WO2000019253A1 - Fibre optique - Google Patents
Fibre optique Download PDFInfo
- Publication number
- WO2000019253A1 WO2000019253A1 PCT/JP1999/005256 JP9905256W WO0019253A1 WO 2000019253 A1 WO2000019253 A1 WO 2000019253A1 JP 9905256 W JP9905256 W JP 9905256W WO 0019253 A1 WO0019253 A1 WO 0019253A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical fiber
- optical
- coupling efficiency
- mode field
- improving
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4202—Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
- G02B6/4203—Optical features
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/421—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical component consisting of a short length of fibre, e.g. fibre stub
Definitions
- the present invention relates to an optical fiber having a circular mode field suitable for optically connecting to a light emitting element such as a semiconductor laser diode having an elliptical mode field.
- FIG. 7 shows a connection end of the optical fiber 1 connected to the light emitting element.
- (A) of FIG. 7 is a perspective view of the end of the optical fiber
- (b) of FIG. 7 is a cross-sectional view of the end of the optical fiber cut along the X_z plane shown in (a) of FIG. (C) of the figure is a cross-sectional view of the end of the optical fiber cut along the yz plane shown in (a) of the figure.
- the optical fiber 1 has a circular mode field 2, it is optically connected with a semiconductor laser diode (hereinafter referred to as a semiconductor LD) 3, which is a light emitting element having an elliptical mode field, with high optical coupling efficiency. With an improved connection end for connection.
- a semiconductor laser diode hereinafter referred to as a semiconductor LD
- the end of the optical fiber 1 optically connected to the semiconductor LD 3 is formed in a substantially wedge shape, and the end is formed into a curved surface to form a lens.
- the optical fin 1 is configured to collect light emitted from the semiconductor LD 3 by this lens.
- Optical fiber 1 has several types with different mode field diameters w.
- the semiconductor LD 3 also has a plurality of types in which the wavelength of emitted light and the like differ. In general, the combination of connections for connecting which type of optical fiber 1 to which type of semiconductor LD 3 is determined by specifications.
- each type of optical fiber 1 and semiconductor LD 3 is default.
- Many methods have been proposed to improve the optical coupling efficiency between the optical fiber 1 and the semiconductor LD 3, but none of them has been satisfactory.
- the most requested combination of the optical fiber 1 and the semiconductor LD 3 is a combination of an optical fiber 1 having a mode field diameter w of 6 im and a semiconductor LD 3 having an emission light wavelength of 980 nm. is there.
- the connection end of the optical fiber 1 shown in Fig. 7 has been improved to meet the combination connection of this specification, the optical coupling efficiency with the semiconductor LD 3 has not yet reached a satisfactory level. Les ,.
- the optical coupling efficiency between the optical fiber 1 and the semiconductor LD 3 is determined by the product of the optical coupling efficiency component in the X direction and the optical coupling efficiency component in the y direction shown in (a) of FIG.
- the optical coupling efficiency component in the y direction is calculated by calculating the radius of curvature R of the lens formed at the tip of the optical fiber 1 and the inclined plane 4 forming the substantially wedge-shaped end of the optical fiber 1 shown in (c) of FIG. And the angle (wedge angle) between core axis C and ⁇ .
- the optical coupling efficiency with the semiconductor LD 3 is small because the X—z cross-sectional shape of the end of the optical fiber 1 is rectangular as shown in (b) of FIG. Since it is a batch joint, it is determined by the mode field diameter w of the optical fiber 1 and the type of the semiconductor LD 3.
- the radius of curvature R and the wedge angle ⁇ can be determined appropriately irrespective of the specification of the combination of the semiconductor LD 3 and the optical fiber 1, so that it is easy to improve the optical coupling efficiency component in the y direction. is there.
- the optical coupling efficiency in the X direction is necessarily determined by the specification of the connection combination.
- the optical coupling efficiency in the X direction cannot be improved. For this reason, the overall optical coupling efficiency of the optical fiber 1 and the semiconductor LD 3 has been improved.
- the circular mode field of the optical fiber 1 has a mode field diameter K 1 in the long axis direction (long axis direction of the ellipse) in the elliptical mode field of the semiconductor LD 3.
- the mode field diameter K 1 of the semiconductor LD 3 in the major axis direction of the ellipse is about 4 ⁇
- the mode field diameter w of the optical fiber 1 is about 6 ⁇ m
- the y-z cross-sectional shape of the optical fiber tip is made substantially wedge-shaped, but also the X-z cross-sectional shape of the optical fiber tip. May be formed in a substantially wedge shape.
