GB/T 51154-2015 English PDFUS$1409.00 · In stock
Delivery: <= 8 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 51154-2015: Code for engineering design of optical fiber submarine cable systems Status: Valid
Basic dataStandard ID: GB/T 51154-2015 (GB/T51154-2015)Description (Translated English): Code for engineering design of optical fiber submarine cable systems Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: Q40 Classification of International Standard: 81.080 Word Count Estimation: 67,614 Date of Issue: 2015-12-03 Date of Implementation: 2016-08-01 Regulation (derived from): Ministry of Housing and Urban?Rural Development Announcement No.987 Issuing agency(ies): Ministry of Housing and Urban-Rural Development of the People's Republic of China; General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China GB/T 51154-2015: Code for engineering design of optical fiber submarine cable systems---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.1 General 1.0.1 In order to unify and standardize the construction of submarine optical cable projects, so that submarine optical cable projects comply with relevant national policies, advanced technology, safe and reliable, economical and reasonable, energy-saving and environmentally friendly, this specification is formulated. 1.0.2 This specification is applicable to the engineering design of submarine optical cable lines and digital signal transmission systems of submarine optical cables and related auxiliary systems. 1.0.3 Submarine optical cable engineering design should be compared with multiple schemes, and efforts should be made to improve economic benefits and reduce project costs. 1.0.4 Submarine optical cable projects should be planned, jointly constructed, and resource shared to meet the requirements of building a resource-saving and environment-friendly society. 1.0.5 The equipment of submarine optical cable projects constructed in areas with seismic fortification intensity 7 and above in my country shall meet the seismic performance requirements of communication networks. 1.0.6 In addition to complying with these regulations, the engineering design of submarine optical cables shall also comply with the relevant current national standards. 2 Terms and symbols2.1 Terminology 2.1.1 Submarine repeater Submarine optical signal amplification equipment composed of one or several regenerators or optical amplifiers and other related devices. 2.1.2 Repeated submarine cable system with relay submarine cable system Submarine optical cable system using submarine optical repeater in the submarine line. 2.1.3 Repeaterless submarine cable system Submarine optical cable transmission system without submarine optical repeater in the submarine line. 2.1.4 beach manhole The man well installed on the landing beach of the submarine optical cable is used to terminate the submarine optical cable and connect the land optical and cable. 2.1.5 submarine cable landing point cable landing point The location of the joint point between the submarine optical cable and the land optical cable is generally located on the beach manhole. 2.1.6 submarine cable landing station cable landing station Terminal station for submarine fiber optic cable systems. Submarine optical cable terminal equipment, monitoring equipment and remote power supply equipment can be installed in the submarine optical cable landing station. 2.1.7 sea wall A dyke on the coast to keep out the sea. 2.1.8 Submarine cable segment The collection of all submarine cable system components between two adjacent submarine cable terminal equipment connected on the same pair of optical fibers. 2.1.9 Anchorage area A special area at sea where designated ships can drop anchor. 2.1.10 deep sea section Submarine optical cables laid in sections with a water depth greater than 1000m. 2.1.11 shallow sea section Submarine optical cables laid in water depths ranging from 20m to 1000m. 2.1.12 inshore section The submarine optical cable laid in the section from the shore beach man's well to 20m. 2.1.13 landing section landing section The submarine optical cable laid in the section from the beach man's well to the water depth of 5m. 2.1.14 remote power supply system power feeding system A power supply system that provides power to submarine equipment using the loop formed by the conductor in the submarine optical cable and the earth. 2.1.15 remote optical pumped EDF amplifier A remote optical amplification system consisting of the pump source in the terminal equipment and the erbium-doped optical fiber embedded in the optical cable line at a certain distance (usually 80km to 120km) from the terminal equipment. 2.1.16 cable route desktop study According to the design of the topology structure of the submarine optical cable system, through the collection and analysis of existing geophysical data, marine environmental elements and marine development activities, one or more technically and economically feasible submarine optical cable routing schemes are proposed. 