A swept frequency technique for measuring the frequency response of an optical intensity modulator and its application to modulation level control are outlined. The technique is precise and suited for wideband measurements. Experiments have been performed up to 2-GHz frequency. The measured response confirms the theoretical prediction. In the experiment on level control, a modulation depth flatness of ±0.3 dB was obtained for 0.1–2-GHz rf sweeping.
© 1978 Optical Society of America
Original Manuscript: March 7, 1977
Published: January 1, 1978
Shingo Uehara, "Calibration of optical modulator frequency response with application to signal level control," Appl. Opt. 17, 68-71 (1978)