WO1999042869A1 - Low slope dispersion managed waveguide - Google Patents
Low slope dispersion managed waveguide Download PDFInfo
- Publication number
- WO1999042869A1 WO1999042869A1 PCT/US1999/003403 US9903403W WO9942869A1 WO 1999042869 A1 WO1999042869 A1 WO 1999042869A1 US 9903403 W US9903403 W US 9903403W WO 9942869 A1 WO9942869 A1 WO 9942869A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- waveguide
- dispersion
- fiber
- range
- fiber component
- Prior art date
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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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
- G02B6/02219—Characterised by the wavelength dispersion properties in the silica low loss window around 1550 nm, i.e. S, C, L and U bands from 1460-1675 nm
- G02B6/02228—Dispersion flattened fibres, i.e. having a low dispersion variation over an extended wavelength range
- G02B6/02233—Dispersion flattened fibres, i.e. having a low dispersion variation over an extended wavelength range having at least two dispersion zero wavelengths
-
- 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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
- G02B6/02219—Characterised by the wavelength dispersion properties in the silica low loss window around 1550 nm, i.e. S, C, L and U bands from 1460-1675 nm
- G02B6/02247—Dispersion varying along the longitudinal direction, e.g. dispersion managed fibre
-
- 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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
- G02B6/02219—Characterised by the wavelength dispersion properties in the silica low loss window around 1550 nm, i.e. S, C, L and U bands from 1460-1675 nm
- G02B6/02252—Negative dispersion fibres at 1550 nm
- G02B6/02261—Dispersion compensating fibres, i.e. for compensating positive dispersion of other fibres
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
- G02B6/03638—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 3 layers only
- G02B6/03644—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 3 layers only arranged - + -
-
- 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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
- G02B6/03661—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 4 layers only
- G02B6/03666—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 4 layers only arranged - + - +
-
- 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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
- G02B6/02285—Characterised by the polarisation mode dispersion [PMD] properties, e.g. for minimising PMD
-
- 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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/028—Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
- G02B6/0281—Graded index region forming part of the central core segment, e.g. alpha profile, triangular, trapezoidal core
Definitions
- the present invention is directed to a single mode optical waveguide fiber designed for long repeater spacing, high data rate telecommunication systems.
- the single mode waveguide combines excellent bend resistance, low attenuation, low dispersion and low dispersion slope, features that are desired for long distance transmission applications.
- the segment radius may be conveniently defined in a number of ways, as will be seen in the description of Fig. 1 below.
- Figs. 1-3 from which Tables 1 & 2 are derived, the radii of the index profile segments are defined as follows, where the reference is to a chart of ⁇ % vs. waveguide radius:
- the width, w, of a segment is taken to be the distance between the inner and outer radius of the segment. It is understood that the outer radius of a segment corresponds to the inner radius of the next segment.
- ⁇ % 100 x (n-i 2 - n 2 )l2r ⁇ 2 , where ⁇ is the maximum refractive index of the index profile segment 1 , and n 2 is a reference refractive index which is taken to be, in this application, the refractive index of the clad layer.
- refractive index profile or simply index profile is the relation between
- ⁇ % refractive index and radius over a selected portion of the core.
- index profiles include a step index, triangular, trapezoidal, and rounded step index, in which the rounding is typically due to dopant diffusion in regions of rapid refractive index change.
- Total dispersion is defined as the algebraic sum of waveguide dispersion and material dispersion. Total dispersion is sometimes called chromatic dispersion in the art. The units of total dispersion are ps/nm-km.
- the bend test used is 5 turns of the waveguide fiber around a 20 mm diameter mandrel, a more demanding test which is required for the more severe operating environment of the present waveguide fiber.
- One aspect of the present invention relates to a single mode optical waveguide comprising a first fiber component segment having a positive dispersion and a positive dispersion slope, and a second fiber component segment which has a negative dispersion and a negative dispersion slope, wherein the waveguide alternates along its length between segments of the first fiber component and the second fiber component, and wherein the first fiber component segment has a length which is at least two times the length of the second fiber component segment.
