Commercialization statum distributed fibra opticus sentientes technology

Secundum directionem dispersi luce propagationem, Currently communi distribui alimentorum fibra opticum sentiendum technologiae dividitur in duo genera: backscattering distribuitur alimentorum fibra opticum sensu technology et intercessione distribuitur alimentorum sentientes technology distribuitur.

Backscattering distribuit optical fibra sensu technology

Et backscattered lux in optical fibra maxime includit tria genera: Rayleigh spargere, Brillouin dispersio et Raman spargens. Secundum diversum signum measurement modi, dofs technology est divisa in duas genera: optical frequency domain technology et optical tempore domain technology. Frequency domain technology fere habet altus localis resolutio, sed mensurae processus est turpis et sensu distantia limitatur; Dum optica tempus domain technology est simplex ad effectum deducendi et habet characteres diu procul et alta praecisione. Dofs secundum RBS maxime includit: optical tempus domain refluvie (otdr), cohaerens optical tempus domain reflixit (c-otdometer (φ-otdr) et frequency domain (φ-otdr) et frequency domain (φ-otdr) et frequency domain (φ-otdr), fundatur in Rayleigh Domain (OfDr) fundatur in Rayleigh Domain (OfDr) secundum Rayleigh Domain Raman optical tempus domain reflectometer (rotdr) fundatur raman dispersio; Brenouin optical tempus domain reflectometer (BOTDR) fundatur in Brillouin spargens et Brillouin optical tempus domain analyser (botda) fundatur in excitantur Brillouin spargens.

Optical tempus domain reflectometer (otdr) in MCMLXXVI, lumen pulsum tempore-of-fuga modum introducta in optical fibra, quod potest esse in predecessor de Otdr technology, quod potest esse in predecessor de Otdr technology, In MCMLXXVII, conceptum de Otdr formaliter propositus. Semel otdr technology erat launched, quod cito factus est vexillum modo diagnosing et locating optical fibra link vitiis. Hodie, otdr technology est valde mature. The main research institutions include University of Electronic Science and Technology of China, Tianjin University, Taiyuan University of Technology, Chinese Academy of Sciences, Nanjing University, etc. The main production companies include Canada's EXFO, Japan's ANRITSU, the United States' VIAVI and China's Jilong Company, the 34th Institute of China Electronics Technology Group Corporation, etc.

Compared with OTDR, which uses a wide-spectrum light source and direct detection, C-OTDR uses a narrow-linewidth laser with high coherence and a heterodyne coherent detection optical path structure, which can effectively improve the system's noise resistance. Principium est ostensum est in Figura I. In MCMLXXXII, in otdr ratio coepit ad cohaeret deprehensionem technology et effectum a deprehendatur distinctae distinctae distinctae XXX km, sed in MCMLXXXIV, cum in 090-Difflectrice ad Systemanic Systemanic Systemanic systems.