Results 251 to 260 of about 409,995 (301)

Low-loss semiconductor waveguide bends

Optics Letters, 1988
An experimental comparison is made between the losses of waveguide bends in disorder-delineated waveguides in semiconductor superlattices composed of GaAs and AlAs layers for simple abrupt bends and abrupt bends with an additional half-angle guiding wall proposed by Shiina et al. [Opt. Lett. 11, 736 (1986)].
P D, Swanson, F, Julien, M A, Emanuel, L, Sloan, T, Tang, T A, Detemple, J J, Coleman   +6 more
openaire   +2 more sources

Fiberoptic bend loss viscometer

LEOS 2008 - 21st Annual Meeting of the IEEE Lasers and Electro-Optics Society, 2008
This paper presents a fluid viscosity measurement using a compact fiber optic bend loss sensor. The concept of measuring viscosity is based on observing the damping characteristic of the vibration of a fiber probe.
null Cheng-Ling Changa, Alex Pereza, Wei-Chih Wang   +2 more
openaire   +1 more source

Waveguide-bend configuration with low-loss characteristics

Optics Letters, 1986
A structure that can reduce abrupt-bend losses in dielectric optical waveguides is proposed. The structure has a relatively low refractive-index region at the outside of the corner; the region operates as a phase-front accelerator of the propagating mode.
T, Shiina, K, Shiraishi, S, Kawakami
openaire   +2 more sources

Bend loss effects in diffused, buried waveguides

Applied Optics, 2005
Bend loss effects can be a significant concern in the design and performance of diffused, buried waveguide devices. Since diffused, buried waveguides typically do not have analytical mode solutions, the bend mode must be expressed as an expansion of straight waveguide modes.
James T A, Carriere, Jesse A, Frantz, Brian R, West, Seppo, Honkanen, Raymond K, Kostuk   +4 more
openaire   +2 more sources

Fast bend loss attenuator using carrier injection

Integrated Photonics Research and Applications/Nanophotonics for Information Systems, 2005
A compact InGaAsP/InP waveguide bend loss attenuator with electrically modulated bend loss is demonstrated. The carrier injection device exhibits better than 15 dB modulation and
Ng, S., Abdalla, S., Syrett, B., Barrios, Pedro, Delâge, André, Golub, I., Janz, Siegfried, McKinnon, W   +7 more
openaire   +2 more sources

Low-loss LinbO3 waveguide bends with coherent coupling

Integrated Optics and Optical Fiber Communication, 1981
Low bending losses have been achieved in single-mode Ti:LiNbO(3) channel waveguides by utilizing coherent coupling effects between closely spaced abrupt bends. A variety of multiple-bend structures has been evaluated. Losses as low as 0.08 dB per coupled 1 degrees abrupt bend have been measured, as compared with 0.8 dB per isolated 1 degrees abrupt ...
L M, Johnson, F J, Leonberger
openaire   +2 more sources

Bend loss for channel plasmon polaritons

Applied Physics Letters, 2006
Using near-field optical microscopy, the authors investigate propagation of channel plasmon polaritons excited in the wavelength range of 1425–1640nm along smoothly bent and split V-shaped grooves milled in a gold film. We find that for 0.6-μm-wide and 1.1-μm-deep grooves bent with the smallest curvature radius of ≅0.83μm, the double bend (for S bends)
Volkov, Valentyn, Bozhevolnyi, Sergey, Deveaux, E., Ebbesen, T.W.   +3 more
openaire   +2 more sources

Bending Losses in Optical Fibers

1991
A typical single- or few-mode optical fiber is a thin glass cylinder with an outer diameter of roughly 103 μ. Most of the fiber makes up what is called the cladding, but at its center is an an inner core with a diameter of roughly 10μ containing glass with optical parameters slightly different from that in the cladding [1].
Ann Kahlow Hobbs, William L. Kath, Gregory A. Kriegsmann   +2 more
openaire   +1 more source

Pressure losses in microchannels with bends

Technical Digest. MEMS 2001. 14th IEEE International Conference on Micro Electro Mechanical Systems (Cat. No.01CH37090), 2002
Bends in fluidic systems are necessary features due to design or technology constraints. Bends or curves in a duct always induce flow separation at the walls, which results in additional pressure loss. In this work, this phenomenon is investigated on a microscale.
S. Yuk Kwan Lee, M. Wong, Y. Zohar
openaire   +1 more source

Improving bending losses in holey fibers

OFC/NFOEC Technical Digest. Optical Fiber Communication Conference, 2005., 2005
Preliminary work has shown that the bending losses of large-mode-area holey fibers can be improved by modifying the hole configuration (Mortensen et al. (2003)). For the first time, we accurately quantify the advantages of this technique.
J.C. Baggett, T.M. Monro, J.R. Hayes, V. Finazzi, D.J. Richardson   +4 more
openaire   +1 more source