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|Author(s):||Tasshi Dennis; Paul D. Hale;|
|Title:||High-Accuracy Photoreceiver Frequency Response Measurements at 1.55 um by Use of a Heterodyne Phase-Locked Loop|
|Published:||September 29, 2011|
|Abstract:||We demonstrate a high-accuracy heterodyne measurement system for characterizing the magnitude of the frequency response of high-speed 1.55 µm photoreceivers from 2 MHz to greater than 50 GHz. At measurement frequencies below 2 GHz, we employ a phase-locked loop with a double-heterodyne detection scheme, which enables precise tuning of the heterodyne beat frequency with an RF synthesizer. At frequencies above 2 GHz the system is operated in free-run mode with thermal laser tuning of the beat frequency. We estimate the measurement uncertainties for the low frequency range and compare the measured high-frequency response of a photoreceiver to a measurement using electro-optic sampling.|
|Pages:||pp. 20103 - 20114|
|Keywords:||Calibration, Frequency Response, Heterodyne, Metrology, Optical Communications, Phase Locked Loop, Photoreceiver|
|Research Areas:||Electronics & Telecommunications, Telecommunications, Optoelectronics|