中国科技论文在线

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2008年02月20日

【期刊论文】A Novel Composite Method for Ultra-Wideband Doublet Pulses Generation

陈宏伟， Hongwei Chen， Member， IEEE， Minghua Chen， Ciyuan Qiu， and Shizhong Xie， Senior Member

IEEE PHOTONICS TECHNOLOGY LETTERS, VOL. 19, NO. 24, DECEMBER 15, 2007 2021，-0001，（）：

-1年11月30日

A novel composite approach to generate ultra-wideband (UWB) doublet pulses in optical domain through an electrical Gaussian pulse is proposed and demonstrated in this letter. Two pulses with reversed polarity generated by polarization modulation are fed into a differential group delay device and a semiconductor optical amplifier (SOA) wherein the optical pulse profile is modified. Doublet pulses are obtained after optical–electrical detection due to gain saturation and recovery mechanism in the SOA. The fractional bandwidth of doublet pulses exceeds 180%, fulfilling the UWB requirements.

Doublet pulse， polarization modulation， semiconductor optical amplifier (， SOA)，， ultra-wideband (， UWB)，

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2008年02月20日

【期刊论文】Optical labeling scheme using polarization shift keying/vestigial sideband carriersuppressed return-to-zero orthogonal modulation

陈宏伟， Hongwei Chen， Minghua Chen， Shizhong Xie， and Bingkun Zhou

May 1, 2006, Vol. 31, No. 9, OPTICS LETTERS 1187 0146-9592，-0001，（）：

-1年11月30日

摘要

We propose and experimentally demonstrate a polarization shift keying label and a vestigial sideband carrier-suppressed return-to-zero payload scheme for a 43 Gbit/s all-optical label switching network. This scheme has a narrow channel bandwidth and a low penalty due to polarization mode dispersion impairments, which confirm it as a candidate technique for the next generation of optical networks.

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2008年02月20日

【期刊论文】Investigation of vestigial sideband carrier suppressed return-to-zero formats due to optical filtering in a 40-Gbit/s system

陈宏伟， Hongwei Chen， MEMBER SPIE， Minghua Chen， Shizhong Xie， and Bingkun Zhou

April 2006/Vol. 45(4)，-0001，（）：

-1年11月30日

摘要

We experimentally investigate the influence of vestigial sideband (VSB) filtering in a 40-Gbit/s optical system. Two kinds of optical filters and different pseudorandom bit sequences (PRBS) are used in experiment. The results show that optical filter ramp and PRBS length will cause different impacts in a VSB carrier suppressed return-to-zero system.

vestigial sideband， pseudorandom bit sequence length， filtering impact

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2008年02月20日

【期刊论文】UWB monocycle pulse generation by optical polarisation time delay method

陈宏伟， H. Chen， M. Chen， C. Qiu， J. Zhang and S. Xie

ELECTRONICS LETTERS 26th April 2007 Vol. 43 No. 9，-0001，（）：

-1年11月30日

摘要

A novel method to generate ultra-wideband (UWB) monocycle pulses based on birefringence time delay in polarisation-maintaining fibre (PMF) is proposed and experimentally demonstrated. Two polarityreverse pulses are generated by polarisation modulation using a single phase modulator. They are delayed in PMF with enough time to generate monocycle pulse.

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2008年02月20日

【期刊论文】Vestigial-Sideband Payload for High-Speed All-Optical Label-Switching Network

陈宏伟， Hongwei Chen， Minghua Chen， Member， IEEE， Shizhong Xie， Senior Member， and Bingkun Zhou

JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 23, NO. 10, OCTOBER 2005，-0001，（）：

-1年11月30日

摘要

A novel vestigial-sideband (VSB) payload scheme is proposed for high-speed all-optical label-switching (AOLS) networks. The combination and separation of the VSB payload and the optical label is experimentally demonstrated, and the influences of the power-split ratio, time-delay interference, interferometric noise (IN), and wavelength difference between the payload and the label are analyzed. Simulation and experiment results show that this VSB payload scheme can highly reduce the channel bandwidth and it is easy to realize by using optical filters, so it is a potential technique to be used in optical networks with bit rate of 40 Gb/s.

All-optical label switching (， AOLS)，， label， optical networks， payload， vestigial sideband

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