Tunable optical filters with wide wavelength range based on porous multilayers
نویسندگان
چکیده
منابع مشابه
Tunable optical filters with wide wavelength range based on porous multilayers
A novel concept for micromechanical tunable optical filter (TOF) with porous-silicon-based photonic crystals which provide wavelength tuning of ca. ±20% around a working wavelength at frequencies up to kilohertz is presented. The combination of fast mechanical tilting and pore-filling of the porous silicon multilayer structure increases the tunable range to more than 200 nm or provides fine adj...
متن کاملBroadly wavelength tunable bandpass filters based on long-range surface plasmon polaritons.
We report a new kind of broadly tunable optical bandpass filters based on unusual properties of long-range surface plasmon polaritons. A 0.004 variation in the refractive index of the dielectric medium translates into 210 nm of bandpass tuning at telecom wavelengths. The tuning mechanism reported here may be used to create compact and widely tunable optical systems and other plasmonic component...
متن کاملOptical Correlation with Light of Tunable Wavelength
A novel method is described for compensation of size variations in the input pattern of an optical correlator for pattern recognition by appropriate adjustment of the reconstruction wavelength. Simple ring-shaped patterns of variable diameter have been optically cross-correlated. Using a tunable dye laser of narrow bandwidth, the correlator output was analyzed for various combinations of size a...
متن کاملNear-infrared spectropolarimetry based on acousto-optical tunable filters.
A new approach to near-infrared (NIR) spectropolarimetry is described, in which the properties of a noncollinear acousto-optical tunable filter (AOTF) made of an anisotropic crystal of TeO2 is employed to produce a novel instrument that precludes or reduces significantly the use of mechanical parts and simplifies the acquisition of optical rotation spectra of absorbing species in the NIR region...
متن کاملWaveguide-Type Optical Wavelength Filters
Optical communications by dense wavelength division multiplexing (DWDM or WDM), which uses a number of wavelengths and a signal on each wavelength channel for transmission, has made massive progress as a high-speed, high-capacity optical communication system for the Internet age. A crucial device in this kind of communication system is the optical wavelength filter used to separate out the wave...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nanoscale Research Letters
سال: 2014
ISSN: 1556-276X
DOI: 10.1186/1556-276x-9-427