2.1.17 Ocean route survey route survey Using geological sampling, geophysical surveying, on-site observation and other professional technical methods, conduct on-the-spot investigations on the routing scheme proposed by the routing pre-selection tabletop research, and determine the best routing scheme after comprehensive evaluation and comparison of the obtained data, and provide for the optical cable project. Design and construction provide scientific and technological basis. 2.1.18 static penetration test cone penetration test The process of pressing the conical probe into the soil at a constant speed and measuring its penetration resistance (cone head resistance, side wall friction resistance), etc. 2.1.19 optical coherent reception optical coherent detection In the receiving device, the local optical carrier and the same-frequency optical carrier signal are used for coherent mixing, and the phase information of the carrier signal is detected and received. 2.2 Symbols English abbreviation English name Chinese name ASE Amplified Spontaneous Emission Amplified spontaneous emission BBER Background Block Error Ratio background error block ratio BER Bit Error Ratio bit error rate BJ Beach Joint Shore Beach Joint Box BOL Begin Of Life BU Branch Unit subsea branch unit C-OTDR Coherent Optical Time-Domain Reflectometer Coherent Optical Time Domain Reflectometer CTB Cable Terminating Box optical cable terminal box DA cable Double Armored cable double armored cable (D) BPSK (Differential) Binary Phase (differential) binary phase shift Shift Keying Keying DCC Data Communication Channel data communication channel DCN Data Communication Network Data Communication Network DGD Differential Group Delay Differential group delay DPSK Differential Phase Shift Keying Differential Phase Shift Keying (D)QPSK (Differential) Quadrature (differential) quadrature phase shift Phase Shift Keying Keying DSP Digital Signal Processing Digital Signal Processing EOL End Of Life FEC Forward Error Correction forward error correction LME Line Monitoring Equipment Line Monitoring Equipment LW cable Light Weight cable light weight cable LWP cable Light Weight Protected cable OADM Optical Add／Drop Multi-plexer ODF Optical Distribution Frame Optical Distribution Frame OSNR Optical Signal to Noise Ratio Optical Signal to Noise Ratio OTDR Optical Time-Domain Reflectometers OTN Optical Transport Network Optical Transport Network OTUk Completely standardized fully standardized optical path Optical Channel Transport Unit-k PFE Power Feeding Equipment Remote power supply equipment PM-(D)BPSK Polarization Multiplexing- polarization multiplexing (differential) two (Differential) Binary Phase Shift Keying) Phase Shift Keying PM0-(D)QPSK Polarization Multiplexing- Polarization multiplexing (differential) positive (Differential) Quadrature Phase Shift Keying PMD Polarization Mode Dispersion Polarization Mode Dispersion QQ factor Q value RA cable Rock Armored cable Rock armored cable RZ Return to Zero return to zero code SA cable Single Armored cable single armored cable SDH Synchronous Digital Hierarchy synchronous digital system SE Sea Earth Marine Grounding Device SESR Severely Errored Second Ratio Severely Errored Second Ratio SLTE Submarine Line Terminal Submarine Optical Cable Line Terminal Equipment equipment VOIP Voice over IP IP phone WDM Wavelength Division Multiplexing3 Submarine optical cable system composition and system standard3.1 System composition and classification 3.1.1 The submarine optical cable system can be divided into a relay submarine optical cable system and a non-relay submarine optical cable system according to whether there is a submarine optical repeater. 3.1.2 Submarine optical cable system with relay should consist of submarine optical cable terminal equipment, remote power supply equipment, line monitoring equipment, network management equipment, submarine optical repeater, submarine branch unit, online power equalizer, submarine optical cable, submarine optical cable connector It is composed of equipment such as boxes, ocean grounding devices, and terrestrial optical cables. 3.1.3 The non-repeater submarine optical cable system should be composed of submarine optical cable terminal equipment, network management equipment, submarine branch unit, submarine optical cable, submarine optical cable splice box and terrestrial optical cable and other equipment. 3.1.4 The submarine optical cable system can be divided into SDH system and WDM system according to the type of terminal equipment. 3.2 System interface and working wavelength 3.2.1 The service interface types supported by the submarine optical cable digital signal transmission system shall comply with the provisions in Table 3.2.1. Table 3.2.1 Types of service interfaces supported by submarine optical cable digital signal transmission system 3.2.2 The line optical path signal type and rate of the submarine optical cable digital signal transmission system should comply with the requirements in Table 3.2.2. Table 3.2.2 Line optical path types of submarine optical cable digital signal transmission system 3.2.3 The submarine optical cable digital signal transmission system should work in the 1550nm band.4 Design of Submarine Optical Cable Digital Signal Transmission System4.1 Basic principles of system design 4.1.1 The design life of the system should reach 25 years. 