Title :
All-optical high-frequency characterization of optical devices for optomicrowave applications
Author :
Roux, Jean-FranCois ; Coutaz, Jean-Louis ; Tedjini, Smail
Author_Institution :
Lab. d´´Hyperfrequences et de Caracterisation, Savoie Univ., Chambery, France
Abstract :
Presents an original method to investigate the frequency response of optomicrowave devices in the GHz-THz range. In order to reach such a high bandwidth, we take advantage of the wide spectrum associated with femtosecond laser pulses. Using nonlinear crosscorrelation optical technique under appropriate conditions, the transfer function of a device is derived from its measured impulse response. We experimentally demonstrate our method by testing an integrated Mach-Zehnder interferometer, which acts as a notch filter for modulation frequencies that are odd multiples of 15 GHz.
Keywords :
Fourier transform optics; Mach-Zehnder interferometers; fast Fourier transforms; frequency response; high-speed optical techniques; integrated optics; microwave photonics; notch filters; optical correlation; optical filters; optical modulation; optical testing; optical transfer function; transient response; 15 GHz; GHz-THz range; all-optical high-frequency characterization; bandwidth; femtosecond laser pulses; frequency response; high-frequency characterization; impulse response; integrated Mach-Zehnder interferometer; modulation frequencies; nonlinear crosscorrelation optical technique; notch filter; odd multiples; optical devices; optomicrowave applications; optomicrowave devices; transfer function; wide spectrum; Bandwidth; Frequency response; Nonlinear optical devices; Nonlinear optics; Optical devices; Optical filters; Optical interferometry; Optical modulation; Optical pulses; Ultrafast optics;
Journal_Title :
Photonics Technology Letters, IEEE