- the waveguide is optimized for the lower attenuation operating wavelength window around 1550 nm, i.e., in the window between about 1520 to 1625 nm.
- the waveguide in accordance with the invention may be comprised of a unitary fiber having the various first and second segments therein, e.g., alternating sections of positive and negative dispersion and dispersion slope.
- the waveguide may be comprised of a cable in which the various fiber component sections are connected along the length of the cable.
- Another aspect of the present invention relates to a single mode optical waveguide which manages fiber chromatic dispersion by providing a small total dispersion and a low dispersion slope.
- Preferred waveguides in accordance with the invention exhibit a dispersion over the range of 1520 to 1625 nm which at all times has a magnitude which is less than 2, and more preferably is less than 1 ps/nm 2 -km.
- the total dispersion of the waveguide fiber is in the range of about -2.0 to +2.0, more preferably about -1.0 to +1.0, and most preferably about -0.5 to +0.5 ps/nm-km at 1550 nm.
- the n, ⁇ j %, and the refractive index profiles of the various positive and negative dispersion segments are also selected to provide a total attenuation at 1550 nm no greater than 0.25 dB/km. 5
- the waveguides in accordance with the invention are also compatible with optical amplifiers.
- cut off wavelength of fiber in cabled form is less than 1520 nm.
- An added benefit is a polarization mode dispersion less than about .5 ps/(km) 1/2 , more preferably less than .3 ps/(km) 1/2 and typically about 0J ps/(km) 1 2 .
- Fig. 1 illustrates a negative dispersion fiber segment profile for use in accordance with the invention.
- Fig. 2 illustrates an alternative negative dispersion fiber segment index profile in accordance with the invention.
- Fig. 3 illustrates an alternative and preferred negative dispersion fiber segment profile.
- Fig. 4 illustrates the dispersion characteristics of a alternating +D and -
- Fig. 5 illustrates the dispersion vs. distance of a dispersion flattened and dispersion managed fiber in accordance with the invention.
- Fig. 6 illustrates the dispersion vs. wavelength curve for a dispersion flattened and managed fiber in accordance with the present invention.
- a low slope and dispersion managed fiber optical waveguide is accomplished by incorporating alternating segments of a first fiber component having a positive dispersion and positive dispersion slope, and a second fiber component having a negative dispersion and a negative dispersion slope, wherein the first fiber component has a length which is at least two times, more preferably at least three times and most preferably at least five times the length of the second fiber component.
- the waveguides of the present invention may be in the form of a unitary fiber having alternating sections of positive and negative dispersion and dispersion slope.
- a fiber could be manufactured, for example, by assembling alternating core tablets having desired index profiles within a tube or other support device. The alternating core tablets would create the desired alternating positive and negative dispersion characteristics.
- the tube containing these alternating component tablets can then be overclad with a silica cladding layer, and the resultant preform consolidated and drawn into a continuous fiber which exhibits alternating sections of positive and negative dispersion and dispersion slope along its length.
- Such manufacturing techniques are further disclosed, for example, in U.S. Patent Application Serial No.
- the waveguide consists of a cabled waveguide.
- the wvaeguide may consist of a first fiber component having positive dispersion and positive dispersion slope, having a length of at least 50 km, and more preferably at least 75 km in length, and the second fiber component (negative dispersion and negative dispersion slope) having a length of less than 20 km, but more preferably less than 15 km in length.
- Such a cabled waveguide may be disposed between amplifiers in an optical fiber communication system.
- the second fiber component can alternatively be placed in the amplifier side inside the amplifier or amplifier module itself.
- the first fiber component i.e., that having positive dispersion and positive dispersion slope
- SMF-28 has a total dispersion of 17 ps/nm.km, and a dispersion slope of 0.06 ps/nm 2 .km at 1550 nm.
- a variety of fiber profiles can be employed to provide the second fiber component which has a negative dispersion and negative dispersion slope.
- the negative component fiber segment has at three or four segments to the profile.
- Fig. 1 illustrates one embodiment of such a preferred three segment profile for the negative dispersion, negative dispersion slope fiber segment component.
