期刊
JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES
卷 36, 期 2, 页码 180-197出版社
SPRINGER
DOI: 10.1007/s10762-014-0132-6
关键词
Terahertz communication; Coherent communication; Radio over fiber; Optical frequency comb
资金
- Ministry of Internal Affairs and Communications, Japan
- Agile Deployment Capability of Highly Resilient Optical and Radio Seamless Communication Systems program of the commissioned research of the NICT
Coherent terahertz signal transmission with multilevel modulation and demodulation is demonstrated using an optical sub-harmonic IQ mixer (SHIQM), which consists of optical components in advanced optical fiber communication technologies. An optical-frequency-comb-employed signal generator is capable of vector modulation as well as frequency tunability. Digital signal processing (DSP) adopted from the recently developed optical digital coherent communication can easily demodulate multi-level modulated terahertz signals by using electrical heterodyning for intermediate-frequency (IF) down conversion. This technique is applicable for mobile backhauling in the next-generation mobile communication technology directly connected to an optical fiber network as a high-speed wireless transmission link.
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