TY - GEN
T1 - Evaluation of frequency stability of terahertz waves generated by Mach-Zehnder-modulator-based flat comb generator
AU - Morohashi, Isao
AU - Irimajiri, Yoshihisa
AU - Kumagai, Motohiro
AU - Sakamoto, Takahide
AU - Sekine, Norihiko
AU - Kawanishi, Tetsuya
AU - Yasui, Motoaki
AU - Hosako, Iwao
PY - 2013/1/1
Y1 - 2013/1/1
N2 - In order to generate a reference signal used in phase locking of quantum cascade lasers (QCLs) operating in the THz range, we adopted a photonic down-conversion technique. Optical two-tone signals are created by a combination of a Mach-Zehnder-modulator-based flat comb generator (MZ-FCG) and a dispersion-flattened dispersion-decreasing fiber (DF-DDF). THz signals generated from the two-tone signal by using a uni-traveling carrier diode (UTC-PD). We have demonstrated generation of 700 GHz signals, and confirmed that the signal has the C/N ratio of greater than 30 dB and the frequency stability of 10 -11 at the averaging time of 1 sec.
AB - In order to generate a reference signal used in phase locking of quantum cascade lasers (QCLs) operating in the THz range, we adopted a photonic down-conversion technique. Optical two-tone signals are created by a combination of a Mach-Zehnder-modulator-based flat comb generator (MZ-FCG) and a dispersion-flattened dispersion-decreasing fiber (DF-DDF). THz signals generated from the two-tone signal by using a uni-traveling carrier diode (UTC-PD). We have demonstrated generation of 700 GHz signals, and confirmed that the signal has the C/N ratio of greater than 30 dB and the frequency stability of 10 -11 at the averaging time of 1 sec.
KW - dispersion-flattened dispersion-decreasing fiber
KW - optical frequency comb
KW - terahertz wave
UR - http://www.scopus.com/inward/record.url?scp=84894210051&partnerID=8YFLogxK
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U2 - 10.1109/MWP.2013.6724056
DO - 10.1109/MWP.2013.6724056
M3 - Conference contribution
AN - SCOPUS:84894210051
SN - 9781467360715
T3 - 2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013
SP - 206
EP - 209
BT - 2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013
PB - IEEE Computer Society
T2 - 2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013
Y2 - 28 October 2013 through 31 October 2013
ER -