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Optical Engineering

Sensitivity evaluation of fiber optic OC-48 p-i-n transimpedance amplifier receivers using sweep-frequency modulation and intermixing diagnostics
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Paper Abstract

The sensitivity of SONET p-i-n photodiode receivers with transimpedance amplifiers (PIN-TIA) from OC-3 to OC-48 data rates, measured by using a standard bit-error-rate tester (BERT) and a novel sweep-frequency-modulation/intermixing (SMIM) technique, are compared. A threshold intermixed voltage below 15.8 mV obtained by the SMIM method corresponding to the sensitivity of the PIN-TIA receiver beyond –32 dBm determined by BERT for the SONET OC-48 PIN-TIA receivers with a required BER of better than 10–10 is reported. The analysis interprets that the intermixed voltage for improving the PIN-TIA receiver sensitivity from –31 to –33 dBm has to be increased from 12.5 to 20.4 mV. As compared to the BERT, the SMIM is a relatively simplified, fast, and low-cost technique for on-line mass-production diagnostics for measuring the sensitivity and evaluating the BER performances of PIN-TIA receivers.

Paper Details

Date Published: 1 April 2005
PDF: 5 pages
Opt. Eng. 44(4) 044002 doi: 10.1117/1.1883385
Published in: Optical Engineering Volume 44, Issue 4
Show Author Affiliations
Gong-Ru Lin, National Chiao Tung Univ. (Taiwan)
Yu-Sheng Liao, National Chiao Tung Univ. (Taiwan)

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