- the profile is Fig. 1 consists of a first central major index profile 10 of outer radius p,, surrounded by a first annular segment 12 of outer radius r 2 , surrounded by second annular segment 14 of outer radius r 3 .
- a variety of profile shapes can be employed, as illustrated, for example, by the dashed lines associated with possible profile shapes for the first central major index profile 10 in Fig. 1.
- the novel single mode optical waveguide is characterized by its segmented core design that provides the unusual combination of properties set forth herein. These properties are achieved by selecting a proper refractive index profile shape of each of the segments and selecting the appropriate relative refractive index delta, ⁇ s %, and radial extent, ⁇ , of the segments.
- the profile parameters are known to interact. For example, a center region ⁇ - profile having an ⁇ of about 1 , will have a radius different from a center region having a trapezoidal index to provide fibers having essentially identical properties.
- the index profiles of the respective segments can be virtually any particular shape, including an ⁇ -profile, a step index profile, or a trapezoidal profile. Unless special steps are inserted in the process, the refractive index profiles will be rounded at points where the refractive index changes sharply. The rounding is due to diffusion of the dopant materials used to change the base glass refractive index. Thus any of these index profiles may be rounded at particular points. For example, a step index profile, having a positive ⁇ % will typically have rounded upper and lower corners.
- the fiber may or may not include a central recessed index area, such as is commonly caused by migration of the germania dopant.
- Fig. 2 illustrates such a four segment fiber core profile which is useful as a negative dispersion slope dispersion fiber segment in accordance with the invention.
- the profile illustrated in Fig. 2 incorporates two index depressed regions 12 and 16.
- any of the profiles disclosed herein may also include a centerline dip section, which is an area of depressed relative refractive index which is less than the peak delta of the first major core segment.
- Such centerline dips are commonly caused by so called burn-out, or migration of dopant ions, which sometimes occurs during manufacture of optical fiber waveguides.
- the waveguides in accordance with the invention preferably exhibit a dispersion over the range of 1520 to 1625 nm which at all times has a magnitude which is less than 2, and more preferably less than 1 ps/nm 2 -km.
- the total dispersion of the waveguide fiber is in the range of about -2.0 to +2.0, more preferably about -1.0 to +1.0, and most preferably about -0.5 to +0.5 ps/nm-km at 1550 nm.
- the ⁇ , ⁇ %, and the refractive index profiles of the various positive and negative dispersion segments are also selected to provide a total attenuation at 1550 nm no greater than 0.25 dB/km.
- cut off wavelength of fiber in cabled form is less than 1520 nm.
- An added benefit is a polarization mode dispersion less than about .5 ps/(km) 1/2 more preferably less than .3 ps/(km) .1/2
- One particularly preferred dispersion managed waveguide of the present invention manages fiber chromatic dispersion by providing a negative total dispersion as well as a low dispersion slope.
- the total dispersion of the waveguide fiber be negative, so that the linear dispersion cannot counteract the non-linear self phase modulation which occurs for high power signals.
- the waveguides described herein are suitable for use in high power and long distance transmission applications, including conventional RZ (return to zero) or NRZ (non-return to zero), as well as soliton transmission applications.
- the definition of high power and long distance is meaningful only in the context of a particular telecommunication system wherein a bit rate, a bit error rate, a multiplexing scheme, and perhaps optical amplifiers are specified. There are additional factors, known to those skilled in the art, which have impact upon the meaning of high power and long distance. However, for most purposes, high power is an optical power greater than about 10 mW per channel. In some applications, signal power levels of 1 mW or less are still sensitive to non-linear effects, so that A eff is still an important consideration in such lower power systems.
- a long distance is one in which the distance between electronic regenerators can be in excess of 100 to 120 km.
- the regenerators are to be distinguished from repeaters which make use of optical amplifiers. Repeater 11
- spacing especially in high data density systems, can be less than half the regenerator spacing.