- tip part of the optical fiber 1 will become complicated, and the manufacturing process of the optical fiber 1 will become complicated.
- the present invention has been made to solve the above-mentioned problem, and its object is to provide an elliptical shape regardless of the specification of a combination of a predetermined type of optical fiber and a type of light emitting element.
- An object of the present invention is to provide a circular mode field optical fiber capable of optically connecting to a light emitting element having a mode field with good optical coupling efficiency. Disclosure of the invention
- the present invention has the following characteristic configuration. That is, in the first configuration of the present invention, in an optical fiber having a circular mode field optically connected to a light emitting element having an elliptical mode field, a light on a side optically connected to the light emitting element is provided. At the end of the fiber, an optical fiber with a circular mode field for improving the optical coupling efficiency is expanded and joined by a fusion bonding technique, and the light emitting element in the optical fiber for improving the optical coupling efficiency is joined. A lens for condensing the light emitted from the light emitting element is formed at the end on the side of the light emitting element.
- the mode field diameter of the optical fiber for improving the optical coupling efficiency has an elliptical mode of the light emitting element. It is characterized by being almost equal to the mode field diameter in the long axis direction in the field.
- each mode of an optical fiber and an optical fiber for improving optical coupling efficiency is provided between the optical fiber and the optical fiber for improving optical coupling efficiency. It is characterized in that at least one coupling optical fiber having a circular mode field diameter different from the field diameter is interposed.
- the mode field diameter of the optical fiber for coupling is the same as the mode field diameter of the optical fiber for improving the optical coupling efficiency and the mode field of the optical fiber. It is characterized in that it has a size within the range of the root diameter and.
- the mode field diameter of the optical fiber for improving optical coupling efficiency is approximately 4 ⁇ m, and the optical coupling efficiency is improved.
- the end of the improving optical fiber on the side of the light emitting element is formed in a substantially wedge shape, and the tip is formed of a lens having a radius of curvature of about 2 ⁇ .
- the angle formed by the inclined plane and the core axis constituting the shape end is substantially 30 degrees.
- an optical fiber for improving optical coupling efficiency is coupled to an end of an optical fiber on a side optically connected to the light emitting element by a fusion bonding technique.
- a lens is formed at the end of the fiber on the light emitting element side, and the circular mode field diameter of the optical fiber for improving the optical coupling efficiency is in the direction of the major axis of the ellipse in the elliptical mode field of the light emitting element. Since the configuration is almost the same as the mode field diameter, the light coupling efficiency between the light emitting element and the optical fiber for improving the light coupling efficiency is very high. Even if the mode field diameter of the optical fiber differs depending on the specification, simply connecting the optical fiber for improving the optical connection efficiency to the end of the optical fiber of the specification can easily connect the light emitting element and the optical fiber. Thus, the optical coupling efficiency can be improved.
- the optical fiber for improving the optical coupling efficiency and the optical fiber are bonded by fusion splicing technology, the size of the mode field at the junction between the optical fiber and the optical fiber for improving the optical coupling efficiency is large. The change is slow. This makes it possible to minimize the optical coupling loss at the joint between the optical fiber and the optical fiber for improving optical coupling efficiency. Furthermore, by fusion bonding, it is possible to increase the strength against bending at the joint between the optical fiber and the optical fiber for improving optical coupling efficiency.
- a high optical coupling efficiency between the light emitting element and the optical fiber for improving optical coupling efficiency can be achieved without making the end of the optical fiber for improving optical coupling efficiency complicated. Therefore, the processing of the end of the optical fiber for improving the optical coupling efficiency is simple. Also, since the optical fiber for improving the optical coupling efficiency can be easily coupled to the optical fiber by the fusion splicing technique, the optical fiber with the optical fiber for improving the optical coupling efficiency can easily increase the optical coupling efficiency as described above. Fiber can be easily manufactured.
- a lens is formed at the end of the optical coupling effect improving optical fiber connected to the light emitting element, and the circular mode field diameter of the optical coupling efficiency improving optical fiber is Since the diameter is almost equal to the mode field diameter in the major axis direction of the elliptical mode field of the light emitting element, the width of the type of light emitting element that can be optically connected with high optical coupling efficiency is large. Can be widened.
