| 摘要 |
PROBLEM TO BE SOLVED: To shorten time of optical gate operation of an electroabsorption type light modulator. SOLUTION: A sampling waveform measuring device 101 includes: an optical pulse generator 11 which generates an optical pulse Ps; the electroabsorption type light modulator 12 which receives an optical signal Px to be measured and the optical pulse Ps as inputs and outputs an optical signal Py; and a light receiver 15 which converts the optical signal Py output from the electroabsorption type light modulator 12 into an electric signal Dy. The device 101 samples the optical signal Px to be measured, by utilizing the optical gate operation by the mutual absorption saturation of the electroabsorption type light modulator 12 on the occasion when the optical pulse Ps is input, and measures the waveform of the optical signal Px to be measured, by an equivalent sampling method. The device 101 includes a gate width adjusting means 16 which inputs to the light modulator 12 an electric pulse Vpm for gate width adjustment which increases a falling speed of the optical gate operation. COPYRIGHT: (C)2011,JPO&INPIT |
