 2007-07-05
KR20060108762A (ko) 2006-10-18
CA2552720A1 (fr) 2005-07-28
TWI282447B (en) 2007-06-11

Similar Documents

Publication Publication Date Title
MXPA06007898A (es) Fibra optica con punta de lente y metodo para hacer la misma.
US9784930B2 (en) Optical interface device having a curved waveguide using laser writing and methods of forming
EP0558230B1 (fr) Methode pour former une microlentille asymmétrique à l&#39;extrémité d&#39;une fibre optique
US8270784B2 (en) Waveguide device
US6963682B2 (en) Beam altering fiber lens device and method of manufacture
CA2486684C (fr) Troncon comportant une fibre optique
KR20060087564A (ko) 다중모드 접속용 광섬유로 이루어진 섬유 렌즈
US4830453A (en) Device for optically coupling a radiation source to an optical transmission fiber
US7460748B2 (en) Lensed tip optical fiber and method of making the same
KR20050092126A (ko) 작은 형태 인자를 가진 렌즈형 광섬유 및 그 제조방법
Jiang et al. All-polymer photonic devices using excimer laser micromachining
US7062135B2 (en) Method for fabricating curved elements
JP2005519341A (ja) 光ファイバ用バイコニックレンズおよびその製造方法
CA2552720C (fr) Fibre optique a pointe presentant une lentille et son procede de fabrication
JP2008151897A (ja) 光分波装置
WO2015191507A2 (fr) Systèmes et procédés laser de fixation d&#39;une fibre à une ferrule pour connecteurs de fibres optiques
GB2381769A (en) Treatment of laser lightwave circuits
JPH10186165A (ja) 光分波器または光分岐器
CN1692294A (zh) 光纤双锥形透镜和制造方法
EP1351082A1 (fr) Procéde de fabrication des éléments cintrés
Huo et al. A method to fabricate hemispherical micro-lens of optical fiber
JPH0862438A (ja) 光導波路及びその製造方法
GB2381324A (en) Optical fibre coupling
JP2004170578A (ja) 光導波路を用いた光結合方法
WO2016183283A1 (fr) Interconnexion de guide d&#39;ondes optique

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20060707

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

A4 Supplementary search report drawn up and despatched

Effective date: 20090504

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20090727