Showing papers by "Leif Katsuo Oxenløwe published in 2006"
01 Sep 2006
TL;DR: In this paper, a square spectrum is optically Fourier transformed into a square pulse in the time domain, which is used to demultiplex a 160 Gb/s data signal with a significant increase in jitter tolerance.
Abstract: A square spectrum is optically Fourier transformed into a square pulse in the time domain. This is used to demultiplex a 160 Gb/s data signal with a significant increase in jitter tolerance to 2.6 ps.
10 citations
05 Mar 2006
TL;DR: In this article, in line wavelength conversion of 160 Gb/s data by Raman-assisted notch-filtered XPM for 130 km total transmission, the improvement in system performance from applying Raman gain during conversion was shown.
Abstract: In-line wavelength conversion of 160 Gb/s data by Raman-assisted notch-filtered XPM is demonstrated for 130 km total transmission. The improvement in system performance from applying Raman gain during conversion is shown.
4 citations
05 Mar 2006
TL;DR: In this paper, the impact of gating timing jitter on a 160 Gb/s demultiplexer was investigated by using two pulse sources with different timing jitters properties.
Abstract: The impact of gating timing jitter on a 160 Gb/s demultiplexer is investigated by using two pulse sources with different timing jitter properties. It is found that jitter in the range 20 kHz-10 MHz is essential to minimize.
3 citations
18 Jun 2006
TL;DR: In this paper, the authors report on the recent advances in ultrafast optical communications relying on ultra-short pulses densely stacked in ultra-high bit rate serial data signals at a single wavelength.
Abstract: This paper reports on our recent advances in ultra-fast optical communications relying on ultra-short pulses densely stacked in ultra-high bit rate serial data signals at a single wavelength. The paper describes details in solutions for the network functionalities of wavelength conversion and clock recovery at bit rates up to 320 Gb/s.
2 citations
01 Sep 2006
TL;DR: In this paper, the first demonstration of cross-phase modulation-based wavelength conversion at 320 Gb/s assisted by Raman gain and a notch filtering scheme is presented. Error free operation of the wavelength converter is demonstrated.
Abstract: We report on the first demonstration of cross-phase modulation-based wavelength conversion at 320 Gb/s assisted by Raman gain and a notch filtering scheme. Error free operation of the wavelength converter is demonstrated.
1 citations
21 May 2006
TL;DR: N numerically investigate the phase noise requirements for combined electrical/optical local oscillators in a PLL-based clock recovery and suggests for reducing the timing jitter are given.
Abstract: We numerically investigate the phase noise requirements for combined electrical/optical local oscillators in a PLL-based clock recovery. Suggestions for reducing the timing jitter are given.
1 citations
01 Oct 2006
TL;DR: In this paper, a flat-top pulse derived from a 3 nm wide square filter is obtained, and used to gate an all-optical OTDM demultiplexer, yielding an error-free timing jitter tolerance of 3 ps for 80 Gb/s and 160 GP/s data signals.
Abstract: For high-speed serial data, timing tolerance is crucial for switching and regeneration. The authors propose a novel scheme to generate flat-top pulses, for use as gating control pulses. The scheme relies on spectral shaping by a square-shaped filter, followed by a linear transformation of the spectral shape into the time domain, referred to as the optical Fourier transform technique. A 3 ps flat-top pulse derived from a 3 nm wide square filter is obtained, and used to gate an all-optical OTDM demultiplexer, yielding an error-free timing jitter tolerance of 3 ps for 80 Gb/s and 160 Gb/s data signals.
1 citations
01 Sep 2006
TL;DR: In this article, a demonstration of simultaneous 80 Gbit/s add-drop multiplexing in a non-linear optical loop mirror is presented, where data pulses are actively dropped and added via cross-phase modulation by the same control pulse.
Abstract: We report on a demonstration of simultaneous 80 Gbit/s add-drop multiplexing in a non-linear optical loop mirror. Data pulses are actively dropped and added via cross-phase modulation by the same control pulse.
1 citations
21 May 2006
TL;DR: In this article, the authors demonstrate transmission of 16 WDM channels at 10 Gbit/s with 50 GHz channel spacing over 3 times 80 km NZDSF, using only a single Raman-pumped dispersion compensating module positioned before the receiver.
Abstract: We demonstrate transmission of 16 WDM channels at 10 Gbit/s with 50 GHz channel spacing over 3 times 80 km NZDSF, with small OSNR penalty, using only a single Raman-pumped dispersion compensating module positioned before the receiver.
1 citations
25 Jun 2006
TL;DR: In this paper, a standard dual-stage EDFA is combined with a dispersion-compensating Raman amplifier to obtain flat C-band gain in a high-gain range from 20 dB to 33 dB.
Abstract: A standard dual-stage EDFA is combined with a dispersion-compensating Raman amplifier to obtain flat C-band gain in a high-gain range from 20 dB to 33 dB. The amplifier may find use in long-span repeater links.
1 citations
01 Oct 2006
TL;DR: In this paper, error-free simultaneous add-drop multiplexing of 160 Gb/s data in a non-linear optical loop mirror composed of 100 m highly nonlinear fiber was demonstrated.
Abstract: We report on a demonstration of error-free simultaneous add-drop multiplexing of 160 Gb/s data in a non-linear optical loop mirror composed of 100 m highly non-linear fibre.