- the mode field diameter of the optical fiber for improving the optical coupling efficiency is approximately 4 ⁇ m, and the end of the optical fiber for improving the optical coupling efficiency on the side of the light emitting element is formed in a substantially wedge shape, and the distal end has a curvature.
- the lens has a radius of approximately 2 ⁇ m, and the angle formed by the core axis and the slanting plane that forms the substantially wedge-shaped end of the optical fiber for improving optical coupling efficiency is approximately 30 degrees.
- the emitted light wavelength is often used in recent years.
- Optical connection with very high optical coupling efficiency to 0 nm light emitting element Can be BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is an explanatory view showing an embodiment of an optical fiber according to the present invention
- FIG. 2 is a perspective view showing an end of the optical fiber shown in FIG. 1 on a light emitting element side.
- FIG. 3 is an explanatory view showing a state before the optical fiber for improving the optical coupling efficiency is fusion-spliced to the optical fiber
- FIG. 4 is a curvature of the tip lens of the optical fiber for improving the optical coupling efficiency.
- FIG. 5 is a graph showing an example of a change in optical coupling efficiency between an optical fiber with an optical fiber for improving optical coupling efficiency and a light emitting element with respect to a change in a radius R.
- FIG. 6 is a graph showing an example of a change in the optical coupling efficiency between the light emitting element and the optical fiber with respect to a change in the radius of curvature R of the optical fiber tip lens in the above case.
- FIG. 6 is an explanatory diagram showing another embodiment. Yes, Fig. 7 shows an example of optical fiber with lens FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 shows a cross-sectional view of an end of an optical fiber that is characteristic of the embodiment of the present invention, together with an overall image of the optical fiber 1.
- FIG. 2 shows an end of the characteristic optical fiber. A perspective view of the part is shown.
- the sectional view of the end of the optical fiber 1 shown in FIG. 1 is a sectional view of the optical fiber 1 cut along the yz plane shown in FIG.
- the end of the optical fiber 1 on the side of the semiconductor LD 3 having an elliptical mode field diameter is attached to the ellipse of the semiconductor LD 3.
- the optical fiber 1 itself is not a special type, but is a commonly used fiber whose mode field diameter and the like are determined in advance by specifications.
- an optical fiber 5 for improving optical coupling efficiency is joined to the optical fiber 1 by a fusion bonding technique (TEC (Thermal 11 y-diffused Expanded Core) fusion bonding technique).
- TEC Thermal 11 y-diffused Expanded Core
- the core axis C 'of the optical fiber 5 for improving optical coupling efficiency is aligned with the core axis C of the optical fiber 1 and the connection portion of Heating is performed.
- the optical fiber 1 and the optical fiber 5 for improving optical coupling efficiency are fused, and the components of the core of the optical fiber 1 and the components of the core of the optical coupling efficiency improving optical fiber 5 are combined. Diffuse each other.
- the core expands, and the mode field 2 at the junction between the optical fiber 1 and the optical fiber 5 for improving the optical coupling efficiency increases rapidly as shown in Fig. 3. Instead, it changes slowly as shown in FIG. As a result, the optical junction loss at the junction between the optical fiber 1 and the optical fiber 5 for improving the optical coupling efficiency can be kept low.
- the end of the optical fiber 5 for improving the optical coupling efficiency on the semiconductor LD 3 side is formed in a substantially wedge shape, and the tip is a lens. It is processed (processed into a lens shape).
- the radius of curvature R of the lens at the tip is a value that can maximize the optical coupling efficiency between the semiconductor LD 3 and the optical fiber 5 for improving optical coupling efficiency.
- the respective values of the wedge angle ⁇ and the radius of curvature R are calculated (simulation ).
- optical fiber of this embodiment is configured as described above, and a specific example will be described below.
- the mode field diameter K 1 in the major axis direction (the major axis direction of the ellipse) in the elliptical mode field is approximately 4 ⁇ m.
- the mode field diameter W 1 force S is approximately 4 ⁇ m (the diameter should be within the range of 3.4 ⁇ ! To 4.6 ⁇ m).
- An optical fiber 5 for improving optical coupling efficiency is coupled by a fusion bonding technique. That is, the optical coupling efficiency improving optical fiber 5 having a circular mode field having substantially the same diameter as the elliptical major axis mode field of the semiconductor LD 3 is coupled to the end of the optical fiber 1.
