TY - GEN
T1 - Quadruple frequency double sideband carrier suppressed modulation using high extinction ratio optical modulators for photonic local oscillators
AU - Kawanishi, Tetsuya
AU - Kiuchi, Hitoshi
AU - Yamada, Masumi
AU - Sakamoto, Takahide
AU - Tsuchiya, Masahiro
AU - Amagai, Jun
AU - Izutsu, Masayuki
PY - 2005/1/1
Y1 - 2005/1/1
N2 - We proposed a novel scheme for the fourth order harmonic generation with two Mach-Zehnder (MZ) optical modulators. High extinction ratio intensity modulation technique with active trimmers is used for high spurious suppression ratio. Each modulator has a pair of trimmers in the arms of the MZ structure. The trimmers can compensate amplitude imbalance in the MZ structure, and suppress residual carrier in double sideband suppressed carrier (DSB-SC) modulation. A photonic local signal of 42GHz was generated from a 10.5GHz modulating signal, where spurious component intensity was 41.8dBc without using any optical or electric filters for spurious suppression. The upper limit of modulating frequency in the state-of-the-art is about 50GHz. Thus, we can generate high-purity stable 200GHz photonic local signals by using this technique, which would be useful for large scale millimeter wave antenna arrays.
AB - We proposed a novel scheme for the fourth order harmonic generation with two Mach-Zehnder (MZ) optical modulators. High extinction ratio intensity modulation technique with active trimmers is used for high spurious suppression ratio. Each modulator has a pair of trimmers in the arms of the MZ structure. The trimmers can compensate amplitude imbalance in the MZ structure, and suppress residual carrier in double sideband suppressed carrier (DSB-SC) modulation. A photonic local signal of 42GHz was generated from a 10.5GHz modulating signal, where spurious component intensity was 41.8dBc without using any optical or electric filters for spurious suppression. The upper limit of modulating frequency in the state-of-the-art is about 50GHz. Thus, we can generate high-purity stable 200GHz photonic local signals by using this technique, which would be useful for large scale millimeter wave antenna arrays.
KW - Active trimmer
KW - Amplitude imbalance
KW - Double sideband suppressed carrier
KW - High carrier suppression
KW - Mach-Zehnder structure
KW - Optical modulation
UR - http://www.scopus.com/inward/record.url?scp=33847168588&partnerID=8YFLogxK
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U2 - 10.1109/mwp.2005.203615
DO - 10.1109/mwp.2005.203615
M3 - Conference contribution
AN - SCOPUS:33847168588
SN - 8995004339
SN - 9788995004333
T3 - International Topical Meeting on Microwave Photonics, MWP 2005
SP - 1
EP - 4
BT - International Topical Meeting on Microwave Photonics, MWP 2005
PB - IEEE Computer Society
T2 - International Topical Meeting on Microwave Photonics, MWP 2005
Y2 - 12 October 2005 through 14 October 2005
ER -