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High-Speed Control of Lightwave Amplitude, Phase, and Frequency by Use of Electrooptic Effect

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3 Author(s)
Tetsuya Kawanishi ; Nat. Inst. of Inf. & Commun. Technol., Tokyo ; Takahide Sakamoto ; Masayuki Izutsu

High-speed control of lightwave using electrooptic (EO) effect is investigated in this paper. Agile optical frequency shift can be achieved by optical single-sideband (SSB) and frequency-shift-keying (FSK) modulators, where high-speed optical phase-shift-keying (PSK) signals can also be generated by using FSK/SSB modulators. We also describe ultrahigh extinction ratio optical intensity modulation (IM) technique for two-tone lightwave signals with high spurious suppression, which is useful for photonic microwave and millimeter-wave generation. In addition, we investigated high-order optical sideband generation techniques: quadruple dual-sideband suppressed carrier (QDSB-SC) modulation and reciprocating optical modulation (ROM). Sub-tetrahertz signals can be obtained from lightwaves with high-order sidebands

Published in:

IEEE Journal of Selected Topics in Quantum Electronics  (Volume:13 ,  Issue: 1 )