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Optical fibre testing mahendra singh

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Transcript

  • 1. Prepared By-Mahendra Singh Nov. 22, 2013
  • 2. 1. The need for testing 2. OFC Cable Types used in Telecom. 3. Connectors Types Used in OFC. 4. Types of Testing. 5. Equipments used for Testing. 6. Problems with today’s equipment. 7. Cost of equipment
  • 3. 1. To Ensure the fiber is Properly working. 2. To Check IL and reflectance of all splices and connections. 3. To calculate the cable losses. 4. To find out the fault location for repair.
  • 4. 1. Single mode fiber patch cables Use 9/125 micron SM cable & connectors 2. Multimode fiber patch cables Use 62.5/125 micron or 50/125 micron bulk MM cable & Connectors 3. 10gig multimode fiber optic patch cables specially designed 50/125 micron fiber optimize for 850nm VCSEL laser based 10Gig Ethernet.
  • 5. 1. Simplex fiber optic patch cables 2.Duplex fiber optic patch cables 3.Ribbon fan-out cable assembly
  • 6. 1. LC Connector 2. ST Connector 3. SC and SC/APC connector
  • 7. 4. FC and FC/APC 5. FDDI Connector 6. ESCON Connector 7. MU connector 8. E2000 connector
  • 8. 9. MTRJ connector 10. VF-45 connector 11. Opti-Jack connector 12. MTP – MPO Connector 13. SMA 905 and 906 Connector
  • 9. 14. Biconic Connector 15. D4 Connector
  • 10. 1. End to End loss testing 2. Cable Commissioning 3. Splice and connector optimization 4. System ORL characterization 5. Dispersion verification and wavelength measurements
  • 11. a. b. c. Both units must be referenced with the test jumpers Confirm power source is connected to test fiber Reading is only accurate if both units at same wavelength
  • 12. a. b. c. Tests the cable for damage Double checks length and attenuation And measures the polarization mode dispersion
  • 13. a. b. c. d. Do to glass air interface Rayleigh backscattering Pr = Reflected Power Pi = Incident Power
  • 14. 1. Jumper cable 2. Light source. 3. Power Meter. 4. Reflectometer.
  • 15. There are two types of Reflectometer1. Optical Time Domain Reflectometer - Measures reflectance and ORL - Can characterize connectors and mechanical splices - Accuracy of plus/minus 2dB
  • 16. 2. Optical Continuous Wave Reflectometer - Also measures reflectance and ORL - Some units measure bi-directional loss - Accuracy of plus/minus 0.4 dB to 1.0 dB
  • 17. 2. Optical Continuous Wave Reflectometer - Also measures reflectance and ORL - Some units measure bi-directional loss - Accuracy of plus/minus 0.4 dB to 1.0 dB
  • 18. 1.Light source and power meter must be referenced at the same point. 2.Wavelength of light source and power meter must be the same. 3.Jumpers to test equipment can wear down.
  • 19. 1. 2. 3. 4. 5. 6. 7. Agilent/HP Tektronix Advantest Fluke Networks Fluke NetTest Cal Instruments
  • 20. Dynamic range: 45 dB Fiber break locator Multi-fiber testing for fast high-count cable qualification Agilent E6000C Perform power and loss measurement with the built-in light source and the power meter Mini-OTDR module. Price range: $10,000 - $16,000
  • 21. Price range: $375.00 to $1000 1000 to 4000+ for Laser source
  • 22. Power measurements at 850, 1300, 1310,1550, and 1625 nm Full fiber documentation via Windows TM 95/98/NT 4.0 data analysis software Singlemode or multimode dual-wavelength testing Noyes OPM 6 & OLS 6 Optical Power Meter & Light Sources Price range: $500 - $1600
  • 23. Mahendra Singh