JPH01115230A - Optical fiber communication lan - Google Patents

Optical fiber communication lan

Info

Publication number
JPH01115230A
JPH01115230A JP62273701A JP27370187A JPH01115230A JP H01115230 A JPH01115230 A JP H01115230A JP 62273701 A JP62273701 A JP 62273701A JP 27370187 A JP27370187 A JP 27370187A JP H01115230 A JPH01115230 A JP H01115230A
Authority
JP
Japan
Prior art keywords
λ
optical signal
node
optical fiber
cascade
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62273701A
Inventor
Yasuhito Okawa
Original Assignee
Matsushita Electric Ind Co Ltd
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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Priority to JP62273701A priority Critical patent/JPH01115230A/en
Publication of JPH01115230A publication Critical patent/JPH01115230A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To simplify system of the title LAN and to lower its costs by cascade- connecting ≥3 nodes including a starting point and a termination by means of a single optical fiber, and using an optical signal with different wavelengths in the rising direction and falling direction of a circuit.
CONSTITUTION: A node 1 of the starting point, intermediate nodes 2, 3..., and termination node N are cascade-connected by a single optical fiber, and thus, a loop is formed. The optical signal of a wavelength λ1 is used for the falling direction and the optical signal of a wavelength λ2 is used for the rising direction. At the input/output terminal of each node, a demultiplexer/multiplexer WDM of light is provided. The optical signal is demultiplexed into the wavelengths λ1 and λ2 at an input terminal, a processing such as a demodulation, a modulation, and an amplification is performed, the optical signals λ1 and λ2 are multiplexed at an output terminal, and are sent to the next node. When a line is troubled, for example, at an (a) point, they are looped back at the adjoining nodes 2 and 3. Thus, the line constitution is simplified, and the costs are lowered.
COPYRIGHT: (C)1989,JPO&Japio
JP62273701A 1987-10-29 1987-10-29 Optical fiber communication lan Pending JPH01115230A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62273701A JPH01115230A (en) 1987-10-29 1987-10-29 Optical fiber communication lan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62273701A JPH01115230A (en) 1987-10-29 1987-10-29 Optical fiber communication lan

Publications (1)

Publication Number Publication Date
JPH01115230A true JPH01115230A (en) 1989-05-08

Family

ID=17531350

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62273701A Pending JPH01115230A (en) 1987-10-29 1987-10-29 Optical fiber communication lan

Country Status (1)

Country Link
JP (1) JPH01115230A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467080A1 (en) * 1990-06-19 1992-01-22 Sumitomo Electric Industries, Ltd. Light communication system
US5214728A (en) * 1990-06-19 1993-05-25 Sumitomo Electric Industries, Ltd. Light communication system
EP0617527A1 (en) * 1993-03-23 1994-09-28 Northern Telecom Limited Transmission systems incorporating optical amplifiers
US6587241B1 (en) 1999-08-20 2003-07-01 Corvis Corporation Optical protection methods, systems, and apparatuses
US6920277B2 (en) 2002-06-04 2005-07-19 Marvin R. Young Optical bypass method and architecture
US7164692B2 (en) 2002-04-08 2007-01-16 Jeffrey Lloyd Cox Apparatus and method for transmitting 10 Gigabit Ethernet LAN signals over a transport system
US7206516B2 (en) 2002-04-30 2007-04-17 Pivotal Decisions Llc Apparatus and method for measuring the dispersion of a fiber span
US7340133B2 (en) 2002-06-04 2008-03-04 Pivotal Decisions Llc Configurable dispersion compensation trimmer
US7433572B2 (en) 2002-06-04 2008-10-07 Pivotal Decisions Llc Optical bypass method and architecture
US7440164B2 (en) 2002-06-04 2008-10-21 Pivotal Decisions Llc Apparatus and method for Raman gain spectral control
US7443576B2 (en) 2002-04-30 2008-10-28 Pivotal Decisions Llc Compensation for spectral power tilt from scattering
US7502562B2 (en) 2002-03-29 2009-03-10 Pivotal Decisions Llc Distributed terminal optical transmission system
US7586671B2 (en) 2002-06-04 2009-09-08 Eiselt Michael H Apparatus and method for Raman gain control
US7593637B2 (en) 2002-04-30 2009-09-22 Angela Chiu Optical transport system architecture for remote terminal connectivity
US7603042B2 (en) 2002-06-04 2009-10-13 Eiselt Michael H Apparatus and method for optimum decision threshold setting
US7697842B2 (en) 2002-04-22 2010-04-13 Marvin Ray Young Automated optical transport system
US7697802B2 (en) 2002-06-04 2010-04-13 Young Marvin R Optical bypass method and architecture
US7711271B2 (en) 2002-04-30 2010-05-04 Eiselt Michael H Wave division multiplexed optical transport system utilizing optical circulators to isolate an optical service channel
US7729617B2 (en) 2002-06-04 2010-06-01 Samir Satish Sheth Flexible, dense line card architecture
US8175464B2 (en) 2002-04-16 2012-05-08 Pivotal Decisions Llc Chromatic dispersion compensation system and method
US8494372B2 (en) 2002-04-30 2013-07-23 Pivotal Decisions Llc Apparatus and method for optimizing optical and electrical filtering of optical signals

