All-optical label swapping networks and technologies

Blumenthal, D.J.; Olsson, B.-E.; Rossi, Giammarco; Dimmick, T.E.; Rau, L.; Masanovic, M.L.; Lavrova, O. A.; Doshi, R.; Jerphagnon, O.; Bowers, John E.; Kaman, V.; Coldren, L.A.; Barton, J.S.

doi:10.1109/50.908817

Cited by 381 publications

(161 citation statements)

References 32 publications

Supporting

Mentioning

149

Contrasting

Unclassified

Order By: Relevance

“…Labels are received and swapped at every node in a core network, while payload information is transparently forwarded with possible wavelength conversion [2]. Several label-coding techniques have been reported, such as serial-bit labeling [4], subcarrier multiplexing [1]- [3], and orthogonal modulation labeling [5]- [17]. The orthogonal modulation technique encodes the label information on the optical carrier wave in a modulation format that is orthogonal to that of the payload, e.g., the label information is differential phase-shift keying (DPSK) modulated on the phase or frequency-shift keying (FSK) modulated on the optical frequency, while the payload is modulated on the amplitude of the carrier; such methods are termed amplitude shift keying (ASK)/DPSK [7]- [10] and ASK/FSK [11], [12] labeling.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improve the performance of orthogonal ASK/DPSK optical label switching by DC-balanced line encoding

Chi

Zhang

et al. 2006

J. Lightwave Technol.

View full text Add to dashboard Cite

Abstract-Orthogonal amplitude shift keying/differential phase-shift keying (ASK/DPSK) labeling is a promising approach to ultrahigh packet-rate routing and forwarding in the optical layer. However, the limitation on the payload extinction ratio (ER) is a detrimental effect for network scalability and transparency. This paper presents theoretical and experimental studies of ASK/ DPSK labeling. It proposes that dc-balanced 8B10B coding can greatly improve ER tolerance, which in turn leads to better system performance. By using the 8B10B coding method, the paper demonstrates transmission and optical label swapping for a 40 Gb/s ASK payload and a 2.5 Gb/s DPSK label with an overall power penalty of 3.3 dB for the payload and 0.3 dB for the label. The experimental results also show that the ER is allowed to be as high as 12 dB.Index Terms-Amplitude shift keying, differential phase shift keying, optical label switching, orthogonal modulation.

show abstract

Section: Introductionmentioning

confidence: 99%

“…A LL-OPTICAL label switching is an important technique used to route and forward packets in future high-speed networks independently of IP packet length and payload bit rate [1]. Labels are received and swapped at every node in a core network, while payload information is transparently forwarded with possible wavelength conversion [2].…”

Section: Introductionmentioning

confidence: 99%

Improve the performance of orthogonal ASK/DPSK optical label switching by DC-balanced line encoding

Chi

Zhang

et al. 2006

J. Lightwave Technol.

View full text Add to dashboard Cite

show abstract

“…The label erasing and new label insertion operation introduces 0.5 dB of power penalty. These results indicate a potential utilisation of the presented technique in a multi-hop packet switched network.Introduction: All-optical packet switching (AOPS) is a promising candidate to route optical packets at higher bit rates and with lower power dissipation compared to electronics [1][2][3]. The key issue is to realise an AOPS node that is scalable and that allows photonic integration.…”

mentioning

confidence: 99%

All-optical label swapping of in-band addresses and 160 Gbit/s data packets

et al. 2009

View full text Add to dashboard Cite

A 1 Â 4 all-optical packet switch is presented, based on an optical label swapping technique that utilises a scalable label processor and a label rewriter with 'on the fly' operation. Experimental results show errorfree packet switching with a data payload at 160 Gbit/s. The label erasing and new label insertion operation introduces 0.5 dB of power penalty. These results indicate a potential utilisation of the presented technique in a multi-hop packet switched network.Introduction: All-optical packet switching (AOPS) is a promising candidate to route optical packets at higher bit rates and with lower power dissipation compared to electronics [1][2][3]. The key issue is to realise an AOPS node that is scalable and that allows photonic integration. Here we demonstrate a scalable 1 Â 4 all-optical packet switch in which both the label processor and the label rewriter are implemented in the optical domain. Our approach allows for encoding of 2 N addresses within a limited bandwidth. Moreover, the system that we introduce is based on 'on the fly' label processing that reduces the latencies to values that can be handled by integrated delay lines.

show abstract

“…Authors' affiliations: (1) Photonic Systems Group, Tyndall National Institute & Department of Physics, University College Cork, Lee Maltings, Cork, Ireland, Email: arvind.mishra@ucc.ie (2) School of Electronic Engineering, Dublin City University, Dublin 9, Ireland…”

mentioning

confidence: 99%

“…A number of methods of coding labels have been proposed, for either label swapping or deterministic routing algorithms [1][2][3][4][5]. Depending on the particular implementation, the overall system performance is impacted in various ways: by reducing the overall spectral efficiency [2]; by reducing the payload extinction ratio to allow sub-carrier modulation [3]; or by introducing sophisticated transmitter [4] or receiver configurations to perform label erasure and reinsertion [5].…”

mentioning

confidence: 99%