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CNR enhancement using Mach Zehnder filter (MZF) with tunable phase shifter in a digital/RF optical‐transmission link
Author(s) -
Lee SangHoon,
Won YongYuk,
Jung HyunDo,
Lim HaeJin,
Nam SiByung,
Han SangKook
Publication year - 2005
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.20870
Subject(s) - phase shift module , microwave , radio frequency , signal (programming language) , filter (signal processing) , wavelength division multiplexing , transmission (telecommunications) , physics , electrical engineering , electronic engineering , telecommunications , engineering , optics , computer science , wavelength , programming language
Abstract 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. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 531–533, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20870