Title :
Calibration of optical modulators by optical down-conversion
Author :
Watson, C.D. ; Humphreys, D.A. ; Wilson, M.G.F.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK
Abstract :
A new method for the calibration of intensity modulators and modulated laser diodes at millimeter-wave frequencies is presented. The method uses an integrated-optic modulator as both a mixer and a frequency doubler. To demonstrate the measurement technique an intensity modulator is calibrated over the band 26.5-40 GHz. The measurement system employs no components exceeding 20 GHz (excluding the RF generator), and with relatively minor modifications measurements in excess of 60 GHz are feasible.<>
Keywords :
calibration; integrated optics; optical frequency conversion; optical modulation; 26.5 to 40 GHz; RF generator; calibration; frequency doubler; integrated-optic modulator; intensity modulators; measurement system; measurement technique; millimeter-wave frequencies; mixer; modulated laser diodes; optical down-conversion; optical modulators; Calibration; Frequency; Intensity modulation; Optical harmonic generation; Optical interferometry; Optical mixing; Optical modulation; Optical receivers; Optical sensors; Optical transmitters;
Journal_Title :
Photonics Technology Letters, IEEE
