Journal article
An optical IM/FSK coding technique for the implementation of a label-controlled arrayed waveguide packet router
In this paper, we present a new concept of optical packet/burst switching suitable for generalized multiprotocol label switched (GMPLS)-based optical networks. In such networks, optical labeled switched paths are being established in a similar way as label-switched paths in MPLS. We use a wavelength label as well as an orthogonally modulated label, with respect to the payload modulation format, and which is encoded using either frequency-shift keying (FSK) or differential phase-shift keying (DPSK).
Wavelength is used for switching in the node, whereas the orthogonal label defines the label-switched path. We present both simulation and experimental results to assess transmission performance of the proposed combined modulation scheme. In addition, we propose a suitable optical node architecture that can take advantage of this stacked label concept.
Toward this, we use widely tunable wavelength converters to efficiently route IM/FSK (or IM/DPSK) optically labeled packets in an arrayed-waveguide grating (AWG)-based node structure. We present performance simulation results in terms of packet loss ratio and internal block probability. Internal blocking is an inherent problem of AWG optical routers, and a specific wavelength assignment algorithm has been developed to minimize it.
Finally, the feasibility of IM/FSK transmission is experimentally demonstrated over an 88-km single-mode fiber span, and novel aspects of FSK generation and detection techniques are presented.
Language: | English |
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Publisher: | IEEE |
Year: | 2003 |
Pages: | 2617,2618,2619,2620,2621,2622,2623,2624,2625,2626,2627,2628 |
ISSN: | 15582213 and 07338724 |
Types: | Journal article |
DOI: | 10.1109/JLT.2003.819143 |
AWG optical routers Burst switching DPSK Differential quadrature phase shift keying FSK FSK generation Frequency shift keying GMPLS-based optical networks Multiprotocol label switching Optical arrays Optical fiber networks Optical modulation Optical packet switching Optical waveguides Phase modulation arrayed waveguide gratings differential phase shift keying differential phase-shift keying frequency shift keying frequency-shift keying generalized multiprotocol label switched based optical networks internal block probability label-controlled arrayed waveguide packet router label-switched path label-switched paths modulation scheme multiprotocol label switching optical IM/FSK coding technique optical fibre networks optical node architecture optical packet/burst switching optical wavelength conversion optically labeled packets orthogonally modulated label packet loss ratio packet switching payload modulation format single-mode fiber span stacked label concept telecommunication network routing telecommunication switching wavelength division multiplexing widely tunable wavelength converters