- Both the wedge angle ⁇ ⁇ ⁇ ⁇ at the substantially wedge-shaped end of the optical coupling efficiency improving optical fiber 5 and the radius of curvature R of the lens at the tip are based on the simulation results.
- the value is set to a value that can maximize the optical coupling efficiency with the optical fiber 5 for improvement.
- the wedge angle ⁇ is about 30 degrees (an angle within the range of 20 degrees to 40 degrees is sufficient)
- the radius of curvature R is about 2 ⁇ (1 5 ⁇ ! ⁇ 2.5
- the radius of curvature should be within the range of 2.5 ⁇ ).
- the end is formed in a substantially wedge shape having an optimum wedge angle ⁇ and a radius of curvature R. Not only is formed, but also the optical coupling efficiency improving optical fiber 5 having a mode field diameter W 1 substantially equal to the mode field diameter K 1 in the major axis direction of the semiconductor LD 3 is connected to the end of the optical fiber 1.
- the optical coupling efficiency between the semiconductor LD 3 and the optical fiber 1 can be significantly increased. This has been confirmed from experiments performed by the present inventors.
- FIG. 4 shows the radius of curvature of the tip of the optical coupling efficiency improving optical fiber 5 in the optical fiber 1 with the optical coupling efficiency improving optical fiber 5 of FIG. 1 which is characteristic of this embodiment.
- the change in the optical coupling efficiency between the optical fiber 1 with the optical fiber 5 for improving the optical coupling efficiency and the semiconductor LD 3 with respect to the change in R is shown for each type of the semiconductor LD 3.
- the optical fiber 5 for improving optical coupling efficiency has a circular mode field diameter W 1 of 4 ⁇ m, and the wedge angle ⁇ at the tip of the optical fiber 5 for improving optical coupling efficiency is approximately 30 °. Degrees.
- FIG. 5 shows a comparative example in which the optical fiber 1 shown in FIG. 7 having a mode field diameter w different from the mode field diameter K 1 in the major axis of the ellipse of the semiconductor LD 3 is directly optically coupled.
- the change in the optical coupling efficiency between the optical fiber 1 and the semiconductor LD 3 with respect to the change in the radius of curvature R of the lens at the tip of the optical fiber is the semiconductor. D 3 for each type.
- the solid curve A shown in FIGS. 4 and 5 represents the experimental result when using the A type semiconductor LD 3
- the solid curve B represents the experimental result when using the B type semiconductor LD 3
- a solid curve C represents an experimental result when a C-type semiconductor LD 3 is used.
- the A-type semiconductor LD 3 is defined as a semiconductor LD 3 having a mode field diameter K s of 1.50 ⁇ in the elliptical short axis direction of the elliptical mode field and a mode field in the elliptical long axis direction.
- ⁇ type semiconductor LD 3 has a mode field diameter K s in the short axis direction of 1.20 im and a long axis direction in the LD type semiconductor LD 3.
- the field diameter Kl is 4.80 ⁇
- the C-type semiconductor LD 3 has a mode axis diameter K s of 1.28 ⁇ in the short axis direction and a mode axis diameter in the long axis direction.
- the radius of curvature R at which the optical coupling efficiency becomes the highest is approximately 2.5 / zm, it is smaller than the optical coupling efficiency of each of the B-type and C-type semiconductor LDs 3. Also, the optical coupling efficiency with respect to the A type is about 10% lower, which indicates that the optical coupling efficiency varies depending on the type of the semiconductor LD 3.
- the optical fiber 1 with the optical coupling efficiency improving optical fiber 5 shown in the present embodiment is more optically coupled to the semiconductor LD 3 than the conventional optical fiber 1 shown in FIG. Efficiency can be increased and high It has become possible to expand the range of types of semiconductor LD 3 that can be optically connected with optical coupling efficiency.
- the optical coupling efficiency improving optical fiber 5 is joined to the end of the optical fiber 1 on the semiconductor LD 3 side. It has a circular mode field diameter W1 substantially equal to the mode field diameter K1 in the major axis direction, and the end of the fiber 5 on the semiconductor LD 3 side is formed in a substantially wedge shape, and the tip is a lens cap. Since the configuration described above is provided, the optical coupling efficiency between the semiconductor LD 3 and the optical fiber 5 for improving optical coupling efficiency becomes very high. This allows the optical coupling efficiency improving optical fiber 5 to be connected to the semiconductor LD 3 end even if the mode field diameter w of the optical fiber 1 is determined by the specifications. The optical coupling efficiency between the optical fiber 1 and the semiconductor LD 3 can be easily increased simply by bonding the optical fiber 1 and the semiconductor LD 3.
