Ceased

Open Access Published from April 22, 2006 to December 1, 2016

Opto-Electronics Review

ISSN: 1896-3757

Editor-in-Chief: Leszek Jaroszewicz

About this journal

Starting 2017 Opto-Electronic Reviews is being published by Elsevier:
https://www.evise.com/evise/jrnl/OPELRE

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Supplementary Materials

Topics

Volume 14 (2006)

No ranking information is available for this journal.

Volume 24 Issue 4

December 2016

Research Article

October 17, 2016

Coupled electric fields in photorefractive driven liquid crystal hybrid cells – theory and numerical simulation

P. Moszczyński, A. Walczak, P. Marciniak

Page range: 163-168

Abstract

In cyclic articles previously published we described and analysed self-organized light fibres inside a liquid crystalline (LC) cell contained photosensitive polymer (PP) layer. Such asymmetric LC cell we call a hybrid LC cell. Light fibre arises along a laser beam path directed in plane of an LC cell. It means that a laser beam is parallel to photosensitive layer. We observed the asymmetric LC cell response on an external driving field polarization. Observation has been done for an AC field first. It is the reason we decided to carry out a detailed research for a DC driving field to obtain an LC cell response step by step. The properly prepared LC cell has been built with an isolating layer and garbage ions deletion. We proved by means of a physical model, as well as a numerical simulation that LC asymmetric response strongly depends on junction barriers between PP and LC layers. New parametric model for a junction barrier on PP/LC boundary has been proposed. Such model is very useful because of lack of proper conductivity and charge carriers of band structure data on LC material.

Research Article

October 17, 2016

Refractive index matched half-wave plate with a nematic liquid crystal for three-dimensional laser metrology applications

W. Piecek, L.R. Jaroszewicz, E. Miszczyk, Z. Raszewski, M. Mrukiewicz, P. Perkowski, E. Nowinowski-Kruszelnicki, J. Zieliński, M. Olifierczuk, J. Kędzierski, X.W. Sun, K. Garbat, K. Kowiorski, P. Morawiak, R. Mazur, J. Tkaczyk

Page range: 169-182

Abstract

There exists a need in a quality and accuracy of a three-dimensional laser metrology operating in numerically controlled automatic machines. For this purpose, one sends three laser beams mutually perpendicular. These three beams of the wavelength λ = 0.6328 μm are generated by the same laser and are directed along three independent, orthogonal, mutually perpendicular, optical paths with a given light polarization plain. Using these beams, constituting the frame of coordinates, three independent laser rangefinders are able to determine spatial coordinates of a working tool or a workpiece. To form these optical pulses, a special refractive index matched Half-Wave Plate with nematic Liquid Crystal (LCHWP) was applied. The presented half-wave plate is based on a single Twisted Nematic (TN) cell (with the twist angle Φ = π/2) of a rather high cell gap d ~15 μm filled with a newly developed High-Birefringence Nematic Liquid Crystal Mixture (HBLCM) of optical anisotropy as high as Δn ~0.40 at λ = 0.6328 μm, where the Mauguin limit above 5.00 ~ Δnd >> λ/2 = 0.32 is fulfilled.

Research Article

October 20, 2016

Power modulated temperature sensor with inscribed fibre Bragg gratings

M. Mądry, K. Markowski, K. Jędrzejewski, E. Bereś-Pawlik

Page range: 183-190

Abstract

The Fibre Bragg Grating (FBG) based temperature optical sensor has been designed and demonstrated. FBGs have been modelled and fabricated so as to convert the Bragg wavelength shift into the intensity domain. The main experimental setup consists of a filtering FBG and two scanning FBGs, respectively, left and right scanning FBG, whereby scanning FBGs are symmetrically located on the slopes of the filtering FBG. Such an approach allows for the modulation of power for the propagating optical signal depending on the ambient temperature at the scanning FBG location. A positive or negative change of power is determined by the spectral response of the FBG. Experimental research of the scanning FBGs’ sensitivities emphasized that the key issue is the filtering FBG. A different level of sensitivity could be achieved due to the spectral characteristic of the filtering FBG. Omitting advanced and high-cost devices, the FBG-based temperature sensor is presented. The FBG-based sensor setup could yield resolution of 1°C for the range of temperature 0.5°C to 52.5°C. The experimental study has been performed as a base for an easy-placed sensor system to monitor external parameters in real environment.

