Institution
Ciena
Company•Hanover, Maryland, United States•
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.
Topics: Signal, Node (networking), Optical performance monitoring, Optical fiber, Optical cross-connect
Papers published on a yearly basis
Papers
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13 Jun 2013TL;DR: In this paper, a first encoder processes an N-bit input vector in accordance with a first mapping to generate a corresponding M-bit data stream, and then a constellation mapper maps the encoded signal to symbol values, and a modulator modulates a carrier light to generate an optical signal for transmission through the optical communications system.
Abstract: A method of transmitting a data signal using an optical transmitter of an optical communications system. A first encoder processes an N-bit input vector in accordance with a first mapping to generate a corresponding M-bit data stream. A Forward Error Correction encoder processes the M-bit data stream in accordance with a predetermined FEC encoding scheme to generate an encoded signal. A constellation mapper maps the encoded signal to symbol values in accordance with a predetermined modulation scheme to generate a corresponding symbol stream. A modulator modulates a carrier light in accordance with the encoded symbol stream to generate an optical signal for transmission through the optical communications system. The first mapping can be adjusted to maximize performance of the optical communications system.
17 citations
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31 Oct 2008TL;DR: In this paper, the authors provide a detailed analysis of the PMDC and de-multiplexer for bit-aligned and bit-interleaved polarization multiplexed optical transmission systems.
Abstract: The present disclosure provides polarization mode dispersion compensation (PMDC) and polarization de-multiplexing systems and methods for polarization multiplexed (PolMux) optical transmission systems. The PMDC detects an error signal before a polarization splitter in PolMux systems for controlling polarization controllers (PC) and/or DGDs in the PMDC for return-to-zero (RZ) differential m-phase shift keying (DmPSK) signals. For bit-aligned PolMux systems, the error signal could be the level of clock frequency at one, two, or more times of the baud rate at one polarization. For bit-interleaved PolMux systems, the error signal could be the level of clock frequency at two times of the baud rate at one polarization. The PMDC can operate in PolMux systems with any arbitrary time offset between the two polarizations. The polarization de-multiplexer utilizes error detection at both output arms of a polarization splitter to mitigate PDL impact on any PolMux type of signal.
17 citations
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16 Jun 2000TL;DR: In this paper, the authors proposed a network device that fully utilizes the available space in a standard telco rack through the use of multiple mid-planes, including switch fabric cards and/or control processor cards.
Abstract: The present invention provides a network device that fully utilizes the available space in a standard telco rack through the use of multiple mid-planes. Full utilization of available space allows a high switching capacity network device including both physical layer switch/router subsystems and upper layer switch/router subsystems to be fit in one telco rack. Inter-mid-plane connections may be provided by connecting switch fabric cards and/or control processor cards to each of the mid-planes. Providing a multi-layer network device in one telco rack allows for intelligent layer 1 switching (for example, dynamic network connection set up), allows for one network management system to control both layer 1 and upper layer networks and eliminates grooming fees. Compared with separate layer 1 and upper layer network devices or a multi-layer network device occupying multiple telco racks, a single network device saves valuable telco site space and reduces expenses by sharing overhead such as the chassis, power and cooling.
17 citations
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17 Mar 2002TL;DR: In this paper, different implementations for an optical layer in the context of different traffic loads were analyzed and the authors observed limited transparency domains: Deg 3+ OEO, offers the most "cost" effective solution for 1+1 protection scheme.
Abstract: Summary form only given. Analyzing the different implementations for an optical layer in the context of different traffic loads, we observe limited transparency domains: Deg 3+ OEO, offers the most "cost" effective solution for 1+1 protection scheme. Network capacity was reduced by 45% even with a large traffic load of 8 Tb/s (1+1). With optical cross-connects (OXCs) at degree 3 or higher nodes, shared mesh can offer additional savings. The primary impact in capacity savings was due to improved bandwidth utilization of the transport layer indicating that core grooming is a critical component of cost effective and flexible optical network design.
17 citations
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26 Jul 2001TL;DR: In this article, the authors present a system for automatic end-to-end path provisioning for SONET networks, where path parameters are obtained for each network element, and the discovery of paths is performed.
Abstract: Systems and methods for automatic end-to-end paths for SONET networks are disclosed. The method for path provisioning generally includes obtaining path parameters for each network element, performing discovery of paths including determining connection possibilities based upon the path parameters, and provisioning an end-to-end STS-n path based on the paths resulting from the discovery.
17 citations
Authors
Showing all 1261 results
Name | H-index | Papers | Citations |
---|---|---|---|
Hsiang-Tsung Kung | 65 | 359 | 25458 |
Amir K. Khandani | 48 | 394 | 9590 |
Kim B. Roberts | 41 | 203 | 5605 |
Weidong Zhou | 40 | 314 | 5885 |
Seb J. Savory | 38 | 240 | 7292 |
Zuyuan He | 38 | 498 | 5643 |
Chandra Sekhar Bontu | 37 | 144 | 4147 |
Leo Strawczynski | 33 | 75 | 3795 |
Maurice O'Sullivan | 28 | 126 | 2615 |
John C. Cartledge | 27 | 245 | 2686 |
Qunbi Zhuge | 24 | 180 | 2006 |
Yun Wang | 23 | 77 | 1803 |
David Côté | 22 | 40 | 2254 |
Petar Djukic | 22 | 60 | 1734 |
Andrzej Borowiec | 21 | 53 | 1717 |