- the optical coupling efficiency improving optical fiber 5 is coupled to the end of the optical fiber 1 by using a fusion bonding technique, a mode field is formed at the junction between the optical fiber 1 and the optical coupling efficiency improving optical fiber 5. Will gradually change in size. As a result, the optical coupling loss at the joint between the optical fiber 1 and the optical coupling efficiency improving optical fiber 5 can be suppressed to a very low level. Furthermore, the fusion bonding can increase the strength of the joint between the optical fiber 1 and the optical fiber 5 for improving the optical coupling efficiency against bending.
- the wedge angle ⁇ ⁇ at which the optical coupling efficiency with the semiconductor LD 3 is the highest and the radius of curvature R at the tip are determined to form the substantially wedge-shaped end of the optical fiber 5 for improving optical coupling efficiency.
- the mode field diameter W 1 of the optical fiber 5 for improving optical coupling efficiency is substantially equal to the mode field diameter K 1 of the semiconductor LD 3 in the direction of the major axis of the ellipse, the optical coupling efficiency is high.
- the types of semiconductor LDs 3 that can be used can be widened.
- the allowable width of the mode field diameter W 1 of the optical fiber 5 for improving the optical coupling efficiency that can obtain high optical coupling efficiency is, for example, 3 when the optimal mode field diameter W 1 is 4 ⁇ . . 4 M m ⁇ 4.
- widely cormorants I say in the range of 6 / m
- the allowable width of the wedge angle ⁇ which can obtain a high optical coupling efficiency for example, the optimum wedge angle ⁇ 3 When it is 0 degrees, it is as wide as 20 degrees to 40 degrees.
- the allowable width of the radius of curvature R at which high optical coupling efficiency can be obtained is, for example, 1.5 ⁇ ! When the optimum radius of curvature R is 2 // m. Since the width is as wide as about 2.5 ⁇ , the production yield of the optical fiber 1 with the optical fiber 5 for improving the optical coupling efficiency can be greatly increased.
- the optical fiber 5 for improving the optical coupling efficiency is directly coupled to the optical fiber 1.
- a coupling optical fiber 8 may be provided between the coupling efficiency improving optical fibers 5.
- the coupling optical fiber 8 has a circular mode field, and the mode field diameter W 2 is the mode field diameter W of the optical fiber 5 for improving optical coupling efficiency. 1 and the mode field diameter w of the optical fiber 1, that is, larger than the mode field diameter W 1 of the optical fiber 5 for improving the optical coupling efficiency, and The diameter is smaller than the mode field diameter w of the optical fiber.
- the coupling optical fiber 8 is interposed between the optical fiber 1 and the optical fiber 5 for improving the optical coupling efficiency, the coupling between the coupling optical fiber 8 and the optical fiber 1 and the coupling for the optical fiber 1 are also performed.
- the coupling between the optical fiber 8 and the optical fiber 5 for improving the optical coupling efficiency is performed by a fusion bonding technique.
- the optical junction loss is extremely low. It has a configuration that can be obtained.
- the mode field diameter of the optical fiber 1 is large.
- a coupling optical fiber 8 having a mode field diameter W2 within the range of w and the mode field diameter W1 of the optical coupling efficiency improving optical fiber 5 the light for improving the optical coupling efficiency is improved.
- the change in the size of the mode field at the junction between the fiber 5 and the coupling optical fiber 8 becomes gentle.
- the mode field at the junction between the coupling optical fiber 8 and the optical fiber 1 changes slowly.
- the optical coupling loss is suppressed to be smaller than in a case where the optical fiber 5 for improving the optical coupling efficiency is directly coupled to the optical fiber 1 and the size of the mode field at the junction changes suddenly. It is possible.
- an optical fiber 1 with an optical coupling efficiency improving optical fiber 5 in which an optical coupling efficiency improving optical fiber 5 is coupled to an optical fiber 1 having a mode field diameter w of 6 ⁇ m has already been manufactured.
- the mode field diameter is added to the optical field 1 with the optical coupling efficiency improvement 5 above.
- an optical fiber having a w of 8 ⁇ m an optical fiber having a required mode field diameter of 8 ⁇ m having high optical coupling efficiency can be easily provided.
- the optical fiber having the mode field diameter of 6 / m functions as the coupling optical fiber.
