Results 271 to 280 of about 88,989 (315)
Some of the next articles are maybe not open access.
Optimization of fiber to resonator coupling
Fiber Lasers and Glass Photonics: Materials through Applications II, 2020In this poster we are interested in knowing how multi-physic optimization can simulate and be helpful to find an optimal design for resonator coupling. It is based on COMSOL multi-physics software.
David Bassir, Patrice Salzenstein
openaire +1 more source
Coupling in Optical Fibers: A Review
2025 European Conference on Optical Communications (ECOC)Mode coupling is a fundamental concept to model and understand light propagation in optical fibers when they are affected by irregularities with respect to an ideal case. This paper reviews the basic principles of coupled mode theory and its main applications.
openaire +2 more sources
Coupled power equations for lossy fibers
Applied Optics, 1978Coupled power equations for multimode fibers were originally derived by neglecting mode losses, loss was later introduced by adding a phenomenological loss factor to the equation system. In this paper the time independent coupled power equations are derived taking mode losses into account from the beginning.
openaire +2 more sources
Mode Coupling in Optical Fibers
Optical Fiber Communication Conference (OFC) 2024Mode coupling plays a crucial role in spatial-division-multiplexed transmission systems. This paper review and explores new approaches to modelling and characterization of mode coupling in multicore and multimode fibers.
openaire +2 more sources
Unidirectional coupled chiral fiber grating
Optics LettersWe investigate a unidirectional coupled chiral fiber grating (UCFG) with both helical refractive index (RI) and loss modulation. The two modulations form a π/2 phase difference in the fiber cross-sectional azimuth angle, which “breaks” the mode coupled reciprocity of the forward and backward propagation.
Donghui Wang +6 more
openaire +2 more sources
Applied Physics Letters, 2004
We demonstrate that in fiber-coupled random laser, the threshold energy is twofold reduced and the slope efficiency is fivefold increased when the tip of the fiber is relocated from the surface to the depth of the powder volume. High absorption efficiency, 85%, and high conversion efficiency of population inversion to stimulated emission, 90%, make ...
Mikhail A. Noginov +2 more
openaire +1 more source
We demonstrate that in fiber-coupled random laser, the threshold energy is twofold reduced and the slope efficiency is fivefold increased when the tip of the fiber is relocated from the surface to the depth of the powder volume. High absorption efficiency, 85%, and high conversion efficiency of population inversion to stimulated emission, 90%, make ...
Mikhail A. Noginov +2 more
openaire +1 more source
2015
In modern optical communication systems, it is of the highest importance to transmit as much optical power from the transmitter to the receiver. It seems that future systems will not be that strongly dependent on good optical waveguides . Actually, even after 25 years of existence of low-loss glass fibers , the coupling efficiency remains the biggest ...
openaire +1 more source
In modern optical communication systems, it is of the highest importance to transmit as much optical power from the transmitter to the receiver. It seems that future systems will not be that strongly dependent on good optical waveguides . Actually, even after 25 years of existence of low-loss glass fibers , the coupling efficiency remains the biggest ...
openaire +1 more source
Coupling efficiency optimization of a coupled GRIN fiber lens single-mode fiber array
SPIE Proceedings, 1990Coupling efficiency optimization in a multichannel device composed by a SingleMode Fiber (51fF) array coupled to a GRIN Fiber Lens (FL) array is studied. Curves of coupling efficiency limited by diffraction in each pair GFLSMF is analyzed.
Jesus Linares +2 more
openaire +1 more source
Coupling of fiber-waveguide amplifier
SPIE Proceedings, 2005High efficient coupling between waveguide amplifier and single mode fiber is an important aspect for component integration in the optical communication. Mode matching degree between waveguide and fiber straightly affects coupling loss and actual light intensity distribution in waveguide.
Shufeng Li +4 more
openaire +1 more source
Fiber-Coupled Radiation Dosimeter
12th International Conference on Optical Fiber Sensors, 1997Fiberoptic-based, radiation measurement methods provide a convenient approach for remotely monitoring hazardous or difficult-to-access areas such as nuclear waste sites or sampling wells for in situ ground water monitoring.
Alan L. Huston, Brian L. Justus
openaire +1 more source