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Polarization-independent diffractive waveplate optics
2018 IEEE Aerospace Conference, 2018Diffractive waveplates (DWs) generally diffract light in different directions for the two circular polarizations of light, and the diffraction efficiency of such devices generally falls when the angle through which light is diffracted becomes large.
D. Roberts +4 more
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Waveguide polarization-independent optical circulator
IEEE Photonics Technology Letters, 1999We fabricated a new type of waveguide polarization-independent optical circulator which does not need a polarization-beam splitter. The circulator is based on a non-reciprocal Mach-Zehnder interferometer which consists of two waveguide Faraday rotators, two thin-film half-waveplates and two planar lightwave circuit-type 3-dB couplers.
N. Sugimoto +7 more
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Angle Independent Plasmonic Circular Polarizers
2021 IEEE Photonics Conference (IPC), 2021This paper presents Plasmonic polarizers operating in the visible wavelength range, which can overcome the drawbacks of conventional circular polarizers, and have a large tolerance for different angles of incident light.
Junyan Zheng, Xin He, Xu Liu, Xiang Hao
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Polarization-Independent Phase-Sensitive Amplification
Journal of Lightwave Technology, 2016We thoroughly analyze the requirements on the signal and idler state of polarizations (SOPs) for achieving maximum amplification in phase-sensitive amplifiers (PSAs). These requirements are described using a Jones-space description as well as a Stokes-space description.
Abel Lorences-Riesgo +2 more
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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
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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
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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
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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
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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
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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
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