Ciena

About: Ciena is a company organization based out in Hanover, Maryland, United States. It is known for research contribution in the topics: Signal & Node (networking). The organization has 1259 authors who have published 1557 publications receiving 25989 citations.

Data Converter Interleaving: Current Trends and Future Perspectives

Abstract: Future generations of optical networks will require optical interfaces that operate beyond 1 Tb/s to keep up with the exploding worldwide Internet data capacity. The data converters, digital- to-analog converter (DAC) and analog-to-digital converter (ADC), significantly define the signal bandwidth that can be transmitted or received with an electro-optic transceiver. The foreseen improvements of complementary metal oxide semiconductor (CMOS) data converters in upcoming CMOS technology nodes do not scale to the expected interface data rates for future communications systems. To address this bandwidth requirement, parallel data converter architectures (i.e., interleaved data converters) are an intriguing solution to enable performance beyond the limits imposed by continuing traditional CMOS approaches. In this article, we discuss the performance requirements for future data converters and provide an overview of the projected evolution of fiber optic networks and the limits imposed by CMOS-only data converters. Interleaved data converter architectures, in both the electrical and optical domains, are described and discussed. Finally, an outlook is given on the future development of next generation DAC and ADC architectures. This article is based on the presentations and discussions in the workshop "Super DACs and ADCs -- To Interleave or Not to Interleave" at the Optical Networking and Communication Conference 2019.

Spectral conditioning system and method

Abstract: A system and method for spectral conditioning an optical signal An optical filter has an input for receiving an emitted optical signal and an output providing a filtered optical signal The filter has a corresponding filter profile which includes a high wavelength skirt at an upper wavelength region of the filter profile A laser is optically coupled to the optical filter input and emits the emitted optical signal The laser is controllable to emit the optical signal at a wavelength proximate to the optical filter high wavelength skirt

Agile filterless optical networking

Abstract: Filterless optical networks based on broadcast-and-select nodes equipped with coherent transceivers can be considered as very attractive solutions for cost-effective and flexible capacity allocation in terrestrial and submarine applications. In this paper, we present an overview of the research on filterless optical networking in the last 10 years.

Correction to “Optical Transmission Evolution: From Digital to Analog to ? Network Tradeoffs Between Optical Transparency and Reduced Regeneration Cost”

Abstract: Recent technology developments have made high-capacity long-distance optical transmission routine out to several thousand kilometers, bringing the ideal of an optically transparent network closer than ever before. At the same time, advances in semiconductor processing and packaging have made it possible to achieve compact, very low cost optoelectronic building blocks. The objective of this workshop is to examine these technology trends to understand how they compete or cooperate to increase network performance while reducing cost.

Data synchronization system and methods in a network using a highly-available key-value storage system

Abstract: A data synchronization method, in a network element operating in a network, includes generating an event at the network element that needs to be synchronized with other devices in the network; based on assigned tokens for the network element, generating a row key for the event; and providing the row key to a Highly-Available (HA) key-value storage system for synchronization therewith, wherein the HA key-value storage system includes a plurality of nodes including the network element and the other devices.