• warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.

Applied Optics

Syndicate content Applied Optics
Applied Optics
Updated: 4 years 29 weeks ago

Reduction of the diffraction in strongly resonant thin-film Fabry–Perot filters between single-mode fibers

Wed, 05/22/2013 - 01:00
Jean Bittebierre
Simulations show that the cumbersome diffraction losses occurring in narrow bandpass thin-film Fabry–Perot filters (TF-FP filters) inserted between two narrow-core optical fibers are strongly reduced by introducing into the filter a pair of film materials with high refraction index contrast. ... [Appl. Opt. 52, 3645-3654 (2013)]
Categories: Optics news

Refractive index measurement by fiber point diffraction longitudinal shearing interferometry

Wed, 05/22/2013 - 01:00
Lingfeng Chen, Xiaofei Guo, Jinjian Hao
A refractive index measurement method by measuring the longitudinal displacement of a point light source (PLS) after passing through a plane-parallel-plate sample is proposed. The displacement is derived by applying two point-diffraction longitudinal shearing interferometric measurements if the ... [Appl. Opt. 52, 3655-3661 (2013)]
Categories: Optics news

Coherence scanning interferometry: linear theory of surface measurement

Wed, 05/22/2013 - 01:00
Jeremy Coupland, Rahul Mandal, Kanik Palodhi, Richard Leach
The characterization of imaging methods as three-dimensional (3D) linear filtering operations provides a useful way to compare the 3D performance of optical surface topography measuring instruments, such as coherence scanning interferometry, confocal and structured light microscopy. In this way, ... [Appl. Opt. 52, 3662-3670 (2013)]
Categories: Optics news

Design and performance of an absolute gas refractometer based on a synthetic pseudo-wavelength method

Wed, 05/22/2013 - 01:00
Jitao Zhang, Pei Huang, Yan Li, Haoyun Wei
We present a refractometer that is capable of measuring the refractive index of gases with an unambiguous range of 1.000395 and an uncertainty of 3.14×10^−8 at 633 nm. The measurement range was extended via the combination of the vacuum cells according to the proposed synthetic ... [Appl. Opt. 52, 3671-3679 (2013)]
Categories: Optics news

Hybrid optical system for three-dimensional shape acquisition

Wed, 05/22/2013 - 01:00
In Yeop Jang, Min Ki Park, Kwan H. Lee
Hybrid concepts are often used to improve existing methods in many fields. We developed a hybrid optical system that consists of multiple color cameras and one depth camera to make up the concavity problem of the visual hull construction. The heterogeneous data from the color cameras and the depth ... [Appl. Opt. 52, 3680-3688 (2013)]
Categories: Optics news

Design analysis of a fiber-bundle-based mobile free-space optical link with wavelength diversity

Wed, 05/22/2013 - 01:00
Dayong Zhou, Peter G. LoPresti, Hazem H. Refai
This paper reports on a simulation-based investigation of a wavelength diverse free-space optical link with an emphasis on identifying design choices that optimize the performance of the system under different operating scenarios. The simulation incorporates experimental data into the theoretical ... [Appl. Opt. 52, 3689-3697 (2013)]
Categories: Optics news

Photoconductive logic gate based on platinum decorated carbon nanotubes

Thu, 05/16/2013 - 01:00
C. Mercado-Zúñiga, J. R. Vargas-García, F. Cervantes-Sodi, M. Trejo-Valdez, R. Torres-Martínez, C. Torres-Torres
Electrical and nonlinear optical experiments were performed on multiwall carbon nanotubes (CNTs) prepared by a chemical vapor deposition method. We report that the incorporation of platinum particles on the CNTs surface originates an enhancement in the photoconductive properties with noticeable ... [Appl. Opt. 52, E22-E27 (2013)]
Categories: Optics news

Anisotropic hybrid organic/inorganic (azopolymer/SiO_2 NP) materials with enhanced photoinduced birefringence