- FIG. 3 A particularly preferred three segment refractive index profile for use as the negative dispersion, negative slope fiber segment is illustrated in Fig. 3. This particular profile exhibits a dispersion of -35.47 ps/nm.km and slope of - 0J018 ps/nm 2 . km at 1550 nm.
- the cutoff wavelength is 1.18 micron and pin- array bend loss of 1.3 dB, MFD of 4.8 micron and Deff of 4.68 micron at 1550 nm.
- Fig. 4 illustrates the dispersion characteristics of achieved when a positive dispersion fiber component, in this case SMF-28, is combined with the negative dispersion fiber component of the variety disclose in Fig. 3 variety having the following parameters:
- Table III lists the resultant dispersion and dispersion slope properties, as well as the ratio of dispersion to dispersion slope which is achieved by this combination of alternating fiber segments.
- FIG. 5 illustrates the axial design of the resultant waveguide fiber, in terms of dispersion over waveguide length (nm.km) for the resultant dispersion flattened, dispersion managed fiber.
- Fig. 6 illustrates the resultant total dispersion characteristics of the dispersion flattened and managed fiber.
- L p /L n is about 2:1 in this example.
- the period L n +L p is approximately 3 km. As can be seen in Fig. 6., for this design example, total dispersion is much less than 1 ps/nm.km, and in fact is less than about 0.5 ps/nm.km, from 1520 to 1620 nm. This is consistent with the low loss window of single mode fibers. According to the loss spectrum of a conventional single mode fiber, the attenuation is less than .22 dB/km from
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99913812A EP1066540A4 (en) | 1998-02-23 | 1999-02-17 | Low slope dispersion managed waveguide |
AU31805/99A AU750557B2 (en) | 1998-02-23 | 1999-02-17 | Low slope dispersion managed waveguide |
JP2000532749A JP4208415B2 (en) | 1998-02-23 | 1999-02-17 | Low gradient dispersion management waveguide |
CA002318423A CA2318423A1 (en) | 1998-02-23 | 1999-02-17 | Low slope dispersion managed waveguide |
BR9907943-7A BR9907943A (en) | 1998-02-23 | 1999-02-17 | Waveguide checked for low tilt dispersion |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7575498P | 1998-02-23 | 1998-02-23 | |
US60/075,754 | 1998-02-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999042869A1 true WO1999042869A1 (en) | 1999-08-26 |
Family
ID=22127778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/003403 WO1999042869A1 (en) | 1998-02-23 | 1999-02-17 | Low slope dispersion managed waveguide |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1066540A4 (en) |
JP (1) | JP4208415B2 (en) |
KR (1) | KR100703246B1 (en) |
CN (1) | CN1120379C (en) |
AU (1) | AU750557B2 (en) |
BR (1) | BR9907943A (en) |
CA (1) | CA2318423A1 (en) |
ID (1) | ID27455A (en) |
WO (1) | WO1999042869A1 (en) |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1081514A1 (en) * | 1999-09-02 | 2001-03-07 | Alcatel | Optical fibre for compensating the chromatic dispersion of a positive chromatic dispersion optical fibre |
DE10010783A1 (en) * | 2000-03-04 | 2001-09-06 | Deutsche Telekom Ag | Single-mode optical fibre, has refractive index in second radial section that is less than that of outer section |
US6301419B1 (en) | 1998-12-03 | 2001-10-09 | Sumitomo Electric Industries, Ltd. | Dispersion-equalizing optical fiber and optical transmission line including the same |
FR2815420A1 (en) * | 2000-10-16 | 2002-04-19 | Cit Alcatel | Fibre optic mean/peak chromatic dispersion compensation having line fibre section and compensation section with specific compensation derived relationship chromatic dispersion/derivation over line fibre section/wavelength field. |
