Browsing by Author "Xue, Wen-Qiang"

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Cost-effective multiservice's hybrid access networks with no optical filter at remote nodes
(2008-05-01)
Lin, Chun-Ting
;
Shih, Po Tsung
;
Chen, Jason (Jyehong)
;
Peng, Peng-Chun
;
Dai, Sheng-Peng
This letter experimentally demonstrates a multi-services hybrid access network integrated radio-over-fiber and fiber-to-the-home systems which share the same distributed architecture. A 1.25-Gb/s baseband signal and a 14.375-GHz radio-frequency (RF) signal with 625-Mb/s binary phase-shift keying data are generated and transmitted employing a commercially available dual-electrode Mach-Zehuder modulator. The proposed scheme offers better performance, has no RF fading issue, can carry vector signals, and requires no optical filter at remote nodes. After transmission over 25-km single-mode fiber, the proposed scheme successfully achieves less than 0.5-dB sensitivity penalties.
Generation of carrier suppressed optical mm-wave signals using frequency quadrupling and no optical filtering
(2008)
Lin, Chun-Ting
;
Shih, Po Tsung
;
Chen, Jason (Jyehong)
;
Peng, Peng-Chun
;
Dai, Sheng-Peng
This work demonstrates a novel mm-wave generation using a frequency quadrupling technique. Only one external MZM is used and no optical filter is needed. It provides a simple and inexpensive choice for WDM RoF applications. (C)2008 Optical Society of America.
Optical millimeter-wave signal generation using frequency quadrupling technique and no optical filtering
(2008-05-01)
Lin, Chun-Ting
;
Shih, Po-Tsung
;
Chen, Jason (Jyehong)
;
Xue, Wen-Qiang
;
Peng, Peng-Chun
This letter demonstrates a novel method to generate high-purity optical millimeter-wave signals with carrier suppression by using a frequency quadrupling technique. To the authors' knowledge, this is the first time that a frequency quadrupling system requires only a single integrated Mach-Zehnder modulator without a narrowband optical filter to remove undesired optical sidebands. Since no optical filter is needed, fast frequency tuning is straightforward and this approach will be particularly attractive for optical up-conversion in wavelength-division-multiplexing radio-over-fiber systems. This letter provides both theoretical analysis and experimental demonstration. The generated optical millimeter-wave signals have very high quality with an optical carrier and harmonic distortion suppression ratio of more than 38 and 36 dB at 40 and 72 GHz, respectively.