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Connector losses Optical Fiber Cable

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Losses during fiber connector

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Connector losses Optical Fiber Cable

  1. 1. OPTICAL FIBER COMMUNICATION Where Beauty of Light and Semiconductor Devices mixed together to transformed the History of Communication Technology .
  2. 2. Unit 4 (OFC)-Part-2 Connection Losses Kalyan Acharjya kalyan.acharjya@gmail.com kalyan5.blogspot.in
  3. 3. 10/7/2016 3 Sorry, I opened the lock without prior permission taken from the original owner. Some images used in this presentation contents are copied from Book’s Fiber Optics & Optoelectronics By R.P. Khare and some websites without permission. Only Original Owner has full rights reserved for copied images. This PPT is only for fair academic use. Kalyan Acharjya
  4. 4. Connection Losses • Extrinsic Losses – Loss Due to Fresnel Reflections – Fiber to Fiber Misalignment Losses – Losses Due to other Factors • Intrinsic Losses (Not Compatible) – The Core Diameter – NA (The Relative index Difference) – The Refractive Index Profile
  5. 5. Loss General Expression L (Due to factors) =-10Log (Base 10) η Where η is Coupling Efficiency
  6. 6. Fresnel Reflections
  7. 7. Fiber to Fiber Misalignment Losses
  8. 8. Fiber to Fiber Misalignment Losses
  9. 9. Fiber to Fiber Misalignment Losses Eta (Long)=[1-DEL X NA/4an]
  10. 10. Fiber to Fiber Misalignment Losses
  11. 11. Extrinsic Losses Due to other Factors • Non Flatness of end Surfaces • Dust • Joint Losses
  12. 12. Intrinsic Losses
  13. 13. Intrinsic Losses
  14. 14. Intrinsic Losses • Core Diameter Mismatch • NA Mismatch
  15. 15. Intrinsic Losses • Mismatch Index Profile
  16. 16. Thank You kalyan5.blogspot.in
  17. 17. Solve It! • Two compatible multimode SI fiber are jointed with lateral offset of 10% of the core radius. The RI of the core of each fiber 1.5. Calculate the insertion loss at the joint when- – There is small air gap. – An index matching fluid is inserted between the fibers ends.

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