• Skip to primary navigation
  • Skip to secondary navigation
  • Skip to main content
  • Skip to footer

FiberFin

Transforming the World to Polymer Optical Fiber

  • Industries
    • Industrial Manufacturing
    • Automotive
    • Military and Biometrics
    • Medical
    • Lighting
  • About
    • About FiberFin
    • FiberFin Capabilities
    • FiberFin Facilities
    • FiberFin Automation
  • FiberCast
  • News & Blog
  • Contact
  • Store
  • Industries
    • Industrial Manufacturing
    • Automotive
    • Military and Biometrics
    • Medical
    • Lighting
  • About
    • About FiberFin
    • FiberFin Capabilities
    • FiberFin Facilities
    • FiberFin Automation
  • FiberCast
  • News & Blog
  • Contact
  • Store
  • Store Home
  • Fiber and Cable
  • Hand Tools
  • Fiber Search
  • Connectors
  • Active Components
  • Cable Assemblies
  • Service/Warranty
    • Policies
    • RMA Request Form
    • eForce Service Information
    • eForce Service Request Form
  •  
Contact FiberFin

POF Measurement: Cutback Method

POF Measurement: Cutback Method

The cutback method is a destructive method of measuring attenuation of long run lengths of optical fiber. It typically takes the following form:

Diagram showing both stages of the cutback test method.
  1. Set up a transmitter and receiver on both ends of the fiber optic cable to be tested, with a known transmitter power, P0.
  2. Measure the power received, P1 (Part 1 in diagram).
  3. Cut the fiber, leaving 1 to 2 meters at the transmitter end, and repeat test, measuring the power received, P2 (Part 2 in diagram).
  4. Use the following equation to calculate attenuation of the cable under test, in dB/km. L1 and L2 are the original and cut lengths of the fiber in meters, respectively.
Equation for calculating a fiber’s attenuation per unit length.

By cutting fiber on the receiver end, variables introduced by variations in signal launch conditions are mitigated. Note that power must be in linear units (watts), instead of dBm for this formula.

Cut Back Method POF Testing (PDF)

References

POF Data Book, Tokyo, Japan: MRC Techno Research Inc, 1993, pp.37

Filed Under: FiberCast Tagged With: Advanced POF Topics, Measurement

New High NA Medical Grade Fiber by Toray – RAYTELA® PQE

FiberFin is excited to announce the newest fiber to its catalog: RAYTELA® PQE by Toray, available exclusively from FiberFin! Buy Now Please contact us directly for pricing and availability. Email(Required) More InfoIf you’d like to provide more info ab …

Learn More

Footer

Contact FiberFin

FiberFin, Inc.
9925 State Route 47 Unit A
Yorkville, Illinois 60560
United States of America

+1 (630) 553-6924

Product support: info@fiberfin.com
Sales inquiries: sales@fiberfin.com

Visit the FiberFin Store

FiberFin offers a complete line of industrial-grade products, including POF cable, terminated cable assemblies, connectors, and accessories. To view our catalog or place an order, visit out our store. Visit the Store

Connect with FiberFin

  • Facebook
  • Pinterest
  • Twitter
  • YouTube
Privacy Statement
Terms & Conditions

Copyright © 2023 FiberFin · Website by Wicked Good Web