Results 171 to 180 of about 1,292,234 (234)

Semiconductor optical amplifier with polarization-insensitive gain and polarization-insensitive phase modulation

SPIE Proceedings, 2005
Apart from gain dependence on polarization state, phase modulation in semiconductor optical amplifier (SOA) is usually polarization dependent as a result of birefringence. This paper analyzes the factors that determine the polarization dependence of phase modulation and proposes the necessity of fabricating SOA with polarization-insensitive gain and ...
Lirong Huang, Dexiu Huang, Deming Liu, Xinliang Zhang   +3 more
openaire   +1 more source

Polarization-insensitive photonic microwave downconversion

Optics Letters, 2013
A polarization-insensitive photonic microwave downconverter is proposed and demonstrated, which is comprised of a polarization beam splitter, two Mach-Zehnder modulators (MZMs), and a balanced photodetector. By biasing the MZMs at the quadrature bias points with opposing modulation slopes, the performance of the proposed photonic microwave ...
Xiaowen, Gu, Shilong, Pan, Zhenzhou, Tang, Dan, Zhu, Ronghui, Guo, Yongjiu, Zhao   +5 more
openaire   +2 more sources

Analysis of a semiconductor optical amplifier with polarization-insensitive gain and polarization-insensitive phase modulation

Semiconductor Science and Technology, 2006
The polarization dependence of phase modulation in a semiconductor optical amplifier (SOA) has negative impacts on some pump/probe applications of SOAs. We propose the necessity of fabricating SOA with polarization-insensitive gain and polarization-insensitive phase modulation and study the possibility.
Lirong Huang, Dexiu Huang, Jun Chen, Deming Liu, Xinliang Zhang   +4 more
openaire   +1 more source

A Polarization-Insensitive Band-Notched Absorber for Radar Cross Section Reduction

IEEE Antennas and Wireless Propagation Letters, 2021
A polarization-insensitive broadband absorber with a notch band characteristic has been presented for radar cross section (RCS) reduction applications.
Aditi Sharma, Saptarshi Ghosh, K. V. Srivastava   +2 more
semanticscholar   +1 more source

Polarization-insensitive all-optical demultiplexing system

Proceedings of 1996 Canadian Conference on Electrical and Computer Engineering, 2002
A novel all-optical demultiplexing system which is insensitive to the state of polarization of the input signals as well as to their drift in polarization is simulated. The technique employs a modified nonlinear optical loop mirror configuration to demultiplex 50 GHz pulse train into 10 GHz. The gain of an erbium-doped fiber amplifier is varied between
Atieh, A.K., Myslinski, P., Chrostowski, J., Galko, P.   +3 more
openaire   +2 more sources

Triangular metallic ring-shaped broadband polarization-insensitive and wide-angle metamaterial absorber for visible regime.

Journal of The Optical Society of America A-optics Image Science and Vision, 2021
The inherent bandwidth limitations make it quite challenging to achieve the wideband response of metamaterial absorbers. In this paper, a metamaterial absorber based on triangular metallic rings has been proposed to attain wideband absorption (>90%) in ...
R. Bilal, M. Baqir, Musab Hameed, S. A. Naqvi, M. Ali   +4 more
semanticscholar   +1 more source

Polarization insensitive metamaterial absorber for energy harvesting

2015 27th International Conference on Microelectronics (ICM), 2015
This paper presents the design of a polarization insensitive microwave absorber based on metamaterial for electromagnetic energy harvesting. The unit cell of the metamaterial consists of eight-fold rotational symmetric electric resonator printed on FR4 substrate with a ground plane to realize both electric and magnetic resonances to achieve efficient ...
Lalj, H., Griguer, H., Benfetah, M.A., Drissi, M'Hamed   +3 more
openaire   +1 more source

Polarization insensitive laser stabilizer

SPIE Proceedings, 1994
Polarization insensitive laser stabilizer which can be used for both polarized and unpolarized beams is presented. The system utilizes a polarization independent variable attenuator which is composed of two identical polarization beamsplitting prisms and an improved Pockels cell to control the incoming laser beam intensity.
Mingshan Zhao, Guohua Li, Yaling Jing
openaire   +1 more source

A polarization-insensitive triple-band perfect metamaterial absorber incorporating ZnSe for terahertz sensing

Journal of Optics, 2022
In this work, a triple-band polarization-insensitive metamaterial structure with perfect absorption is proposed by incorporating a zinc selenide (ZnSe) spacer.
Y. Abdulkarim, F. Alkurt, M. Bakır, H. Awl, F. Muhammadsharif, M. Karaaslan, B. Appasani, K. Al-badri, Yuanyuan Zhu, Jian Dong   +9 more
semanticscholar   +1 more source

Polarization insensitive hydrophone

The Journal of the Acoustical Society of America, 1996
A hydrophone is formed of first and second optical fibers coupled together to form a fiber optic interferometric sensor for sensing an acoustic signal. The optical fibers are wrapped around a pair of concentric, thin-walled hollow cylinders. The fiber wrapped around the inner cylinder is the reference leg of the interferometer and the fiber wrapped ...
openaire   +1 more source