• Proceedings of the Optical Society of Korea Conference
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• 2000.08a
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• pp.18-19
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• 2000

In this paper, packet error rates of an all-optical packet switching node, which uses a fiber-optic delay-line matched filter as the optical packet header processor, has been calculated for the various optical pulse shapes.

• Journal of the Korean Institute of Telematics and Electronics D
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• v.34D no.8
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• pp.52-61
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• 1997

In this paper it is proposed a new architecture for N*N optical packet switching system. It consists of active-splitter type pf packet router, travelling type of optical buffer memory for packet contention resoltuion and an electronic controller. the BER performance of the proposed switching system is analyzed with respect to channel crosstalks and amplified spontaneous emissio noise form switching elements and optical amplifiers respectively. Operational validity of the proposed switching system is also experimentally proved by realizing 2*2 optical packet switching system.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.40 no.10
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• pp.79-88
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• 2003

We demonstrate a novel all-optical packet switching system that is suitable for optical ring networks. For the demonstration, video signals are encoded into optical packets which are composed of header and payload. The optical packets are all-optically processed at a switching node based on all-optical header processor, packet-level clock extraction, bit-level clock extraction, all-optical data format converter and so on.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.27 no.10C
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• pp.937-944
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• 2002

The current fast-growing Internet traffic is demanding more and more network capacity. Photonic packet switching offers high-speed, data rate/format transparency, and configurability, which are some of the important characteristics needed in future networks supporting different forms of data. In this paper, we define that optical backbone networks for IP transport consist of optical packet core switches and optical fibers. We propose a multi-link photonic packet switch managing as single media which unifies the whole bandwidth of multiple wavelengths on the optical fiber in the WDM optical networks. The proposed switch uses optical packet memories of output link equally as well as using the WDM buffer. So it cuts down the required number of buffers and realizes of the optical packet memory economically.

• Proceedings of the Optical Society of Korea Conference
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• 2002.11a
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• pp.58-59
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• 2002

Jitter noise power at the all optical packet header processor, which uses a fiber-optic delay-line matched filter, has been calculated for various optical pulse shapes.

• Journal of information and communication convergence engineering
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• v.9 no.5
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• pp.551-555
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• 2011

Optical packet switching is a promising technology, which can integrate both data and optical network. In this paper, we present a comparative study of various traffic arrival approaches in WDM packet switches. The comparison is made based on packet loss rate and average delay under uniform and self-similar Pareto traffic. Computer simulations are performed in order to obtain the switch performance metrics. Study shows that burstiness of data traffic has a strong negative impact in the performance of WDM packet switches.

• Convergence Security Journal
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• v.12 no.1
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• pp.35-42
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• 2012

Increase of data traffic and the advent of new real-time services require to change from the traditional TDM-based (Time Division Multiplexing) networks to the optical networks that soft and dynamic configuration. Voice and lease line services are main service area of the traditional TDM-based networks. This optical network became main infrastructure that offer many channel that can convey data, video, and voice. To provide high resilience against failures, Packet-optical networks must have an ability to maintain an acceptable level of service during network failures. Fast and resource optimized lightpath restoration strategies are urgent requirements for the near future Packet-optical networks with a Generalized Multi-Protocol Label Switching(GMPLS) control plane. The goal of this paper is to provide packet-optical network with a hierarchical multi-layer recovery in order to fast and coordinated restoration in packet-optical network/GMPLS, focusing on new implementation information. The proposed schemes do not need an extension of optical network signaling (routing) protocols for support.

• Proceedings of the KIEE Conference
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• 2001.07c
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• pp.1832-1834
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• 2001

A new method of all optical packet header recognition scheme using a photorefractive hologram filter is presented. Wavelength encoded packet that has the header of a specific wavelength is assumed and the photorefractive filter can detect the wavelength. Concatenated electronics drives the optical switch to route the $\lambda$-encoded optical packet. The delay time at the switched signals are measured and compared with the original data stream.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.05a
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• pp.491-493
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• 2013

In this paper, standardization subject of packet optical broadband is classified Ethernet/MPLS-TP based packet transport technology(IEEE 802, IETF), PON based optical access network technology(ITU-T), OTN based optical access network technology(ITU-T) and Ehternet based data center technoloty(IEEE 802) for establishing standardization strategy. therefor studing domestic standardization items and driving strategy for each technologies.

• Proceedings of the Optical Society of Korea Conference
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• 2007.07a
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• pp.305-306
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• 2007