- the mode field diameter W2 of the coupling optical fiber 8 is the same as the mode field diameter w of the optical fiber 1 and the mode field diameter W1 of the optical fiber 5 for improving optical coupling efficiency.
- the mode field diameters W 1 and w of the optical fiber 1 and the optical fiber 5 for improving the optical coupling efficiency may be larger than the diameter (W in FIG. 6). b)) or smaller.
- the mode coupling diameter W 1 of the optical fiber 5 for improving optical coupling efficiency was smaller than the mode field diameter w of the optical coupling 1.
- the mode field diameter W 1 of the optical fiber 5 for improving the optical coupling efficiency corresponds to the mode field diameter K 1 in the elliptical major axis direction of the semiconductor LD 3 to be optically connected.
- the mode field diameter W 1 of the optical fiber 5 for improving the optical coupling efficiency may be larger than the mode field diameter w of the optical field 1 depending on the mode field diameter K 1 of the optical fiber 5. .
- the optical fiber 5 for improving the optical coupling efficiency and the optical fiber for coupling 8 need only have a circular mode field diameter.
- An optical fiber or the like is used.
- the optical fiber according to the present invention is suitable for being applied as an optical fiber for efficiently optically connecting to a light emitting element such as a semiconductor LD in the field of optical communication and other optical signal processing. .
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99944843A EP1046935A4 (en) | 1998-09-29 | 1999-09-27 | OPTICAL FIBER |
CA002309029A CA2309029A1 (en) | 1998-09-29 | 1999-09-27 | Optical fiber |
JP2000572704A JP4297312B2 (ja) | 1998-09-29 | 1999-09-27 | 光ファイバ |
US09/565,064 US6332053B1 (en) | 1998-09-29 | 2000-05-05 | Optical fiber |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10/291525 | 1998-09-29 | ||
JP29152598 | 1998-09-29 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/565,064 Continuation US6332053B1 (en) | 1998-09-29 | 2000-05-05 | Optical fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000019253A1 true WO2000019253A1 (fr) | 2000-04-06 |
Family
ID=17770038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/005256 WO2000019253A1 (fr) | 1998-09-29 | 1999-09-27 | Fibre optique |
Country Status (5)
Country | Link |
---|---|
US (1) | US6332053B1 (ja) |
EP (1) | EP1046935A4 (ja) |
JP (1) | JP4297312B2 (ja) |
CA (1) | CA2309029A1 (ja) |
WO (1) | WO2000019253A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6488567B1 (en) | 2000-11-09 | 2002-12-03 | Axsun Technologies, Inc. | System and method for automated fiber polishing |
US20040096174A1 (en) * | 2002-05-16 | 2004-05-20 | Kanishka Tankala | Optical fiber having an expanded mode field diameter and methods of providing such a fiber |
JP3888942B2 (ja) * | 2002-07-29 | 2007-03-07 | 昭和電線デバイステクノロジー株式会社 | 光ファイバ部品 |
US6822190B2 (en) | 2002-12-12 | 2004-11-23 | 3M Innovative Properties Company | Optical fiber or waveguide lens |
CN1742220A (zh) * | 2003-01-23 | 2006-03-01 | 康宁股份有限公司 | 小型化的光纤透镜及其制造方法 |
US7421186B2 (en) * | 2005-01-10 | 2008-09-02 | Biolase Technology, Inc. | Modified-output fiber optic tips |
JP4702301B2 (ja) | 2007-02-15 | 2011-06-15 | トヨタ自動車株式会社 | 車両懸架装置 |
EP2678726B1 (en) | 2011-02-17 | 2017-06-28 | CommScope Connectivity Belgium BVBA | Portable device for attaching a connector to an optical fiber |
