Optical Transport Network

About: Optical Transport Network is a research topic. Over the lifetime, 6055 publications have been published within this topic receiving 85783 citations.

Digital subcarrier optical network utilizing digital subcarrier cross-connects with increased energy efficiency

Abstract: The present invention provides reduced power dissipation and other benefits at the optical transport network layer by utilizing a digital subcarrier optical network comprising multiple digital subcarrier cross-connect switches. This offers several advantages for optical networks, including spectral efficiency and robustness against signal corruption and consumption of less energy than traditional TDM-based electric switches (OTN/SONET/SDH).

Optimal-Complexity Optical Router

Abstract: In the past years, electronic routers have had trouble keeping up with the increase in optical fiber capacity. As their power consumption has grown exponentially and already exceeds standards, it seems that an alternative solution is mandatory. Many have suggested all-optical routers as an alternative. However, these are deemed too complex, especially given the need to implement both switching and buffering, even though their fundamental complexity has apparently never been analyzed. In this paper, we study the number of fundamental optical components (2 times 2 switches and fiber delay lines) needed to emulate ideal routers. We first demonstrate that an N times N router with a buffer size of B per port needs at least thetas(N log(N B)) components, and then build a construction that achieves this lower bound. On the way, we also present an optical buffer construction of size B that works with thetas(log(B)) components, which is also shown to be a lower bound. Finally, we generalize this result to different router architectures and scheduling disciplines.

Optical rate conversion for high-speed TDM networks

Abstract: Rate conversion of ultrahigh-speed optical data streams to lower rate optical data streams that can be detected and processed electronically is essential in 100-Gb/s time-division multiplexed (TDM) multiaccess networks. In this letter, we demonstrate all-optical rate conversion.

The optical network control plane: state of the standards and deployment

Abstract: The notion of an optical control plane has rapidly ascended from being a mere concept to a detailed set of protocol standards developed with broad industry participation. In this article we present a brief overview of optical control plane architecture and the associated protocols. We then examine the business drivers and inhibitors behind the optical control plane effort, the current state of the standards, interoperability status, and the open issues that need to be resolved before widescale deployment of this new technology can begin.

Optical transceiver integrated with optical time domain reflectometer monitoring

Abstract: An optical transceiver having an integrated optical time domain reflectometer monitoring unit and methods for using the same are disclosed. The disclosure relates to an optical transceiver comprising an optical device comprising a wavelength division multiplexing system (WDM), a data signal driver, a data signal limiting amplifier, and an optical time domain reflectometer (OTDR) data processing module. Furthermore, the optical transceiver is particularly advantageous in an optical line terminal (OLT) and/or a passive optical network (PON). The integrated OTDR data processing module can protect the optical transceiver, ensure successful monitoring data, simplify network wiring and decrease system and network costs by decreasing the number of OTDR modules and WDM units.