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5890840A (en) * 1981-11-25 1983-05-30 Mitsubishi Electric Corp Optical fiber multiple access communication system
JPS62112429A (en) * 1985-11-12 1987-05-23 Matsushita Electric Ind Co Ltd Duplicated optical loop network
JPS62141590A (en) * 1985-12-16 1987-06-25 Nippon Musical Instruments Mfg Network system for electronic musical apparatus
JPS62225035A (en) * 1986-03-26 1987-10-03 Sharp Corp Bus type optical wavelength multiplex communication equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5890840A (en) * 1981-11-25 1983-05-30 Mitsubishi Electric Corp Optical fiber multiple access communication system
JPS62112429A (en) * 1985-11-12 1987-05-23 Matsushita Electric Ind Co Ltd Duplicated optical loop network
JPS62141590A (en) * 1985-12-16 1987-06-25 Nippon Musical Instruments Mfg Network system for electronic musical apparatus
JPS62225035A (en) * 1986-03-26 1987-10-03 Sharp Corp Bus type optical wavelength multiplex communication equipment

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467080A1 (en) * 1990-06-19 1992-01-22 Sumitomo Electric Industries, Ltd. Light communication system
US5214728A (en) * 1990-06-19 1993-05-25 Sumitomo Electric Industries, Ltd. Light communication system
EP0617527A1 (en) * 1993-03-23 1994-09-28 Northern Telecom Limited Transmission systems incorporating optical amplifiers
US6587241B1 (en) 1999-08-20 2003-07-01 Corvis Corporation Optical protection methods, systems, and apparatuses
USRE43403E1 (en) 2002-03-29 2012-05-22 Pivotal Decisions Llc Distributed terminal optical transmission system
US7505687B2 (en) 2002-03-29 2009-03-17 Pivotal Decisions Llc Distributed terminal optical transmission system
US7502562B2 (en) 2002-03-29 2009-03-10 Pivotal Decisions Llc Distributed terminal optical transmission system
US9031092B2 (en) 2002-04-08 2015-05-12 Pivotal Decisions Llc Apparatus and method for transmitting LAN signals over a transport system
US8223795B2 (en) 2002-04-08 2012-07-17 Pivotal Decisions Llc Apparatus and method for transmitting LAN signals over a transport system
US7164692B2 (en) 2002-04-08 2007-01-16 Jeffrey Lloyd Cox Apparatus and method for transmitting 10 Gigabit Ethernet LAN signals over a transport system
US8175464B2 (en) 2002-04-16 2012-05-08 Pivotal Decisions Llc Chromatic dispersion compensation system and method
US7725042B2 (en) 2002-04-22 2010-05-25 Marvin Ray Young Automated optical transport system
US7697842B2 (en) 2002-04-22 2010-04-13 Marvin Ray Young Automated optical transport system
US7460297B2 (en) 2002-04-30 2008-12-02 Pivotal Decisions Llc Compensation for spectral power tilt from scattering
US7460296B2 (en) 2002-04-30 2008-12-02 Pivotal Decisions Llc Compensation for spectral power tilt from scattering
US7489880B2 (en) 2002-04-30 2009-02-10 Pivotal Decisions, Llc Apparatus and method for measuring the dispersion of a fiber span
US7206516B2 (en) 2002-04-30 2007-04-17 Pivotal Decisions Llc Apparatus and method for measuring the dispersion of a fiber span
US8195048B2 (en) 2002-04-30 2012-06-05 Pivotal Decisions Llc Optical transport system architecture for remote terminal connectivity
US7443576B2 (en) 2002-04-30 2008-10-28 Pivotal Decisions Llc Compensation for spectral power tilt from scattering
US7593637B2 (en) 2002-04-30 2009-09-22 Angela Chiu Optical transport system architecture for remote terminal connectivity
US8494372B2 (en) 2002-04-30 2013-07-23 Pivotal Decisions Llc Apparatus and method for optimizing optical and electrical filtering of optical signals
US7711271B2 (en) 2002-04-30 2010-05-04 Eiselt Michael H Wave division multiplexed optical transport system utilizing optical circulators to isolate an optical service channel
US7603042B2 (en) 2002-06-04 2009-10-13 Eiselt Michael H Apparatus and method for optimum decision threshold setting
US7697802B2 (en) 2002-06-04 2010-04-13 Young Marvin R Optical bypass method and architecture
US7586671B2 (en) 2002-06-04 2009-09-08 Eiselt Michael H Apparatus and method for Raman gain control
US7729617B2 (en) 2002-06-04 2010-06-01 Samir Satish Sheth Flexible, dense line card architecture
US7924496B2 (en) 2002-06-04 2011-04-12 Pivotal Decisions Llc Apparatus and method for Raman gain control
US7471858B2 (en) 2002-06-04 2008-12-30 Pivotal Decisions Llc Configurable dispersion compensation trimmer
US6920277B2 (en) 2002-06-04 2005-07-19 Marvin R. Young Optical bypass method and architecture
US7460745B2 (en) 2002-06-04 2008-12-02 Pivotal Decisions Llc Configurable dispersion compensation trimmer
US7440164B2 (en) 2002-06-04 2008-10-21 Pivotal Decisions Llc Apparatus and method for Raman gain spectral control
US7433572B2 (en) 2002-06-04 2008-10-07 Pivotal Decisions Llc Optical bypass method and architecture
US7340133B2 (en) 2002-06-04 2008-03-04 Pivotal Decisions Llc Configurable dispersion compensation trimmer

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