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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 30, Iss. 3 — Feb. 1, 2012
  • pp: 298–303

Generation and Transmission of BB/MW/MMW Signals by Cascading PM and MZM

Chung-Yi Li, Heng-Sheng Su, Ching-Hung Chang, Hai-Han Lu, Po-Yi Wu, Chia-Yi Chen, and Cheng-Ling Ying

Journal of Lightwave Technology, Vol. 30, Issue 3, pp. 298-303 (2012)

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A bidirectional three-band lightwave transport system is proposed and experimentally demonstrated for both fiber-to-the-X (FTTX) and radio-over-fiber (RoF) networks. By cascading a phase modulator (PM) and a Mach-Zehnder modulator (MZM) to generate multiple coherent lightwaves, hybrid 1.25 Gbps baseband (BB), 1.25 Gbps/20 GHz microwave (MW), and 1.25 Gbps/40 GHz millimeter-wave (MMW) downstream signals and a 1.25 Gbps BB upstream signal are simultaneously transmitted. Furthermore, with an assistance of an optical signal-to-noise ratio (OSNR) enhancement circuit, sufficient low bit error rate (BER) values are experimentally achieved for both down-link BB/MW/MMW and up-link BB signals. No additional high-frequency local oscillator, mixers and upstream laser diode are required in both transmitter and receiver sites. Under this architecture, both wire-lined and wireless clients can be simultaneously served without using any extra device/equipment to convert the downstream signals among BB, MW and MMW formats.

© 2011 IEEE

Chung-Yi Li, Heng-Sheng Su, Ching-Hung Chang, Hai-Han Lu, Po-Yi Wu, Chia-Yi Chen, and Cheng-Ling Ying, "Generation and Transmission of BB/MW/MMW Signals by Cascading PM and MZM," J. Lightwave Technol. 30, 298-303 (2012)

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