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.

A practical vision for optical transport networking

Abstract: Optical transport networks (OTNs) will quickly evolve from dense wavelength division multiplexed (DWDM) remedies for capacity exhaust to scalable and robust optical networking applications catering to a wide variety of client signals with equally varied service requirements. This paper presents a practical vision for OTN evolution, placing it in the context of other networking trends. It also provides a brief introduction to the papers presented in this issue, which together provide a view of Lucent Technologies' Network Vision for a cost-effective, survivable, and flexible broadband optical networking infrastructure.

Constrained interleaving for 5G wireless and optical transport networks

Abstract: The present invention provides a design framework that is used to develop new types of constrained turbo block convolutional (CTBC) codes that have higher performance than was previously attainable. The design framework is applied to design both random and deterministic constrained interleavers. Vectorizable deterministic constrained interleavers are developed and used to design parallel architectures for real time SISO decoding of CTBC codes. A new signal mapping technique called constrained interleaved coded modulation (CICM) is also developed. CICM is then used to develop rate matching, spatial modulation, and MIMO modulation subsystems to be used with CTBC codes and other types of codes. By way of example, embodiments are primarily provided for improved 5G LTE and optical transport network (OTN) communication systems.

Network transceiver for extending the bandwidth of optical fiber-based network infrastructure

Abstract: A multimode wavelength division multiplexing (WDM) network transceiver and method includes a plurality of optical transmitters and a multiplexer operatively connected to each optical transmitter for receiving optical communications signals and multiplexing the signals into a multimode wavelength division multiplexed optical communications signal. A demultiplexer receives a multimode wavelength division multiplexed optical communications signal and demultiplexes the signal into a plurality of demultiplexed optical communications signals that are then received and detected within a plurality of optical receivers.

Optical subscriber network system

Abstract: In an optical subscriber network system which connects plural optical network units to an optical service unit using passive optical elements through an optical transmission line, the optical transmission line is duplexed with a lower cost. The optical service unit and the optical network units each have plural transmission-reception portions the wavelengths of which are different from each other, and the inputs and outputs of the plural transmission-reception portions are multiplexed with the wavelengths (WDM) into a single optical transmission line to form a pseudo redundant communication path between the optical service unit and the optical network units. The communication which uses a certain wavelength between the optical service unit and the optical network units is active, and the communication which uses another wavelength is a standby. When the active communication has a fault, a switchover operation to the standby communication is performed. The communication path using plural wavelengths between the optical service unit and the optical network units can select either the function of “with redundancy” or “without redundancy” or “enhanced line speed”, depending on subscribers' demands.

Next-Generation Optical Access Networks

Abstract: First-generation optical access networks have now been well-defined. This talk will focus on second- and third- generation networks including graceful evolution from single-wavelength to WDM and increasing integration of optical and wireless technologies.