4.1.2 The system design should comprehensively consider the design capacity and cost factors to realize the optimal design of the system; if the technical conditions permit, the non-relay system should be preferred. 4.2 Determination of scale capacity 4.2.1 The line transmission rate of the non-repeater submarine optical cable system should be determined according to the distance between landing stations, and the number of cores of optical fibers should be determined through technical and economic comparison in combination with medium and long-term capacity requirements. 4.2.2 The number of optical fiber cores of the relay submarine optical cable system should be determined in consideration of cost, medium and long-term capacity requirements, and remote power supply capacity. 4.2.3 The repeater system should adopt the industry's advanced terminal technology, and determine the design capacity in combination with the type of optical fiber and the distance between submarine optical repeaters, so as to minimize the cost of system unit design capacity; the configuration capacity of submarine optical cable terminal equipment can be Determined according to recent business volume needs. 4.3 Network topology 4.3.1 The submarine optical cable system should adopt two types of basic topological structures. point-to-point linear (Fig. 4.3.1-1) and branch (Fig. 4.3.1-2). Figure 4.3.1-1 Point-to-point line topology Figure 4.3.1-2 Branch topology 4.3.2 When choosing a topology structure, factors such as the geographical relationship between landing stations, business requirements, network security requirements, and economics should be considered comprehensively. 4.4 Selection of subsea equipment 4.4.1 Subsea equipment may include equipment such as submarine optical repeaters, subsea branch units and online power equalizers. 4.4.2 In addition to meeting the external dimension requirements of the existing submarine optical cable construction ship deployment equipment, the deepest seawater pressure requirements and the requirements of high dielectric strength, the submarine equipment should also meet the following requirements. 1 The optical repeater should have the function of remote power supply surge protection; 2 The important components of optical repeater and branch unit should have redundant configuration to meet the overall reliability index of the system; 3 The optical repeater should have its own status monitoring circuit or C-OTDR optical fiber monitoring circuit; 4 The submarine branch unit should be able to choose to have the function of fiber branching or add-drop multiplexing (OADM) according to the structure of the submarine optical cable system; 5 The subsea branch unit should be able to choose to have the remote power supply circuit switching function according to the structure of the submarine optical cable remote power supply system; 6 The subsea branch unit with remote power supply switching function shall have remote power supply surge protection function; 7 Online power equalizer According to different spectral power waveforms, the gain equalization filter of the corresponding waveform can be selected. 4.5 Selection of terminal equipment 4.5.1 The selection of submarine optical cable terminal equipment should meet the following basic requirements. 1 The terminal equipment should comply with the principles of advanced technology, safety and reliability, economical and practical, and easy maintenance; 2 Equipment suppliers should have the ability to upgrade equipment, upgrade network management system, technology research and development and after-sales service; 3.The terminal equipment should have flexible hardware configuration with fewer varieties, which is easy to expand and upgrade the system; 4 The terminal equipment should meet the technical requirements related to SDH or WDM systems in my country; 5.Terminal equipment should comply with the principles and requirements of energy conservation and emission reduction. 4.5.2 Rack-mounted equipment The height of the rack should be 2600mm, 2200mm or.2000mm, the thickness should be 300mm or 600mm, and the width should be 600mm. It is advisable to maintain the uniform height of the racks in the same computer room. 4.5.3 The overall mechanical structure of the terminal equipment should be easy to install, maintain, expand or adjust, and the hardware of the equipment should be modular in design, and should have mechanical strength and rigidity. The electromagnetic compatibility of the equipment should comply with the relevant provisions of the current national standard "Electromagnetic Compatibility Requirements and Measurement Methods for Telecommunications Network Equipment" GB 19286. 4.5.4 On the terminal equipment, an interface for testing the main optical channel and a data communication channel interface for uninterrupted service testing shall be provided. 4.5.5 On the terminal equipment with relay submarine optical cable system, a submarine optical cable line monitoring interface shall be provided. 