FR2815418A1 (en) * | 2000-10-16 | 2002-04-19 | Cit Alcatel | Optical fibre for chromatic dispersion compensation, uses rectangular profile step index with slice to provide negative chromatic dispersion |
EP1202088A1 (en) * | 2000-10-26 | 2002-05-02 | Alcatel | Dispersion compensating fiber for the compensation of an optical fiber transmission line with positive chromatical dispersion |
WO2002054632A1 (en) * | 2000-12-28 | 2002-07-11 | Pirelli S.P.A. | Dispersion-managed optical soliton transmission system |
EP1249721A2 (en) * | 2001-04-13 | 2002-10-16 | The Furukawa Electric Co., Ltd. | Dispersion management optical transmission system and optical transmission line |
FR2828939A1 (en) * | 2001-08-27 | 2003-02-28 | Cit Alcatel | OPTICAL FIBER FOR WAVELENGTH MULTIPLEXING TRANSMISSION SYSTEM |
US6556758B2 (en) | 1999-04-16 | 2003-04-29 | Sumitomo Electric Industries, Ltd. | Optical fiber and optical transmission line including the same |
WO2003071325A1 (en) * | 2002-02-15 | 2003-08-28 | Corning Incorporated | Low slope dispersion shifted optical fiber |
US6618532B1 (en) | 1999-09-17 | 2003-09-09 | Sumitomo Electric Industries, Ltd. | Optical transmission line |
US6640038B2 (en) | 2000-05-31 | 2003-10-28 | Corning Incorporated | Dispersion managed fibers having reduced sensitivity to manufacturing variabilities |
JP2004500603A (en) * | 2000-03-30 | 2004-01-08 | コーニング・インコーポレーテッド | Dispersion gradient compensated optical waveguide fiber |
EP1382981A1 (en) * | 2002-07-18 | 2004-01-21 | Alcatel | Dispersion managed optical fiber |
US6768847B2 (en) | 2002-03-15 | 2004-07-27 | Fitel Usa Corp. | Dispersion compensating module and fiber for control of residual dispersion |
JP2004530345A (en) * | 2001-03-30 | 2004-09-30 | コーニング・インコーポレーテッド | Optical transmission line and optical transmission system using the same |
US7151880B2 (en) | 2000-12-28 | 2006-12-19 | Prysmian Cavi E Sistemi Energia S.R.L. | Dispersion-managed optical soliton transmission system |
EP1855130A1 (en) | 2002-10-07 | 2007-11-14 | Draka comteq B.V. | Optical fibre with chromatic dispersion compensation. |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5408834B2 (en) * | 2003-10-03 | 2014-02-05 | ドラカ・コムテツク・ベー・ベー | Chromatic dispersion compensating optical fiber |
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US5778128A (en) * | 1996-02-16 | 1998-07-07 | Corning Incorporated | Symmetric, dispersion-managed fiber optic cable and system |
US5781684A (en) * | 1996-12-20 | 1998-07-14 | Corning Incorporated | Single mode optical waveguide having large effective area |
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US5448674A (en) * | 1992-11-18 | 1995-09-05 | At&T Corp. | Article comprising a dispersion-compensating optical waveguide |
AU693329B2 (en) * | 1995-04-13 | 1998-06-25 | Corning Incorporated | Dispersion managed optical waveguide |
US5611016A (en) * | 1996-06-07 | 1997-03-11 | Lucent Technologies Inc. | Dispersion-balanced optical cable |
CA2221737A1 (en) * | 1996-07-31 | 1998-01-31 | Corning Incorporated | Dispersion compensating single mode waveguide |
-
1999
- 1999-02-17 ID IDW20001874A patent/ID27455A/en unknown
- 1999-02-17 BR BR9907943-7A patent/BR9907943A/en not_active Application Discontinuation
- 1999-02-17 CA CA002318423A patent/CA2318423A1/en not_active Abandoned
- 1999-02-17 CN CN99802285A patent/CN1120379C/en not_active Expired - Fee Related
