Results 301 to 310 of about 7,387,440 (343)

Stability Of Polarization-Independent LiNb03 Switches

SPIE Proceedings, 1989
The performance of LiNb03 waveguide devices, e.g. switches and modulators, is impaired by drift in the output light characteristics when they are subject to temperature changes or DC voltages are applied to the electrodes 1,2,3,4,5. The latter phenomenon, known as DC drift, arises from free charge carriers present in the crystal, which move in the ...
A Djupsjobacka, P Granestrand, B Lagerstrom, P Svensson, L Thylen, B Stoltz   +5 more
openaire   +1 more source

Waveguide polarization-independent optical circulator

IEEE Photonics Technology Letters, 1999
We 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, T. Shintaku, A. Tate, H. Terui, M. Shimokozono, E. Kubota, M. Ishii, Y. Inoue   +7 more
openaire   +1 more source

Polarization-independent orbital angular momentum generator based on a chiral fiber grating.

Optics Letters, 2019
A polarization-independent orbital angular momentum (OAM) generator, based on a chiral fiber grating (CFG), is proposed and demonstrated for the first time, to the best of our knowledge.
Yan Zhang, Zhiyong Bai, Cailing Fu, Shen Liu, Jian Tang, Jian Yu, C. Liao, Y. Wang, Jun He, Yiping Wang   +9 more
semanticscholar   +1 more source

Design and fabrication of a polarization-independent HCG

2013 Conference on Lasers and Electro-Optics Pacific Rim (CLEOPR), 2013
We show a design of a single layer cross stripes HCG with polarization-independent broadband reflectivity at 1.55 μm and also fabrication of the HCG on silicon-on-insulator (SOI), which demonstrates the polarization-independent reflectivity as designed.
Kazuhiro Ikeda, Kentaro Takayose, Takeo Katayama, Hitoshi Kawaguchi   +3 more
openaire   +1 more source

Polarization‐independent multiband metamaterials absorber by fundamental cavity mode of multilayer microstructure

Microwave and optical technology letters (Print), 2019
We propose a multiband metamaterial absorber consisting of silicon brick array on metal substrate in infrared range. Using the regular hexagon array of silicon bricks, the absorption rate can reach to 90% over the bandwidth of 100 nm, and four absorption
Bo Fang, Boya Li, Yandong Peng, Chenxia Li, Zhi Hong, Xufeng Jing   +5 more
semanticscholar   +1 more source

A Novel Miniaturized Polarization Independent Band-Stop Frequency Selective Surface

IEEE transactions on electromagnetic compatibility (Print), 2019
A novel miniaturized frequency selective surface (FSS) with a band-stop response at 1.6 GHz is presented in this letter. The designed FSS comprises convoluted elements connected via plated-through holes, which increases the overall electrical length. The
Sayi Soundariya Sampath, Ramprabhu Sivasamy, K. J. J. Kumar   +2 more
semanticscholar   +1 more source

Polarization-independent nonamer terahertz metamaterial

Infrared and Laser Engineering, 2017
A 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, 范 飞 Fan Fei, 白晋军 Bai Jinjun, 王湘晖 Wang Xianghui, 常胜江 Chang Shengjiang   +4 more
openaire   +1 more source

Ultra-Compact Subwavelength-Grating-Assisted Polarization-Independent Directional Coupler

IEEE Photonics Technology Letters, 2019
We propose and experimentally demonstrate an ultra-compact, low-loss polarization-independent directional coupler on the silicon-on-insulator (SOI) platform.
Heng Xie, Jiajiu Zheng, Peipeng Xu, Jianting Yao, James E. M. Whitehead, A. Majumdar   +5 more
semanticscholar   +1 more source

Polarization independent metasurface energy harvester

2016 IEEE 17th Annual Wireless and Microwave Technology Conference (WAMICON), 2016
We present a polarization independent metasurface electromagnetic energy harvester. A new metasurface harvester is composed of an ensemble of 8 × 8 electrically-small resonators arranged periodically on a Rogers substrate. The harvester is designed in such a way that the maximum power transfer occurs at 2.6 GHz. The proposed harvester has a low profile,
Mohamed El Badawe, Omar Ramahi
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), 2011
One 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