Advanced Tunable Optical Filter for Fiber Optic Communication Network
Advanced Tunable Optical Filter for Fiber Optic Communication Network

Author:

Publisher:

Published: 2000

Total Pages: 0

ISBN-13:

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This report covers Phase II work for the development of dynamically reconfigurable WDM components based on the use of collinear beam acousto-optic tunable filters (AOTF). These include optical add and drop multiplexers (ODM), optical cross-connects (OXC), and dynamic fiber amplifier equalizers (DFAE). The project included three tasks: (A) AOTF performance improvement: new designs and fabrication techniques were investigated. A demonstration model 100 GHz channel spacing AOTF was constructed that achieved 0.5 nm FWHM,

A Very Compact, High Speed and Rugged Acousto-Optic Tunable Filter for Wavelength Division Demultiplexing in Fiber Optic Communication Networks. Phase 1
A Very Compact, High Speed and Rugged Acousto-Optic Tunable Filter for Wavelength Division Demultiplexing in Fiber Optic Communication Networks. Phase 1

Author:

Publisher:

Published: 1995

Total Pages: 0

ISBN-13:

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Novel concepts of near-collinear/collinear acousto-optic interactions have been investigated during this SBIR Phase I program. As a result, several new acousto-optic tunable filters have been built and tested. The program is highlighted by: (1) Design, fabrication and experimental demonstration of a novel TeO2 near-collinear acousto-optic tunable filter has been designed, fabricated and tested. The device exhibits a 1.29 nm spectral resolution and a 160 mw RF drive power at 1523 nm. (2) Design, fabrication and experimental demonstration of a novel polarization insensitive TeO2 near-collinear acousto-optic tunable filter. For random input light, an overall insertion loss

Proceedings of the First Army Research Laboratory Acousto-Optic Tunable Filter Workshop
Proceedings of the First Army Research Laboratory Acousto-Optic Tunable Filter Workshop

Author: Neelam Gupta

Publisher:

Published: 1997-03-01

Total Pages: 224

ISBN-13: 9781423568667

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Acoustic optic tunable filter (AOTF technology is a recent development that offers potential for rapid, frequency agile tuning over a large optical wavelength range. An AOTF is an electronically tunable phase grating set up in an anisotropic crystal by the propagation of an ultrasonic wave in the crystal. Such filters have many attractive features, such as small size, lightweight, computer controlled operation, large optical wavelength range of operation, and no moving parts; and their operation can be made ultrasensitive by the use of advanced signal processing algorithms. These filters are being used in many applications such as the design of new spectroscopic instruments, remote detection and monitoring of chemicals, optical communication networks, tuning of laser cavities, etc.

Acousto-Optic Tunable Filter for Time-Domain Processing of Ultra-Short Optical Pulses
Acousto-Optic Tunable Filter for Time-Domain Processing of Ultra-Short Optical Pulses

Author: M. E. Fermann

Publisher:

Published: 1992

Total Pages: 5

ISBN-13:

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The application of acousto-optic tunable filters for shaping of ultra-fast pulses in the time domain is analyzed and demonstrated. With the rapid advance of acousto-optic tunable filter (AOTF) technology, the opportunity for sophisticated signal processing capabilities arises. AOTFs offer unique processing functions, since they may be designed for operation at 1.55 micrometers and allow the simultaneous handling of up to 100 frequency channels with a high spectral resolution and with processing times of a few microsec, i.e., some three orders of magnitude faster than possible with any other technology. Previous applications of the multi-channel capability of the AOTF have concentrated on narrow-bandwidth optical signals like-in gain equalization of erbium doped fiber amplifiers. Here we show that AOTFs can also be used for the manipulation of ultrashort optical pulses by correlated amplitude and phase filtering of the multiple optical frequency components composing the ultrashort pulse. To our knowledge this is the first demonstration of the AOTF for ultra-fast time-domain signal processing.

Fiber-Optic Communication Systems
Fiber-Optic Communication Systems

Author: Govind P. Agrawal

Publisher: John Wiley & Sons

Published: 2021-06-02

Total Pages: 548

ISBN-13: 1119737389

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Discover the latest developments in fiber-optic communications with the newest edition of this leading textbook In the newly revised fifth edition of Fiber-Optic Communication Systems, accomplished researcher and author, Dr. Govind P. Agrawal, delivers brand-new updates and developments in the science of fiber optics communications. The book contains substantial additions covering the topics of coherence detection, space division multiplexing, and more advanced subjects. You'll learn about topics like fiber’s losses, dispersion, and nonlinearities, as well as coherent lightwave systems. The latter subject has undergone major changes due to the extensive development of digital coherent systems over the last decade. Space-division multiplexing is covered as well, including multimode and multicore fibers developed in just the last ten years. Finally, the book concludes with a chapter on brand-new developments in the field that are still at the development stage and likely to become highly relevant for practitioners and researchers in the coming years. Readers will also benefit from the inclusion of: A thorough introduction to the fundamentals of fiber-optic communication systems An exploration of the management of fiber-optic communication losses, dispersion, and nonlinearities A practical discussion of coherent lightwave systems, including coherent transmitters and receivers, as well as noise and bit-error rate, sensitivity degradation mechanisms, and the impact of nonlinear effects A concise treatment of space-division multiplexing, including multicore and multimode fibers, multicore lightwave systems, and multimode lightwave systems Analyses of advanced topics, including pulse shaping for higher spectral efficiency, Kramers-Kronig receivers, nonlinear Fourier transform, wavelength conversion, and optical regeneration Perfect for graduate students, professors, scientists, and professional engineers working or studying in the area of telecommunications technology, Fiber-Optic Communication Systems is an essential update to the leading reference in the area of fiber-optic communications.