- 1999-02-17 JP JP2000532749A patent/JP4208415B2/en not_active Expired - Fee Related
- 1999-02-17 KR KR1020007009320A patent/KR100703246B1/en not_active IP Right Cessation
- 1999-02-17 AU AU31805/99A patent/AU750557B2/en not_active Ceased
- 1999-02-17 EP EP99913812A patent/EP1066540A4/en not_active Withdrawn
- 1999-02-17 WO PCT/US1999/003403 patent/WO1999042869A1/en active IP Right Grant
Patent Citations (2)
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US5778128A (en) * | 1996-02-16 | 1998-07-07 | Corning Incorporated | Symmetric, dispersion-managed fiber optic cable and system |
US5781684A (en) * | 1996-12-20 | 1998-07-14 | Corning Incorporated | Single mode optical waveguide having large effective area |
Non-Patent Citations (1)
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See also references of EP1066540A4 * |
Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6301419B1 (en) | 1998-12-03 | 2001-10-09 | Sumitomo Electric Industries, Ltd. | Dispersion-equalizing optical fiber and optical transmission line including the same |
US6556755B2 (en) | 1998-12-03 | 2003-04-29 | Sumitomo Electric Industries, Ltd. | Dispersion-equalizing optical fiber and optical transmission line including the same |
US6556758B2 (en) | 1999-04-16 | 2003-04-29 | Sumitomo Electric Industries, Ltd. | Optical fiber and optical transmission line including the same |
US6510268B1 (en) | 1999-09-02 | 2003-01-21 | Alcatel | Optical fiber for compensating the chromatic dispersion of an optical fiber having positive chromatic dispersion |
WO2001016631A1 (en) * | 1999-09-02 | 2001-03-08 | Alcatel | Optical fibre for compensating chromatic dispersion of an optical fibre with positive chromatic dispersion |
FR2799006A1 (en) * | 1999-09-02 | 2001-03-30 | Cit Alcatel | OPTICAL FIBER FOR ONLINE COMPENSATION OF THE CHROMATIC DISPERSION OF AN OPTICAL FIBER WITH POSITIVE CHROMATIC DISPERSION |
EP1081514A1 (en) * | 1999-09-02 | 2001-03-07 | Alcatel | Optical fibre for compensating the chromatic dispersion of a positive chromatic dispersion optical fibre |
JP2003508801A (en) * | 1999-09-02 | 2003-03-04 | アルカテル | Optical fiber for compensating chromatic dispersion of optical fiber having positive chromatic dispersion |
US6618532B1 (en) | 1999-09-17 | 2003-09-09 | Sumitomo Electric Industries, Ltd. | Optical transmission line |
DE10010783A1 (en) * | 2000-03-04 | 2001-09-06 | Deutsche Telekom Ag | Single-mode optical fibre, has refractive index in second radial section that is less than that of outer section |
US6701052B2 (en) | 2000-03-30 | 2004-03-02 | Corning Incorporated | Dispersion slope compensating optical waveguide fiber |
US6829422B2 (en) | 2000-03-30 | 2004-12-07 | Corning Incorporated | Dispersion slope compensating optical waveguide fiber |
JP2004500603A (en) * | 2000-03-30 | 2004-01-08 | コーニング・インコーポレーテッド | Dispersion gradient compensated optical waveguide fiber |
US6640038B2 (en) | 2000-05-31 | 2003-10-28 | Corning Incorporated | Dispersion managed fibers having reduced sensitivity to manufacturing variabilities |
FR2815418A1 (en) * | 2000-10-16 | 2002-04-19 | Cit Alcatel | Optical fibre for chromatic dispersion compensation, uses rectangular profile step index with slice to provide negative chromatic dispersion |
EP1213595A3 (en) * | 2000-10-16 | 2002-07-24 | Alcatel | Chromatic dispersion compensation in a fiber transmission system and compensation fiber |
EP1217399A1 (en) * | 2000-10-16 | 2002-06-26 | Alcatel | Optical fiber for chromatic dispersion compensation of a NZ-DSF-fiber with positive chromatic dispersion |
