Polarization-maintaining performance of large effective area, higher order modes fiber in a coiled configuration

2018 ◽  
Author(s):  
Raja Ahmad ◽  
Jeffrey W. Nicholson ◽  
Kazi S. Abedin ◽  
Paul S. Westbrook ◽  
Clifford E. Headley ◽  
...  
Keyword(s):  
Effective Area ◽  
Higher Order ◽  
Higher Order Modes ◽  
Polarization Maintaining ◽  
Large Effective Area

Polarization-maintaining, large-effective-area, higher-order-mode fiber

2017 ◽  
Vol 42 (13) ◽  
pp. 2591 ◽  
Author(s):  
Raja Ahmad ◽  
Man F. Yan ◽  
Jeffrey W. Nicholson ◽  
Kazi S. Abedin ◽  
Paul S. Westbrook ◽  
...  
Keyword(s):  
Effective Area ◽  
Higher Order ◽  
Order Mode ◽  
Polarization Maintaining ◽  
Higher Order Mode ◽  
Large Effective Area

Bragg gratings in polarization-maintaining, large-area higher-order-modes fiber

2018 ◽  
Author(s):  
Raja Ahmad ◽  
Paul S. Westbrook ◽  
Kazi S. Abedin ◽  
Jeffrey W. Nicholson ◽  
Clifford Headley ◽  
...  
Keyword(s):  
Bragg Gratings ◽  
Higher Order ◽  
Large Area ◽  
Higher Order Modes ◽  
Polarization Maintaining

Ultra-large effective-area, higher-order mode fibers: a new strategy for high-power lasers

2008 ◽  
Vol 2 (6) ◽  
pp. 429-448 ◽  
Author(s):  
S. Ramachandran ◽  
J.M. Fini ◽  
M. Mermelstein ◽  
J.W. Nicholson ◽  
S. Ghalmi ◽  
...  
Keyword(s):  
High Power ◽  
Effective Area ◽  
Higher Order ◽  
Order Mode ◽  
High Power Lasers ◽  
New Strategy ◽  
Higher Order Mode ◽  
Large Effective Area

Polarization and modal analysis of a large-area, polarization-maintaining higher-order-modes fiber via a Bragg grating

2020 ◽  
Vol 45 (2) ◽  
pp. 403
Author(s):  
Raja Ahmad ◽  
Paul S. Westbrook ◽  
Kazi S. Abedin ◽  
Jeffrey W. Nicholson ◽  
Man F. Yan ◽  
...  
Keyword(s):  
Modal Analysis ◽  
Higher Order ◽  
Bragg Grating ◽  
Large Area ◽  
Higher Order Modes ◽  
Polarization Maintaining

scholarly journals Electrical characterisation of higher order spin wave modes in vortex-based magnetic tunnel junctions

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Alex. S. Jenkins ◽  
Lara San Emeterio Alvarez ◽  
Samh Memshawy ◽  
Paolo Bortolotti ◽  
Vincent Cros ◽  
...  
Keyword(s):  
Spin Wave ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Higher Order ◽  
Spin Torque ◽  
Micromagnetic Simulations ◽  
Higher Order Modes ◽  
Spin Diode ◽  
Super High Frequency ◽  
Wave Modes

AbstractNiFe-based vortex spin-torque nano-oscillators (STNO) have been shown to be rich dynamic systems which can operate as efficient frequency generators and detectors, but with a limitation in frequency determined by the gyrotropic frequency, typically sub-GHz. In this report, we present a detailed analysis of the nature of the higher order spin wave modes which exist in the Super High Frequency range (3–30 GHz). This is achieved via micromagnetic simulations and electrical characterisation in magnetic tunnel junctions, both directly via the spin-diode effect and indirectly via the measurement of the coupling with the gyrotropic critical current. The excitation mechanism and spatial profile of the modes are shown to have a complex dependence on the vortex core position. Additionally, the inter-mode coupling between the fundamental gyrotropic mode and the higher order modes is shown to reduce or enhance the effective damping depending upon the sense of propagation of the confined spin wave.

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