4.5.6 On the terminal equipment of the non-repeater WDM submarine optical cable system, the optical power and optical signal-to-noise ratio data of each optical channel shall be able to be obtained, and the corresponding data shall be viewed in the network management system. 4.5.7 On the terminal equipment of the repeater WDM submarine optical cable system, the optical power and FEC error correction data of each optical channel shall be able to be obtained, and the corresponding data shall be viewed in the network management system. 4.5.8 The dispersion tolerance and polarization dispersion tolerance of coherent receiving WDM submarine optical cable terminal equipment should be greater than the cumulative dispersion and differential group delay of optical cable lines respectively. 4.5.9 The configured optical amplifier and Raman amplifier should have obvious safety signs. When the optical fiber is cut, the equipment fails or the optical connector is pulled out, the automatic power reduction process should be started, and the automatic/manual restart process should be available. 4.6 Selection of optical fiber 4.6.1 The selection of the optical fiber of the submarine optical cable should comprehensively consider factors such as the technical condition of the terminal equipment, the length and cost of the submarine optical cable system. 4.6.2 Submarine optical cables can choose to use the following types of optical fibers. 1 Non-dispersion-shifted single-mode fiber; 2 cut-off wavelength shifted single-mode fiber; 3 non-zero dispersion-shifted single-mode fiber; 4 Dispersion managed fiber. 4.7 Selection of auxiliary technologies related to submarine optical cable transmission 4.7.1 The dispersion compensation design of WDM submarine optical cable digital signal transmission system shall meet the following requirements. 1 The non-coherent reception non-repeater WDM submarine optical cable digital signal transmission system can pre-compensate the dispersion at the sending end of the submarine optical cable terminal equipment and compensate the dispersion after the receiving end; the dispersion compensation can adopt fixed dispersion compensation or (and) adaptive dispersion compensation, and can Accurate dispersion compensation of a single channel is realized by using adaptive dispersion compensation combined with fixed dispersion compensation. 2 Non-coherent reception and repeater WDM submarine optical cable digital signal transmission system can realize dispersion compensation by combining the online compensation of uniformly interleaved dispersion compensation optical amplifier section in the submarine optical cable line and the terminal equipment compensation mechanism mentioned in paragraph 1 of this article. 4.7.2 The design of WDM submarine optical cable digital signal transmission system using non-coherent reception should consider the influence factors of polarization mode dispersion (PMD), and the cost of differential group delay (DGD) should be within the allowable range of system performance budget. 4.7.3 The application of power equalization technology shall comply with the following regulations. 1 For the non-repeater WDM submarine optical cable digital signal transmission system, the submarine optical cable terminal equipment should have the optical power equalization function, which can automatically adjust the power of a single channel without manual participation; 2 For the WDM submarine optical cable digital signal transmission system with repeaters, the system power equalization can be realized by combining the online power equalization of the submarine optical cable line insertion power equalizer with the optical power equalization of the submarine optical cable terminal equipment. 4.7.4 Considering the cost of submarine equipment, the submarine optical cable digital signal transmission system should adopt the most advanced FEC, coding modulation and receiving technology. 4.7.5 According to the distance between landing stations and the design capacity, technologies such as pre-amplifier, post-amplifier, pre-remote pump, post-remote pump and Raman amplifier may be used in the non-repeater submarine optical cable digital signal transmission system. 4.8 System Reliability 4.8.1 Submarine equipment components are to be arranged redundantly. 4.8.2 During the service life of the system, the number of failures requiring maintenance ships to repair due to failures of optical cables and components themselves should not exceed 3 times. 4.9 System Maintenance Margin 4.9.1 The maintenance margin design of the submarine optical cable system during the service life should meet the following requirements. 1 The land optical cable section between the landing point and the landing station can be calculated as one maintenance per 4km, but not less than two times, and the loss of each joint for each maintenance can be cal......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 51154-2015_English be delivered?Answer: Upon your order, we will start to translate GB/T 51154-2015_English as soon as possible, and keep you informed of the progress. 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