Connector losses Optical Fiber Cable

Losses during fiber connector

1. OPTICAL FIBER COMMUNICATION
Where Beauty of Light and Semiconductor Devices mixed
together to transformed the History of Communication
Technology .

2. Unit 4 (OFC)-Part-2
Connection Losses
Kalyan Acharjya
[email protected]
kalyan5.blogspot.in

3. 10/7/2016 3
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KalyanAcharjya

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. Loss General Expression
L (Due to factors) =-10Log(Base 10) η
Where ηis Coupling Efficiency

6. Fresnel Reflections

7. Fiber to Fiber Misalignment Losses

8. Fiber to Fiber Misalignment Losses

9. Fiber to Fiber Misalignment Losses
Eta (Long)=[1-DEL X NA/4an]

10. Fiber to Fiber Misalignment Losses

11. Extrinsic Losses Due to other Factors
•Non Flatness of end Surfaces
•Dust
•Joint Losses

12. Intrinsic Losses

13. Intrinsic Losses

14. Intrinsic Losses
•Core Diameter Mismatch
•NA Mismatch

15. Intrinsic Losses
•Mismatch Index Profile

17. Thank You
kalyan5.blogspot.in

18. Solve It!
•TwocompatiblemultimodeSIfiberarejointed
withlateraloffsetof10%ofthecoreradius.
TheRIofthecoreofeachfiber1.5.Calculate
theinsertionlossatthejointwhen-
–Thereissmallairgap.
–Anindexmatchingfluidisinsertedbetweenthe
fibersends.