US11467357B2 (en) * | 2020-12-22 | 2022-10-11 | Lumentum Operations Llc | Emitter module |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2077943A (en) * | 1980-06-11 | 1981-12-23 | Kokusai Denshin Denwa Co Ltd | Coupling system for output light of a semiconductor laser |
US4795228A (en) * | 1985-12-13 | 1989-01-03 | Siemens Aktiengesellschaft | Fiber taper particularly useful for coupling a monomode fiber to a semiconductor laser |
JPH05134132A (ja) * | 1991-04-11 | 1993-05-28 | Furukawa Electric Co Ltd:The | 光フアイバーコンバータ及びその使用方法 |
EP0558230A1 (en) * | 1992-02-28 | 1993-09-01 | AT&T Corp. | Microlenses for coupling optical fibers to elliptical light beams |
JPH05288968A (ja) * | 1992-04-06 | 1993-11-05 | Showa Electric Wire & Cable Co Ltd | レーザ入力用光ファイバ |
JPH0682663A (ja) * | 1992-09-03 | 1994-03-25 | Nippon Telegr & Teleph Corp <Ntt> | 光ファイバ端面部の加工方法 |
US5301252A (en) * | 1991-09-26 | 1994-04-05 | The Furukawa Electric Company, Ltd. | Mode field conversion fiber component |
EP0689072A1 (en) * | 1994-06-22 | 1995-12-27 | Corning Incorporated | Anamorphic microlens for coupling optical fibers to elliptical light beams |
JPH08190030A (ja) * | 1995-01-11 | 1996-07-23 | Furukawa Electric Co Ltd:The | 分散補償光ファイバの接続構造および接続方法 |
EP0802433A1 (en) * | 1994-09-16 | 1997-10-22 | Namiki Seimitsu Houseki Kabushiki Kaisha | Optical fiber with lens and method of manufacturing the same |
JPH10111417A (ja) * | 1996-10-04 | 1998-04-28 | Kyowa Densen Kk | 光ファイバ心線とその端面加工法 |
JPH10206659A (ja) * | 1997-01-17 | 1998-08-07 | Furukawa Electric Co Ltd:The | 波長分散を有する光ファイバと分散補償光ファイバの接続部 |
JPH10307230A (ja) * | 1997-05-07 | 1998-11-17 | Furukawa Electric Co Ltd:The | レンズ付き光ファイバ |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58158620A (ja) * | 1982-03-17 | 1983-09-20 | Hitachi Ltd | 光通信装置およびこれに用いる光フアイバならびに光フアイバの加工方法 |
DE3617799A1 (de) * | 1986-05-27 | 1987-12-03 | Standard Elektrik Lorenz Ag | Optischer sender |
DE69807972T2 (de) * | 1997-04-15 | 2003-06-05 | Sumitomo Electric Industries | Optisches Modul |
-
1999
- 1999-09-27 JP JP2000572704A patent/JP4297312B2/ja not_active Expired - Lifetime
- 1999-09-27 CA CA002309029A patent/CA2309029A1/en not_active Abandoned
- 1999-09-27 EP EP99944843A patent/EP1046935A4/en not_active Withdrawn
- 1999-09-27 WO PCT/JP1999/005256 patent/WO2000019253A1/ja not_active Application Discontinuation
-
2000
- 2000-05-05 US US09/565,064 patent/US6332053B1/en not_active Expired - Lifetime
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2077943A (en) * | 1980-06-11 | 1981-12-23 | Kokusai Denshin Denwa Co Ltd | Coupling system for output light of a semiconductor laser |
US4795228A (en) * | 1985-12-13 | 1989-01-03 | Siemens Aktiengesellschaft | Fiber taper particularly useful for coupling a monomode fiber to a semiconductor laser |
JPH05134132A (ja) * | 1991-04-11 | 1993-05-28 | Furukawa Electric Co Ltd:The | 光フアイバーコンバータ及びその使用方法 |
US5301252A (en) * | 1991-09-26 | 1994-04-05 | The Furukawa Electric Company, Ltd. | Mode field conversion fiber component |
EP0558230A1 (en) * | 1992-02-28 | 1993-09-01 | AT&T Corp. | Microlenses for coupling optical fibers to elliptical light beams |
JPH05288968A (ja) * | 1992-04-06 | 1993-11-05 | Showa Electric Wire & Cable Co Ltd | レーザ入力用光ファイバ |
JPH0682663A (ja) * | 1992-09-03 | 1994-03-25 | Nippon Telegr & Teleph Corp <Ntt> | 光ファイバ端面部の加工方法 |
EP0689072A1 (en) * | 1994-06-22 | 1995-12-27 | Corning Incorporated | Anamorphic microlens for coupling optical fibers to elliptical light beams |
