TY - JOUR
T1 - Direct measurement of chirp parameters of high-speed Mach-Zehnder-type optical modulators
AU - Kawanishi, Tetsuya
AU - Kogo, Kenji
AU - Oikawa, Satoshi
AU - Izutsu, Masayuki
PY - 2001/8/15
Y1 - 2001/8/15
N2 - A method is described for measuring the chirp parameters and optical responses of Mach-Zehnder-type optical modulators by using an optical spectrum analyzer. The chirp parameter and the optical response for small-signal operation are expressed by the magnitude of the phase induced in each optical path of the Mach-Zehnder waveguides. The induced phase can be obtained from the ratio of the high-order optical harmonic intensities generated by large-signal operation in the millimeter-wave region. This method permits the chirp parameter to be evaluated at a specific frequency, while it is assumed to be independent of the frequency of the applied electric rf signal in the conventional method.
AB - A method is described for measuring the chirp parameters and optical responses of Mach-Zehnder-type optical modulators by using an optical spectrum analyzer. The chirp parameter and the optical response for small-signal operation are expressed by the magnitude of the phase induced in each optical path of the Mach-Zehnder waveguides. The induced phase can be obtained from the ratio of the high-order optical harmonic intensities generated by large-signal operation in the millimeter-wave region. This method permits the chirp parameter to be evaluated at a specific frequency, while it is assumed to be independent of the frequency of the applied electric rf signal in the conventional method.
KW - Chirp parameter
KW - Mach-Zehnder structure
KW - Optical harmonics
KW - Optical modulator
UR - http://www.scopus.com/inward/record.url?scp=0035881945&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035881945&partnerID=8YFLogxK
U2 - 10.1016/S0030-4018(01)01352-9
DO - 10.1016/S0030-4018(01)01352-9
M3 - Article
AN - SCOPUS:0035881945
VL - 195
SP - 399
EP - 404
JO - Optics Communications
JF - Optics Communications
SN - 0030-4018
IS - 5-6
ER -