BR9916365A - Optical transmission line having an operational wavelength, high-speed optical communication system, process of transmitting a signal through a transmission line and optical transmission fiber in a mode housed within a fiber optic cable - Google Patents

Optical transmission line having an operational wavelength, high-speed optical communication system, process of transmitting a signal through a transmission line and optical transmission fiber in a mode housed within a fiber optic cable

Info

Publication number
BR9916365A
BR9916365A BR9916365-9A BR9916365A BR9916365A BR 9916365 A BR9916365 A BR 9916365A BR 9916365 A BR9916365 A BR 9916365A BR 9916365 A BR9916365 A BR 9916365A
Authority
BR
Brazil
Prior art keywords
transmission line
fiber
optical
optical transmission
segment
Prior art date
Application number
BR9916365-9A
Other languages
Portuguese (pt)
Inventor
Bartolomeo Italo Tirloni
Giacomo Stefano Roba
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
Priority claimed from PCT/EP1999/009962 external-priority patent/WO2000038356A1/en
Publication of BR9916365A publication Critical patent/BR9916365A/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

"LINHA DE TRANSMISSãO óPTICA TENDO UMCOMPRIMENTO DE ONDA OPERACIONAL, SISTEMA DECOMUNICAçõES óPTICA DE ALTA VELOCIDADE, PROCESSODE TRANSMITIR UM SINAL ATRAVéS DE UMA LINHA DETRANSMISSãO E FIBRA DE TRANSMISSãO óPTICAUNIMODO ALOJADA DENTRO DE UM CABO DE FIBRASóPTICAS". Um aparelho e processo para transmitir um sinal óptico.A invenção é dirigida a uma linha de transmissão tendo primeiro(16) e segundo (18) segmentos de fibra unimodo. A fibra do primeirosegmento tem uma dispersão negativa com um valor absoluto deentre cerca de 2,5 ps/nm/km com um valor absoluto de entrecerca de 2,5 ps/nm/km e 10 ps/nm/km ao comprimento de ondaoperacional. A dispersão positiva do segundo segmento compensaa dispersão negativa do primeiro segmento de tal maneira que adispersão cumulativa através dos primeiro e segundo segmentos éde aproximadamente zero. A dispersão aumentada do primeirosegmento coincide com características para baixar efeitos nãolineares, permite um comprimento mais longo do segundosegmento, e auxilia a baixar a atenuação na linha de transmissão."OPTICAL TRANSMISSION LINE HAVING OPERATIONAL WAVE LENGTH, OPTICAL HIGH SPEED DECOMMUNICATION SYSTEM, PROCESSES TO TRANSMIT A SIGNAL THROUGH A TRANSITIONAL LINE AND OPTICAL TRANSMISSION FIBER FROM ONE OPEN HOODED LODGE. An apparatus and method for transmitting an optical signal. The invention is directed to a transmission line having first (16) and second (18) unimode fiber segments. The fiber of the first segment has a negative dispersion with an absolute value of between about 2.5 ps / nm / km with an absolute value of about 2.5 ps / nm / km and 10 ps / nm / km at the operational wavelength. The positive dispersion of the second segment compensates for the negative dispersion of the first segment in such a way that the cumulative dispersion through the first and second segments is approximately zero. The increased dispersion of the first segment coincides with characteristics to lower nonlinear effects, allows a longer length of the second segment, and helps to lower the attenuation in the transmission line.

BR9916365-9A 1998-12-18 1999-12-15 Optical transmission line having an operational wavelength, high-speed optical communication system, process of transmitting a signal through a transmission line and optical transmission fiber in a mode housed within a fiber optic cable BR9916365A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP98124065 1998-12-18
PCT/EP1999/009962 WO2000038356A1 (en) 1998-12-18 1999-12-15 Optical system and method having low loss and non-linear effects

Publications (1)

Publication Number Publication Date
BR9916365A true BR9916365A (en) 2001-12-11

Family

ID=8233171

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9916365-9A BR9916365A (en) 1998-12-18 1999-12-15 Optical transmission line having an operational wavelength, high-speed optical communication system, process of transmitting a signal through a transmission line and optical transmission fiber in a mode housed within a fiber optic cable

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
AR031517A1 (en) 2003-09-24
CN1536378A (en) 2004-10-13
CN100501466C (en) 2009-06-17
AU1980000A (en) 2000-07-12
AU779898B2 (en) 2005-02-17

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Legal Events

Date Code Title Description
B25A Requested transfer of rights approved

Owner name: PIRELLI S.P.A. (IT)

Free format text: TRANSFERIDO POR INCORPORACAO DE: PIRELLI CAVI E SISTEMI S.P.A.

B25A Requested transfer of rights approved

Owner name: PIRELLI AND C. S.P.A. (IT)

Free format text: TRANSFERIDO POR INCORPORACAO DE: PIRELLI S.P.A.

B25A Requested transfer of rights approved

Owner name: PRYSMIAN CAVI E SISTEMI ENERGIA S.R.L. (IT)

Free format text: TRANSFERIDO DE: PIRELLI AND C. S.P.A.

B07A Technical examination (opinion): publication of technical examination (opinion)
B09B Decision: refusal

Free format text: INDEFIRO O PEDIDO DE ACORDO COM ART. 8O COMBINADO COM ART. 13 DA LPI

B09B Decision: refusal

Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL.

B15K Others concerning applications: alteration of classification

Ipc: G02B 6/036 (2006.01), G02B 6/02 (2006.0