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AFL secures patent for OTDR technology

AFL has been awarded a patent covering Optical Time Domain Reflectometers (OTDRs) where multiple wavelength-specific test signal generators and detector channels are combined on a single OTDR test port.


July 18, 2013  


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AFL has been awarded a patent covering Optical Time Domain Reflectometers (OTDRs) where multiple wavelength-specific test signal generators and detector channels are combined on a single OTDR test port.

According to the company, the approach enables users to determine if a fiber is live or dark, to measure the power level of any signals present on the fiber and to apply test signals (including non-interfering signals) on dark and live fibers, all without the need for swapping test ports or test equipment.

“Existing OTDRs typically have a number of test ports. One port, for example, may be the source of dark (out-of-service) test signals while another may be the source of live (in-service) test signals,” AFL said in a release.

“Because all test signals are not present on one port, users are required to swap the fiber under test from one port to the other to complete testing. In addition, OTDRs may include PON power meter ports for measuring the signals present on a fiber.”

Additional information is available at www.AFLglobal.com.