CNR enhancement using Mach-Zehnder Filter (MZF) with tunable phase shifter in a digital/RF optical-transmission link

Sang Hoon Lee, Yong Yuk Won, Hyun Do Jung, Hae Jin Lim, Si Byung Nam, Sang Kook Han

Research output: Contribution to journalArticle


We experimentally demonstrate a digital/RF WDM-link system, which transmits a 1.25-Gb/s digital data stream and 1.8-GHz RF signals over a single-mode fiber, and simultaneously detect the signals using a single photodiode. We propose a novel suppression scheme employing a Mach-Zehnder filter (MZF) to improve the CNR of the RF signal for the case where the digital and RF channels are located close to each other.

Original languageEnglish
Pages (from-to)531-533
Number of pages3
JournalMicrowave and Optical Technology Letters
Issue number6
Publication statusPublished - 2005 Jun 20


All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

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