Results 251 to 260 of about 166,720 (284)
Some of the next articles are maybe not open access.
Polarization-independent beam splitter
Review of Scientific Instruments, 1983We report a new type of beam splitter capable of producing a division of light in a polarization-independent manner. Most off-axis beam splitters have a pronounced polarization dependence. An experimental device with a splitting ratio of about 7 dB varied less than ±0.1 dB as a function of incident linear polarization.
openaire +1 more source
Polarization-Independent Optical Injection Locking
Optical Fiber Communication Conference, 2017A pluggable system making optical injection locking independent of the incoming signal's polarization-state is proposed and experimentally verified to maintain stable locking for random polarizations without performance loss in carrier recovery for coherent optical communications.
Jokhakar Jignesh +2 more
openaire +1 more source
Broadband and polarization-independent waveguide-fiber coupling
Silicon Photonics XVIII, 2023Waveguide-to-fiber coupling is one of the key challenges in silicon photonics. Many approaches have already been experimentally demonstrated, such as grating couplers, inverse tapers, sub-wavelength structures, lensed fibers, photonic wire bonds, small-core fibers and separate waveguide interposers.
Hassinen, Tomi +6 more
openaire +2 more sources
Polarization-independent all-optical switching
IEEE Photonics Technology Letters, 1992A polarization-independent all-optical switch has been demonstrated based on a nonlinear fiber Sagnac interferometer. The control signal is split and recombined with a time delay, producing two linearly polarized pulses that lie within the temporal switching window of the circuit.
N.A. Whitaker +3 more
openaire +1 more source
Polarization-independent switches on LiNbO3
Integrated Photonics Research, 1990The basic structure of the noninterferometric switch (Fig. 1) is built in three sections: two passive polarization splitters and a mode-converter section.1If no voltage is applied to the mode converter electrodes, arbitrarily polarized light incident in one of the two input arms will exit one arm.
T. Pohlmann, A. Neyer, E. Voges
openaire +1 more source
Polarization-independent nonamer terahertz metamaterial
Infrared and Laser Engineering, 2017A nonamer metamaterial composed of nine split ring resonators with different orientations was experimentally and numerically researched in terahertz band. The nine split rings were arranged spirally. From the first split ring, the subsequent split rings were rotated anti-clockwise by 40.
刘 岩 Liu Yan +4 more
openaire +1 more source
Negative-index Polarization-independent Metamaterial
CLEO: 2015, 2015We introduce a polarization-independent left-handed metamaterial, and describe its electromagnetic properties using numerical techniques. Conventional mirrored S-shaped resonators are shown to exhibit a negative refractive index; and in this work a crossed design based on these resonators is demonstrated as a polarization insensitive metamaterial with ...
Morteza Karami +3 more
openaire +1 more source
Polarization independent coherent optical receiver
Journal of Lightwave Technology, 1987This paper describes an optical heterodyne receiver for DPSK signals which can receive an optical signal having an arbitrary polarization state. This is achieved by splitting the received signal between two orthogonal polarization axes and processing the resulting two signals as in a conventional DPSK heterodyne receiver. The sum of the two demodulated
openaire +1 more source
Polarization-independent broadband terahertz modulator
2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC), 2011One of the major limitations of the existing single-pixel terahertz imaging systems is the lack of high speed broadband multi-pixel beam modulators with large modulation depths. So far there has been few works to demonstrate broadband terahertz multi-pixel beam modulators.
openaire +1 more source
Polarization independent varifocal lens using KTN crystals
Optics Letters, 2013We fabricated a polarization-independent varifocal lens using KTa(1-x)Nb(x)O3 (KTN) crystals. The polarization dependence of the KTN crystal is effectively compensated for by combining a pair of KTN lenses and a half-wave plate. This compensation is achieved by a total electro-optic effect, which consists of the Kerr effect and the elasto-optic effects
Takahiro, Inagaki +3 more
openaire +2 more sources