EP0802433A1 (en) * | 1994-09-16 | 1997-10-22 | Namiki Seimitsu Houseki Kabushiki Kaisha | Optical fiber with lens and method of manufacturing the same |
JPH08190030A (ja) * | 1995-01-11 | 1996-07-23 | Furukawa Electric Co Ltd:The | 分散補償光ファイバの接続構造および接続方法 |
JPH10111417A (ja) * | 1996-10-04 | 1998-04-28 | Kyowa Densen Kk | 光ファイバ心線とその端面加工法 |
JPH10206659A (ja) * | 1997-01-17 | 1998-08-07 | Furukawa Electric Co Ltd:The | 波長分散を有する光ファイバと分散補償光ファイバの接続部 |
JPH10307230A (ja) * | 1997-05-07 | 1998-11-17 | Furukawa Electric Co Ltd:The | レンズ付き光ファイバ |
Non-Patent Citations (4)
Title |
---|
IRIE Y, ET AL.: "OVER 200MW 980NM PUMP LASER DIODE MODULE USING OPTIMIZED HIGH-COUPLING LENSED FIBER", OFC/IOOC '99 OPTICAL FIBER COMMUNICATION CONFERENCE / INTERNATIONAL CONFERENCE ON INTEGRATED OPTICS AND OPTICAL FIBER COMMUNICATION. SAN DIEGO, CA, FEB. 21 - 26, 1999., NEW YORK, NY : IEEE., US, vol. 02, 1 February 1999 (1999-02-01), US, pages 238 - 240, XP002925782, ISBN: 978-0-7803-5430-2 * |
LIE Y, KIMURA T, SHIMIZA T: "TRAPEZOIDMICROLERSES FOR LASER DIODE TO FIBER COUPLING", ELECTRONICS SOCIETY MEETING, XX, XX, 1 January 1997 (1997-01-01), XX, pages 214, XP002925781 * |
S. VIRENDRA ET AL.: "Efficient Power Coupling from a 980-nm, Broad-Area Laser to a Single-Mode Fiber Using a Wedge-Shaped Fiber Endface", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 8, no. 9, September 1990 (1990-09-01), pages 1313 - 1318, XP002925780 * |
See also references of EP1046935A4 * |
Also Published As
Publication number | Publication date |
---|---|
US6332053B1 (en) | 2001-12-18 |
EP1046935A1 (en) | 2000-10-25 |
EP1046935A4 (en) | 2001-09-26 |
CA2309029A1 (en) | 2000-04-06 |
JP4297312B2 (ja) | 2009-07-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2709388B2 (ja) | 光ファイバ接続方法および接続構造ならびに光ファイバ接続構造の加工方法 | |
US5446816A (en) | Optical fiber having a lens formed at an end thereof | |
US6094515A (en) | Optical module | |
WO2000019253A1 (fr) | Fibre optique | |
US6902327B1 (en) | Apparatus and method for laser welding a ferrule to a fiber optic cable | |
JPH08136772A (ja) | 光源結合用光ファイバインターフェイスおよびその製造方法 | |
US6687434B2 (en) | Optical element having inclined surface | |
EP1298476A3 (en) | Optical transmission module | |
KR101802985B1 (ko) | 광학적접착을 이용한 광섬유 레이저 출력장치 | |
JPH1039162A (ja) | 光半導体装置並びに半導体受光素子および光ファイバーの形成方法 | |
JP2000304965A (ja) | 端部レンズ付きファイバ | |
JP2007500870A (ja) | 形状因子が小さいレンズ付ファイバ及びその作成方法 | |
JPH0735958A (ja) | 並列伝送モジュール | |
JP2009008766A (ja) | 光モジュール | |
US5959315A (en) | Semiconductor to optical link | |
JPS58211728A (ja) | 光フアイバ結合装置 | |
JPS61169804A (ja) | 光フアイバコネクタ | |
JPS59226310A (ja) | 光結合方式 | |
JP2008299303A (ja) | レンズ付き光ファイバとその製造方法 | |
JP2595070Y2 (ja) | 光導波路の接続構造 | |
JP2002350681A (ja) | 光コネクタ用フェルール及び光コネクタ | |
US20140308001A1 (en) | Optical Fibre and Method of Fabricating a Coupling Device Therefor | |
JP4767789B2 (ja) | 光部品の製造方法 | |
JPS6169008A (ja) | 光結合装置の製造方法 | |
JPH09138326A (ja) | 光半導体モジュール |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 1999944843 Country of ref document: EP |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
ENP | Entry into the national phase |
Ref document number: 2309029 Country of ref document: CA Ref country code: CA Ref document number: 2309029 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09565064 Country of ref document: US |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 1999944843 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1999944843 Country of ref document: EP |