AR031517A1 - OPTICAL SYSTEM AND METHOD THAT HAVE LOW LOSS AND NON-LINEAR EFFECTS - Google Patents

OPTICAL SYSTEM AND METHOD THAT HAVE LOW LOSS AND NON-LINEAR EFFECTS

Info

Publication number
AR031517A1
AR031517A1 ARP990106493A ARP990106493A AR031517A1 AR 031517 A1 AR031517 A1 AR 031517A1 AR P990106493 A ARP990106493 A AR P990106493A AR P990106493 A ARP990106493 A AR P990106493A AR 031517 A1 AR031517 A1 AR 031517A1
Authority
AR
Argentina
Prior art keywords
range
dispersion
operating wavelength
linear effects
optical transmission
Prior art date
Application number
ARP990106493A
Other languages
Spanish (es)
Inventor
Giacomo Stefano Roba
Bartolomeo Italo Tirloni
Original Assignee
Pirelli Cavi E Sistemi Spa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pirelli Cavi E Sistemi Spa filed Critical Pirelli Cavi E Sistemi Spa
Publication of AR031517A1 publication Critical patent/AR031517A1/en

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
    • G02B6/02—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
    • G02B6/02004—Optical fibres with cladding with or without a coating characterised by the core effective area or mode field radius
    • G02B6/02009—Large effective area or mode field radius, e.g. to reduce nonlinear effects in single mode fibres
    • G02B6/02014—Effective area greater than 60 square microns in the C band, i.e. 1530-1565 nm
    • 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
    • G02B6/02257—Non-zero dispersion shifted fibres, i.e. having a small negative dispersion at 1550 nm, e.g. ITU-T G.655 dispersion between - 1.0 to - 10 ps/nm.km for avoiding nonlinear effects
    • 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
    • G02B6/02266—Positive dispersion fibres at 1550 nm
    • G02B6/02271—Non-zero dispersion shifted fibres, i.e. having a small positive dispersion at 1550 nm, e.g. ITU-T G.655 dispersion between 1.0 to 10 ps/nm.km for avoiding nonlinear effects
    • 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
    • G02B6/03605—Highest refractive index not on central axis
    • G02B6/03611—Highest index adjacent to central axis region, e.g. annular core, coaxial ring, centreline depression affecting waveguiding
    • 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
    • G02B6/03622—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 2 layers only
    • 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
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29371—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating principle based on material dispersion
    • G02B6/29374—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating principle based on material dispersion in an optical light guide
    • G02B6/29376—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating principle based on material dispersion in an optical light guide coupling light guides for controlling wavelength dispersion, e.g. by concatenation of two light guides having different dispersion properties
    • G02B6/29377—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating principle based on material dispersion in an optical light guide coupling light guides for controlling wavelength dispersion, e.g. by concatenation of two light guides having different dispersion properties controlling dispersion around 1550 nm, i.e. S, C, L and U bands from 1460-1675 nm
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • H04B10/2513—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion
    • H04B10/2525—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion using dispersion-compensating fibres
    • H04B10/25253—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion using dispersion-compensating fibres with dispersion management, i.e. using a combination of different kind of fibres in the transmission system

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

En general, la presente invencion comprende un sistema de transmision optica y un método para la transmision senales opticas por una distancia significativa. En particular, la invencion involucra un aparato y un método para reducir la atenuacion y los efectos no lineales del sistema de transmision optica. De acuerdo con el proposito de la invencion tal como se la representa y se la describe en forma detallada en la presente, la invencion se dirige a una línea de transmision optica que incluye un primer alcance y un segundo alcance de fibras monomodo. La fibra del primer alcance tiene una dispersion negativa, con un valor absoluto que fluctua entre alrededor de 2,5 ps/nm/km y 10 ps/nm/km, en la longitud de onda operativa. El segundo alcance está conectado al primer alcance y tiene una dispersion positiva en la longitud de onda operativa. La dispersion positiva del segundo alcance compensa la dispersion negativa del primer alcance, de manera que la dispersion acumulativa a través de un primer y un segundo alcance sea de aproximadamente cero. Con preferencia, el valor absoluto de la dispersion negativa del primer alcance en la longitud de onda operativa queda comprendido entre alrededor de 3 ps/nm/km y 8 ps/nm/km, con mayor preferencia, entre aproximadamente 4 ps/nm/km y 7 ps/nm/km.In general, the present invention comprises an optical transmission system and a method for the transmission of optical signals over a significant distance. In particular, the invention involves an apparatus and a method for reducing the attenuation and non-linear effects of the optical transmission system. In accordance with the purpose of the invention as it is represented and described in detail herein, the invention is directed to an optical transmission line that includes a first range and a second range of single mode fibers. The first range fiber has a negative dispersion, with an absolute value that fluctuates between about 2.5 ps / nm / km and 10 ps / nm / km, in the operating wavelength. The second range is connected to the first range and has a positive dispersion in the operating wavelength. The positive dispersion of the second range compensates for the negative dispersion of the first range, so that the cumulative dispersion through a first and second range is approximately zero. Preferably, the absolute value of the negative spread of the first range in the operating wavelength is between about 3 ps / nm / km and 8 ps / nm / km, more preferably, between about 4 ps / nm / km and 7 ps / nm / km.