Research Article

October 22, 2016

All optical measurement of an unknown wideband microwave frequency

A. Kumar, V. Priye, R. Raj Singh

Page range: 191-195

Abstract

A novel all optical measurement scheme is proposed to measure wideband microwave frequencies up to 30 GHz. The proposed method is based on a four-wave mixing (FWM) approach in a semiconductor optical amplifier (SOA) of both even order side-bands generated by an unknown microwave frequency modulating an optical carrier. The optical power of a generated FWM signal depends on frequency spacing between extracted side-bands. A mathematical relation is established between FWM power and frequency of an unknown signal. A calibration curve is drawn based on the mathematical relation which predicts the unknown frequency from power withdrawn after FWM.

Research Article

October 17, 2016

Influence of a thin metal layer on a beam propagation in a biconical optical fibre taper

K.A. Stasiewicz, J.E. Moś

Page range: 196-208

Abstract

The paper presents results of a simulation of the plasmon effect achieved between a thin precious metal layer and a biconical optical fibre taper, manufactured on a standard single mode fibre. Gold, silver and titanium were used as a metal which fulfilled a cladding function for a small diameter structure. For simulation Mode Solution software was used on which modal and frequency analyses of a wavelength were provided in the range of 800–1700 nm. A displacement of a plasmon pick in dependence of thickness of a deposited precious layer for the highest plasmon effects was observed.

Research Article

October 14, 2016

D-shape polymer optical fibres for surface plasmon resonance sensing

K. Gasior, T. Martynkien, G. Wojcik, P. Mergo, W. Urbanczyk

Page range: 209-215

Abstract

We experimentally studied three different D-shape polymer optical fibres with an exposed core for their applications as surface plasmon resonance sensors. The first one was a conventional D-shape fibre with no microstructure while in two others the fibre core was surrounded by two rings of air holes. In one of the microstructured fibres we introduced special absorbing inclusions placed outside the microstructure to attenuate leaky modes. We compared the performance of the surface plasmon resonance sensors based on the three fibres. We showed that the fibre bending enhances the resonance in all investigated fibres. The measured sensitivity of about 610 nm/RIUfor the refractive index of glycerol solution around 1.350 is similar in all fabricated sensors. However, the spectral width of the resonance curve is significantly lower for the fibre with inclusions suppressing the leaky modes.

Research Article

October 14, 2016

Simple method for manufacturing and optical characterization of tapered optical fibres

A. Zakrzewski, A. Pięta, S. Patela

Page range: 216-222

Abstract

Photonic devices often use light delivered by a single-mode telecommunication fibre. However, as the diameter of the core of the optical fibre is of 10 microns, and the transverse dimensions of the photonic waveguides are usually micrometer or less, there is an issue of incompatibility. The problem may be solved by application of tapered optical fibres. For efficient light coupling, the taper should be prepared so as to create a beam of long focal length and small spot diameter in the focus. The article describes the design, fabrication and characterization of tapered optical fibres prepared with a fibre-optic fusion splicer. We modelled the tapers with FDTD method, for estimation of the influence of the tapered length and angle on the spot diameter and the focal length of an outgoing beam. We fabricated tapers from a standard single mode fibre by the Ericsson 995 PMfi- bre-optic fusion splicer. We planned the splicing technology so as to get the needed features of the beam. We planned a multistep fusion process, with optimized fusion current and fusion time. The experimental measurements of best tapered optical fibres were carried out by the knife-edge method.

Research Article

October 17, 2016

Thulium-doped fibre broadband source for spectral region near 2 micrometers

M. Písařík, P. Peterka, J. Aubrecht, J. Cajzl, A. Benda, D. Mareš, F. Todorov, O. Podrazký, P. Honzátko, I. Kašík

Page range: 223-231

Abstract

We demonstrated two methods of increasing the bandwidth of a broadband light source based on amplified spontaneous emission in thulium-doped fibres. Firstly, we have shown by means of a comprehensive numerical model that the full-width at half maximum of the thulium-doped fibre based broadband source can be more than doubled by using specially tailored spectral filter placed in front of the mirror in a double-pass configuration of the amplified spontaneous emission source. The broadening can be achieved with only a small expense of the output power. Secondly, we report results of the experimental thulium-doped fibre broadband source, including fibre characteristics and performance of the thulium-doped fibre in a ring laser setup. The spectrum broadening was achieved by balancing the backward amplified spontaneous emission with back-reflected forward emission.

Research Article

October 22, 2016

Contents to volume 24

Page range: 232-234

(Deutsch)

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Type: Journal
Language: English
Publisher: De Gruyter
First published: April 22, 2006
Last published: December 1, 2016
Publication Frequency: 4 Issues per Year