All-Fiber Acousto-Optic Tunable Bandpass Filter

Dimmick, T.E.; Satorius, D.A.; Burdge, Geoffrey L.

doi:10.1364/ofc.2001.wj3

Cited by 10 publications

(3 citation statements)

References 4 publications

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“…A core mode blocker (CMB) is an obstacle inserted in the fibre core that prevents the propagation of light in the core, being the key element for the fabrication of bandpass filters based on LPFGs (see figure 10(a)) [84]. Typically, the CMB is achieved by exposing the fibre to a high temperature heat source, such as intense laser radiation [84][85][86] or arc discharges [87]. The latter was demonstrated by exposure of a hydrogenated B/Ge co-doped fibre to arc discharges that led to a micro-explosion in the core.…”

Section: Core Mode Blockersmentioning

confidence: 99%

“…When a CMB is inserted in between two identical concatenated LPFGs, the light that is rejected by the first grating is afterwards coupled back by the second one, the transmission spectrum of the bandpass filter being similar to the inverted spectrum of the individual gratings. Note, however, that since a fraction of the energy of a cladding mode is guided by the fibre core, the CMB leads to bandpass filters with typical insertion loss values of 1-2 dB [84][85][86][87].…”

Section: Core Mode Blockersmentioning

confidence: 99%

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Fibre optic devices produced by arc discharges

Rego

2010

J. Opt.

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We present an overview of the applications of the electric arc technique related to optical fibre technology. The use of arc discharges ranges from the well-known fibre splicing, going through the fabrication of basic devices such as fibre tapers and microspheres, to tailoring the spectra of UV-induced gratings such as in the apodization of fibre Bragg gratings and also in the fabrication of phase-shifted and sampled fibre Bragg gratings. However, in the past decade a topic more intensively investigated was probably long-period fibre gratings. Therefore, some devices based on arc-induced gratings, namely, phase-shifted and step-changed gratings and bandpass filters are discussed. We also present an electrically insulated thermocouple assembled in situ using arc discharges. This sensor is very useful in the determination of the temperature attained by the fibre during an arc discharge, this property being fundamental for the discussion of the mechanisms of formation and for the understanding of the thermal properties of arc-induced devices.

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Section: Core Mode Blockersmentioning

confidence: 99%

Section: Core Mode Blockersmentioning

confidence: 99%

Fibre optic devices produced by arc discharges

Rego

2010

J. Opt.

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“…Birks and Russell further studied AO interaction in fiber and provided basic design rule for single-stage all-fiber acousto-optical devices [56]. After that, many all-optical acousto-optical devices were proposed and AF-AOTF technology was born [57,58,59,60,61,62,63,64,65,66,67,68,69,70,71].…”

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confidence: 99%

All-fiber acousto-optical tunable filtering technology for optical communication

Li¹

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List of Figures 2.1 Schematic of all-fiber acousto-optic tunable filter operation principle. 2.2 Experimental setup of single-stage AF-AOTF 2.3 Piezoelectric transducers and horns for AF-AOTF 2.4 Acoustic transducers for AF-AOTF 2.5 Transmission of single-stage AF-AOTF 2.6 Schematic of two fiber-optic Acousto-optical devices 2.7 Schematics for several basic all-fiber acousto-optical tunable filter.. . 2.8 Second order derivatives of the transmission F with respect to a.. . 2.9 Relationship between o Q L and CL for the maximally flat stopband filter 35 2.10 The optimized value of aL for the AF-AOTFs with different isolation. 2.11 Transmission of maximal flat stopband filters with different bandwidths but same transmission isolation of-5dB 41 2.12 Transmission of maximal flat stopband filters with different transmission isolations 42 NANYANG TECHNOLOGICAL UNIVERSITY SINGAPORE ATTENTION: The Singapore Copyright Act applies to the use of this document. Nanyang Technological University Library Vlll 3.1 Composite transmission profile of a two-stage cascading structure AF-AOTF (designed at 1705nm) 62 3.2 Composite transmission profile of a two-stage cascading structure AF-AOTF (designed at 1005nm) 63 3.3 Composite transmission profile of a four-stage cascading structure AF-AOTF (designed at 1705nm) 65 3.4 Effect of strain on the performance of flat-stopband transmission.. . 66 3.5 Composite transmission profile of two-stage AF-AOTF subject to strain difference control and frequency difference control (initially designed at 1500nm) 75 3.6 Composite transmission profile of two-stage AF-AOTF subject to strain difference control and frequency difference control (initially designed at 1600n?n) 76 3.7 Composite spectral responses of a two-stage cascading AF-AOTF subject to frequency difference and strain difference control schemes with consideration of the PZT nonlinearity 81 3.8 Composite transmission profile of two-stage AF-AOTF subject to strain difference control at the calibrated wavelength (A c = 1543nm). 82 3.9 Composite transmission profile of two-stage AF-AOTF subject to strain difference control at different central wavelengths (curve 1:

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Design of tunable composite spectrums using all-fiber acoustooptical filters subject to strain control

Zhang

Chen

et al. 2006

J. Lightwave Technol.

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All-Fiber Acousto-Optic Tunable Bandpass Filter

Cited by 10 publications

References 4 publications

Fibre optic devices produced by arc discharges

Fibre optic devices produced by arc discharges

All-fiber acousto-optical tunable filtering technology for optical communication

Design of tunable composite spectrums using all-fiber acoustooptical filters subject to strain control

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