ARP990106493A 1998-12-18 1999-12-17 OPTICAL SYSTEM AND METHOD THAT HAVE LOW LOSS AND NON-LINEAR EFFECTS AR031517A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98124065 1998-12-18

Publications (1)

Publication Number Publication Date
AR031517A1 true AR031517A1 (en) 2003-09-24

Family

ID=8233171

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP990106493A AR031517A1 (en) 1998-12-18 1999-12-17 OPTICAL SYSTEM AND METHOD THAT HAVE LOW LOSS AND NON-LINEAR EFFECTS

Country Status (4)

Country Link
CN (1) CN100501466C (en)
AR (1) AR031517A1 (en)
AU (1) AU779898B2 (en)
BR (1) BR9916365A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114637068B (en) * 2022-03-04 2023-12-19 长飞光纤光缆股份有限公司 Gain-balanced few-mode erbium-doped optical fiber and preparation method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2299473A (en) * 1995-03-27 1996-10-02 Hitachi Cable Broadband long-distance optical fibre communications
US5684909A (en) * 1996-02-23 1997-11-04 Corning Inc Large effective area single mode optical waveguide
US5611016A (en) * 1996-06-07 1997-03-11 Lucent Technologies Inc. Dispersion-balanced optical cable

Also Published As

Publication number Publication date
AU779898B2 (en) 2005-02-17
BR9916365A (en) 2001-12-11
CN1536378A (en) 2004-10-13
AU1980000A (en) 2000-07-12
CN100501466C (en) 2009-06-17

Similar Documents

Publication Publication Date Title
TW359760B (en) Dispersion-shifted fiber
EP1083446A4 (en) Optical transmission line, negative dispersion optical fiber used for the optical transmission line, and optical transmission system comprising optical transmission line
BR9916364A (en) Metropolitan communication system or high-speed optical access, unimodal optical transmission fiber and optical transmission method by wavelength division multiplexing
EP1102114A4 (en) Raman amplification system and optical signal transmission method using the same
DE69930415D1 (en) OPTICAL SYSTEM AND METHOD WITH LOW LOSSES AND NONLINEAR EFFECTS
JP2005509182A5 (en)
EP1186919A4 (en) Optical fiber and optical transmission line comprising the same
US20050025501A1 (en) Unrepeatered optical communication system with suppressed SBS
EP1087549A4 (en) Wdm optical communication system
EP1389841A3 (en) Optical tranmission system, optical transmission line and optical transmitter
AU2001284029A1 (en) Optical transmission link with low slope, raman amplified fiber
AR031517A1 (en) OPTICAL SYSTEM AND METHOD THAT HAVE LOW LOSS AND NON-LINEAR EFFECTS
US6778322B2 (en) Four-wave mixing suppression in Raman amplifiers
AR031515A1 (en) A SINGLE-MODE OPTICAL TRANSMISSION FIBER FOR USE IN A MULTIPLEXION TRANSMISSION SYSTEM WITH DIVISION BY WAVE LENGTH AND A METHOD TO PRODUCE
US6748152B2 (en) Optical transmission system
EP1052528A4 (en) Optical transmission line
JP2004126148A (en) Optical fiber and optical transmission line using the same
JP2000174703A (en) Delection of raman effect with modulation of polarized wave
Chi et al. Stimulated Brillouin scattering suppressed EDFA in a long-haul optical fiber link system
US7274503B2 (en) Distributed raman amplification
Dikmelik et al. Fiber coupling efficiency for free-space optical communication through atmospheric turbulence
DE60120399D1 (en) Optical fiber for wavelength division multiplex transmission system
Lee Compensation characteristics of distorted WDM signals depending on distribution patterns of SMF length and RDPS
AR016083A1 (en) AN OPTICAL PROVISION OF TELECOMMUNICATIONS THAT INCLUDES A TRANSMITTER STATION, AN OPTICAL FIBER TRANSMISSION LINE AND A RECEPTORATIVE OPTIONAL STATION AND A METHOD FOR THE TRANSMISSION OF OPTICAL SIGNALS.
EP1343033A3 (en) Dispersion compensating fiber module, and optical communication system