Results 261 to 270 of about 13,916 (292)
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Wavelength filtering and demultiplexing devices based on ultrathin corrugated MIM waveguides
Journal of Modern Optics, 2015We have numerically investigated the transmission properties of spoof surface plasmon polaritons on the ultrathin corrugated metal–insulator–metal (MIM) waveguides with different grooves. A band-pass plasmonic filter with T-shaped grooves and a compact 4-way wavelength division demultiplexing (WDM) incorporating the filter have been proposed. The whole
Bao Jia Yang, Yong Jin Zhou
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Broadband Wavelength Filter Device using a Sidewall Grating in Multimode SOI Rib Waveguide
Optical Fiber Communication Conference, 2017A filter device with a flat-top passband of Δλ pb > 40 nm is demonstrated using multi-mode SOI waveguide with a side-wall grating. The passband is bounded by highly extinguished sidebands of Δλ sb > 10 nm.
Parimal Sah, Bijoy Krishna Das
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Filter switching device for dual-wavelength videoimaging
Journal of Fluorescence, 1996An inexpensive, dual-wavelength, videoimaging system that can be used for parallel observation of two fluorescent dyes is described. All four filters, two for excitation and two for emission, are placed on the same oscillating holder. Filters are coupled with a single dichroic mirror having two spectral windows.
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The International Journal of Advanced Manufacturing Technology, 2010
Optical alignment is of importance in spectrum inspection which is inevitable in the manufacturing process for optical filters. In the past, mechanisms with several manual axes have been used to realize such alignment, but these axes are coupled to each other.
Seung-Cheol Kim, Gyung-Bum Kim
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Optical alignment is of importance in spectrum inspection which is inevitable in the manufacturing process for optical filters. In the past, mechanisms with several manual axes have been used to realize such alignment, but these axes are coupled to each other.
Seung-Cheol Kim, Gyung-Bum Kim
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Optik - International Journal for Light and Electron Optics, 2013
a b s t r a c t Three-dimensional numerical modeling of a controlled plasmonic filtering device based on Au nanorings in an SiO2 host has been investigated. It is shown that a certain plasmon waveguide based on an ordered array of Au nanorings which utilized as a waveguide ring resonator (WRR) can be used to control the propagated optical energy and ...
Arash Ahmadivand, Saeed Golmohammadi
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a b s t r a c t Three-dimensional numerical modeling of a controlled plasmonic filtering device based on Au nanorings in an SiO2 host has been investigated. It is shown that a certain plasmon waveguide based on an ordered array of Au nanorings which utilized as a waveguide ring resonator (WRR) can be used to control the propagated optical energy and ...
Arash Ahmadivand, Saeed Golmohammadi
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Applied Physics Express, 2014
In this study, we investigated quantum dot intermixing (QDI) for InAs/InGaAlAs highly stacked QDs on an InP(311)B substrate with low-temperature annealing at 650 °C in order to realize integrated photonic devices with QDs and passive waveguides. In particular, we adopted the method of introducing point defects by ICP-RIE to realize a blue shift of the ...
Atsushi Matsumoto +6 more
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In this study, we investigated quantum dot intermixing (QDI) for InAs/InGaAlAs highly stacked QDs on an InP(311)B substrate with low-temperature annealing at 650 °C in order to realize integrated photonic devices with QDs and passive waveguides. In particular, we adopted the method of introducing point defects by ICP-RIE to realize a blue shift of the ...
Atsushi Matsumoto +6 more
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Microwave and Optical Technology Letters, 2011
AbstractA multifunctional all‐fiber device that can simultaneously serve as a multimode‐to‐single mode converter and a wavelength filter is presented in this article. The device has a concatenated structure consisting of a multimode fiber, a hollow core fiber, a single‐mode core mode blocker (made of magnetic nanoparticles), and a long period fiber ...
Yong Zhu +4 more
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AbstractA multifunctional all‐fiber device that can simultaneously serve as a multimode‐to‐single mode converter and a wavelength filter is presented in this article. The device has a concatenated structure consisting of a multimode fiber, a hollow core fiber, a single‐mode core mode blocker (made of magnetic nanoparticles), and a long period fiber ...
Yong Zhu +4 more
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Journal of Lightwave Technology, 2007
For the first time, an optimized optical add-drop filter (OADF) for dense wavelength-division-multiplexing systems is demonstrated using the Texas Instruments microelectro-mechanical-system Digital Micromirror Device (DMDtrade). This OADF features a polarization-insensitive fault-tolerant broadband operation, low loss, and the ability to selectively ...
Khan, Sajjad A., Riza, Nabeel A.
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For the first time, an optimized optical add-drop filter (OADF) for dense wavelength-division-multiplexing systems is demonstrated using the Texas Instruments microelectro-mechanical-system Digital Micromirror Device (DMDtrade). This OADF features a polarization-insensitive fault-tolerant broadband operation, low loss, and the ability to selectively ...
Khan, Sajjad A., Riza, Nabeel A.
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Optical multi/demultiplexer device, optical wavelength selective filter and method of making filter
2004Optical multi/demultiplexer (4) device comprising a substrate, a plurality of wave guides (45, 46, 47, 48) on a surface of said substrate, a plurality of selective wavelength filters (452, 462, 472, 482). Each of said plurality of filter is able to transmit a first predetermined band of wavelengths (PB') and to reflect a second predetermined band (SB').
GORNI G +3 more
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