Title :
Accurate measurement of high extinction ratios of ultrafast pulsed sources
Author :
Camatel, Stefano ; Wang, Wei ; Rau, Lavanya ; Blumenthal, Daniel J.
Abstract :
We present a technique to accurately measure the extinction ratio (ER) of pulses shorter than 10 ps and show that this technique is accurate for ER values from 20 to 50 dB. The technique is based on second-harmonic generation frequency-resolved optical gating. The ER of 1.8-ps pulses was measured and compared with a calculated value. The error between experimentally obtained value and the expected value is within 0.5 dB.
Keywords :
high-speed optical techniques; laser variables measurement; optical harmonic generation; 1.8 ps; extinction ratios; frequency-resolved optical gating; measurement accuracy; pulsed sources; second-harmonic generation; ultrafast sources; Erbium; Extinction coefficients; Optical harmonic generation; Optical interferometry; Optical noise; Optical pulse generation; Optical pulse shaping; Optical pulses; Pulse measurements; Ultrafast optics; Extinction ratio (ER); frequency-resolved optical gating (FROG); optical pulses; second-harmonic generation (SHG);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.853528