Thu, 05/16/2013 - 01:00
Dimana Nazarova, Lian Nedelchev, Peter Sharlandjiev, Violeta Dragostinova
Hybrid materials based on combination of polymers and inorganic nanoparticles (NP) attracted considerable attention in the last decade due to their advantageous electrical, optical, or mechanical properties. Recently, we reported a significant improvement of the photoresponse by doping azopolymers ... [Appl. Opt. 52, E28-E33 (2013)]
Categories: Optics news

Validation of refractive index structure parameter estimation for certain infrared bands

Thu, 05/02/2013 - 01:00
Mustafa Sivaslıgil, Cemil Berin Erol, Özgür Murat Polat, Hüseyin Sarı
Variation of the atmospheric refraction index due to turbulent fluctuations is one of the key factors that affect the performance of electro-optical and infrared systems and sensors. Therefore, any prior knowledge about the degree of variation in the refractive index is critical in the success of ... [Appl. Opt. 52, 3127-3133 (2013)]
Categories: Optics news

3D phase-shifting fringe projection system on the basis of a tailored free-form mirror

Thu, 05/02/2013 - 01:00
Susanne Zwick, Stefan Heist, Ralf Steinkopf, Sandra Huber, Sylvio Krause, Christian Bräuer-Burchardt, Peter Kühmstedt, Gunther Notni
Phase-shifting fringe projection is an effective method to perform 3D shape measurements. Conventionally, fringe projection systems utilize a digital projector that images fringes into the measurement plane. The performance of such systems is limited to the visible spectral range, as most ... [Appl. Opt. 52, 3134-3146 (2013)]
Categories: Optics news

Acquisition probability analysis of ultra-wide FOV acquisition scheme in optical links under impact of atmospheric turbulence

Thu, 05/02/2013 - 01:00
Bo Tu, Lu Liu, Yihui Liu, Ye Jin, Junxiong Tang
Reliable data transmission in optical wireless communication is on the premise of the successful establishment of the optical link. In this paper, we propose an ultra-wide field-of-view (FOV) acquisition scheme, which combines the fisheye lens and Voigt anomalous dispersion optical filter (VADOF) ... [Appl. Opt. 52, 3147-3155 (2013)]
Categories: Optics news

Experimental study on the performance of a variable optical attenuator using polymer dispersed liquid crystal

Wed, 04/24/2013 - 01:00
Ghada Nabil, Wing Fat Ho, Hau Ping Chan
We applied polymer dispersed liquid crystal (PDLC) as the cladding material in a polymer-based variable optical attenuator. Three polymer inverted channel waveguides were fabricated, two with PDLC upper cladding (aligned PDLC and nonaligned PDLC) and one with aligned liquid crystal upper cladding. ... [Appl. Opt. 52, E15-E21 (2013)]
Categories: Optics news

Size dependence of harvested BaTiO_3 nanoparticles on the electro-optic and dielectric properties of ferroelectric liquid crystal nanocolloids

Mon, 04/15/2013 - 01:00
Arkadiusz Rudzki, Dean R. Evans, Gary Cook, Wolfgang Haase
The influence of the size of harvested barium titanate nanoparticles on the properties of ferroelectric liquid crystal (FLC) nanocolloids was investigated by electro-optical and dielectric methods. The spontaneous polarization and the switching time are decreased for the liquid crystalline ... [Appl. Opt. 52, E6-E14 (2013)]
Categories: Optics news

X-ray scattering of nematic liquid crystal nanodispersion with negative dielectric anisotropy

Tue, 04/09/2013 - 01:00
Alexander Lorenz, Natalie Zimmermann, Satyendra Kumar, Dean R. Evans, Gary Cook, Manuel Fernández Martínez, Heinz-S. Kitzerow
A nematic liquid crystal (LC) mixture was doped with harvested ferroelectric BaTiO_3 nanoparticles and investigated with wide- and small-angle x-ray scattering upon heating from the nematic to the isotropic phase. At moderate temperatures, colloidal crystallites were observed. LC test cells with ... [Appl. Opt. 52, E1-E5 (2013)]
Categories: Optics news

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