Acousto-optic Tunable Switch for WDM Applications
نویسندگان
چکیده
polarization diversity AOTF in the passive, or bar, state, and (d) in the active, or cross, state. Abstract: An acousto-optic tunable switch (AOTS) can provide highly selective wavelength switching and wavelength routing in optical DWDM systems. This paper presents the basic concept of AOTS and a simple analysis of the phase mismatch and wavelength deviation in WDM systems using acousto-optic tunable filters (AOTF). Numerical results for phase mismatch and wavelength deviation have also been presented.
منابع مشابه
Acousto-Optic Tunable Filters Spectrally Modulate Light
The development of opt electronic technology in the past two decades has intensified research on devices that control and manipulate optical radiation. Acousto-optic devices are based on acousto-optic effects in which the optical medium is altered by the presence of ultrasound. Examples of acousto-optic devices include optical modulators, deflectors, scanners, Q-switches, isolators, and frequen...
متن کاملRecognition of Wavelength-multiplexed Labels with Acoustooptic Waveguide Circuit for Hierarchical Photonic Routing
High-speed optical processing for packet routing can overcome bottleneck in largecapacity photonic networks. We have studied on collinear acousto-optic (AO) switches and applications to optical label recognition. Since parallel combination of collinear AO switches can handle wavelength-division-multiplexed (WDM) optical pulses, recognition for optical labels encoded in spectral and time domains...
متن کاملAcousto-Optic Tunable Filters for Imaging Applications in the 2 4 μm with Low RF Drive Power
in the 2 4 μm with Low RF Drive Power S. Valle, J.D. Ward, C. Pannell, N.P. Johnson Gooch and Housego (UK) Ltd, Dowlish Ford, Ilminster, Somerset, TA19 0PF, UK Optoelectronics Group, School of Engineering, University of Glasgow, Glasgow G12 8LT, UK Gooch and Housego (Orlando), 4632 36th street, Orlando, Fl 32811, USA The λ dependence on acoustic eld intensity (and hence RF drive power) can rend...
متن کاملBragg grating-based fibre optic sensors in structural health monitoring.
This work first considers a review of the dominant current methods for fibre Bragg grating wavelength interrogation. These methods include WDM interferometry, tunable filter (both Fabry-Perot and acousto-optic) demultiplexing, CCD/prism technique and a newer hybrid method utilizing Fabry-Perot and interferometric techniques. Two applications using these techniques are described: hull loads moni...
متن کاملPolarization-coupling all-fiber acousto-optic tunable filter insensitive to fiber bend and physical contact.
We show that an all-fiber acousto-optic tunable filter based on polarization mode coupling using torsional acoustic wave is immune to the fiber bend and physical contact in the acousto-optic interaction region. We also propose and demonstrate a novel strain-free and size-reduced tunable filter with a 4-m-long fiber acousto-optic interaction region looped into a 5- cm-diameter coil.
متن کامل