FR2815420A1 (en) * | 2000-10-16 | 2002-04-19 | Cit Alcatel | Fibre optic mean/peak chromatic dispersion compensation having line fibre section and compensation section with specific compensation derived relationship chromatic dispersion/derivation over line fibre section/wavelength field. |
EP1213595A2 (en) * | 2000-10-16 | 2002-06-12 | Alcatel | Chromatic dispersion compensation in a fiber transmission system and compensation fiber |
US6668120B2 (en) | 2000-10-16 | 2003-12-23 | Alcatel | Fiber for compensating the chromatic dispersion of an NZ-DSF having positive chromatic dispersion |
FR2816065A1 (en) * | 2000-10-26 | 2002-05-03 | Cit Alcatel | OPTICAL FIBER FOR ONLINE COMPENSATION OF THE CHROMATIC DISPERSION OF A POSITIVE CHROMATIC DISPERSION OPTICAL FIBER |
EP1202088A1 (en) * | 2000-10-26 | 2002-05-02 | Alcatel | Dispersion compensating fiber for the compensation of an optical fiber transmission line with positive chromatical dispersion |
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WO2002054632A1 (en) * | 2000-12-28 | 2002-07-11 | Pirelli S.P.A. | Dispersion-managed optical soliton transmission system |
US7151880B2 (en) | 2000-12-28 | 2006-12-19 | Prysmian Cavi E Sistemi Energia S.R.L. | Dispersion-managed optical soliton transmission system |
JP2004530345A (en) * | 2001-03-30 | 2004-09-30 | コーニング・インコーポレーテッド | Optical transmission line and optical transmission system using the same |
EP1249721A3 (en) * | 2001-04-13 | 2004-12-08 | The Furukawa Electric Co., Ltd. | Dispersion management optical transmission system and optical transmission line |
EP1249721A2 (en) * | 2001-04-13 | 2002-10-16 | The Furukawa Electric Co., Ltd. | Dispersion management optical transmission system and optical transmission line |
EP1288685A1 (en) * | 2001-08-27 | 2003-03-05 | Alcatel | Optical fibre for a wavelength division multiplexing transmission system |
FR2828939A1 (en) * | 2001-08-27 | 2003-02-28 | Cit Alcatel | OPTICAL FIBER FOR WAVELENGTH MULTIPLEXING TRANSMISSION SYSTEM |
US6819850B2 (en) | 2001-08-27 | 2004-11-16 | Alcatel | Optical fiber for a wavelength division multiplex transmission system |
US7050687B2 (en) | 2002-02-15 | 2006-05-23 | Corning Incorporated | Low slope dispersion shifted optical fiber |
WO2003071325A1 (en) * | 2002-02-15 | 2003-08-28 | Corning Incorporated | Low slope dispersion shifted optical fiber |
US6768847B2 (en) | 2002-03-15 | 2004-07-27 | Fitel Usa Corp. | Dispersion compensating module and fiber for control of residual dispersion |
US6928222B2 (en) | 2002-07-18 | 2005-08-09 | Alcatel | Dispersion managed optical fiber |
FR2842610A1 (en) * | 2002-07-18 | 2004-01-23 | Cit Alcatel | OPTICAL FIBER WITH DISPERSION MANAGEMENT |
EP1382981A1 (en) * | 2002-07-18 | 2004-01-21 | Alcatel | Dispersion managed optical fiber |
EP1855130A1 (en) | 2002-10-07 | 2007-11-14 | Draka comteq B.V. | Optical fibre with chromatic dispersion compensation. |
EP1855130B1 (en) * | 2002-10-07 | 2011-05-18 | Draka Comteq B.V. | Optical fibre with chromatic dispersion compensation. |
Also Published As
Publication number | Publication date |
---|---|
EP1066540A1 (en) | 2001-01-10 |
CN1288523A (en) | 2001-03-21 |
KR100703246B1 (en) | 2007-04-03 |
JP4208415B2 (en) | 2009-01-14 |
AU750557B2 (en) | 2002-07-25 |
ID27455A (en) | 2001-04-12 |
CA2318423A1 (en) | 1999-08-26 |
BR9907943A (en) | 2000-10-24 |
EP1066540A4 (en) | 2005-05-18 |
CN1120379C (en) | 2003-09-03 |
KR20010041230A (en) | 2001-05-15 |
AU3180599A (en) | 1999-09-06 |
JP2002504702A (en) | 2002-02-12 |
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