TY - GEN
T1 - Frequency chirp modulation by electro-optic modulator integrated with microwave rat-race circuit and measurement of chirp parameter by using optical fiber dispersion
AU - Nakamura, Ryota
AU - Yamamoto, Katsuyuki
AU - Kawai, Tadashi
AU - Enokihara, Akira
AU - Yamamoto, Naokatsu
AU - Kawanishi, Tetsuya
N1 - Publisher Copyright:
© 2016 IEEE.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2016/8/9
Y1 - 2016/8/9
N2 - The rat-race (RR) circuit, which operates as a 180-degree hybrid, with an asymmetric power split ratio was integrated with the dual electrode type electro-optic modulator on the same substrate. Thereby, frequency chirp modulation with a compact configuration was realized. The RR circuit was designed with 4.5 1 power split ratio on a z-cut LiNbO3 substrate. The operation of the modulator was confirmed by observing the output light spectra. Moreover, the chirp parameter was directly measured by using the chromic dispersion of the optical fiber, where the power penalty of detected modulation signals transmitted through optical fiber was observed as a function of the fiber distance. The chirp parameter of the modulated light at 10 GHz was confirmed to be 0.47 by the measurement.
AB - The rat-race (RR) circuit, which operates as a 180-degree hybrid, with an asymmetric power split ratio was integrated with the dual electrode type electro-optic modulator on the same substrate. Thereby, frequency chirp modulation with a compact configuration was realized. The RR circuit was designed with 4.5 1 power split ratio on a z-cut LiNbO3 substrate. The operation of the modulator was confirmed by observing the output light spectra. Moreover, the chirp parameter was directly measured by using the chromic dispersion of the optical fiber, where the power penalty of detected modulation signals transmitted through optical fiber was observed as a function of the fiber distance. The chirp parameter of the modulated light at 10 GHz was confirmed to be 0.47 by the measurement.
KW - Chirp modulation
KW - Electro-optic modulators
KW - Microwave circuits
KW - Microwave photonics
KW - Optical fiber dispersion
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U2 - 10.1109/MWSYM.2016.7539999
DO - 10.1109/MWSYM.2016.7539999
M3 - Conference contribution
AN - SCOPUS:84985034348
T3 - IEEE MTT-S International Microwave Symposium Digest
BT - 2016 IEEE MTT-S International Microwave Symposium, IMS 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 IEEE MTT-S International Microwave Symposium, IMS 2016
Y2 - 22 May 2016 through 27 May 2016
ER -