Results 201 to 210 of about 28,722 (257)

Multimode Optical Fibers for Optical Neural Interfaces

2021
Although multiphoton microscopy enables optical control and monitoring of neural activity with single cells resolution over a depth of several hundreds of micrometers, the scattering nature of the brain tissue requires implantable optical neural interfaces to access subcortical structures.
Massimo, De Vittorio, Ferruccio, Pisanello   +1 more
openaire   +2 more sources

Optical switch for multimode optical-fiber systems

Optics Letters, 1979
A new type of optical switch is constructed of graded-index rod lenses. It is operated mechanically by small electromagnets. This switch is compatible with practical multimode-fiber communication systems. It has many outstanding features, such as low insertion loss (1.3–1.4 dB), low crosstalk ( 2 × 106 times), and small size (40 × 50 × 25 mm3).
M, Nunoshita, Y, Nomura, T, Matsui, T, Nakayama   +3 more
openaire   +2 more sources

Multimode Fiber-Optic Accelerometers

SPIE Proceedings, 1984
A basic system is described, using a mechanically modulated reflected signal and a reference signal generated by photoluminescence for compensation of optical intensity variations. Three sensor designs are presented, two using geometrical effects and one using interferometric modulation of the signal.
Lars Jonsson, Bertil Hok
openaire   +1 more source

Multimode optical fiber network

SPIE Proceedings, 2011
This paper presents the multimode passive optical network for LAN (Local Area Network) application. These networks should be cheaper and more usable than single-mode structures. The paper presents possibilities of commercial application of multimode passive networks.
Elzbieta Beres-Pawlik, Grzegorz Budzyn, Grzegorz Lis   +2 more
openaire   +1 more source

Multimode optical fiber sensors

1995
Of the properties of light which can be conveniently modulated, phase and polarization information are immediately lost upon entering a multimode optical fiber. This leaves intensity as the only transmittable property available for use as a modulation sensitive parameter.
G. R. Jones, R. E. Jones, R. Jones
openaire   +1 more source

Thermooptic coupler for multimode optical fibers

Applied Optics, 1985
The detailed theory is presented together with design considerations and recent experimental results for an electronically controllable directional coupler for multimode optical fibers. The device, based on plastic-clad silica fiber, is of exceptionally simple construction and compact size and is highly reliable.
N, Moll, D, Dolfi
openaire   +2 more sources

Electrowetting switch for multimode optical fibers

Optical Fiber Communication, 1982
Lightwave communications networks may require highly reliable optical switches for multimode fibers. Such switches should have low loss, low cross talk, low power consumption, and low operating voltages. Three types of switch have been proposed: mechanical: electrooptic; and liquid crystal. Mechanical switches, which operate by moving either the fibers
J L, Jackel, S, Hackwood, J J, Veselka, G, Beni   +3 more
openaire   +2 more sources

Multimode Fluoroindate Optical Fiber Coupler

2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2023
Mid-Infrared wavelengths are attracting research attention because of its implications in a plethora of applications, including optical spectroscopy, chemical sensing, thermal imaging, light sources, and comb generation [1], [2]. However, the level of technological maturity is still limited because of the absence of the essential building blocks that ...
Anelli F., Annunziato A., Portosi V., Cozic S., Poulain S., Teilleul P. L. P. D., Prudenzano F.   +6 more
openaire   +2 more sources

Multimode optical fiber photonic doppler velocimetery

Review of Scientific Instruments, 2018
A new optical fiber head for Photonic Doppler Velocimetry (PDV) made from a combination of fiber types [multimode (MM) and single-mode (SM)] and lenses is described. The input laser beam is delivered by a SM fiber and imaged onto the target by simple optics, including an imaging lens centered inside a larger lens, whose role is to collect and image the
Yossef Horovitz, Garry Berkovic, Ehud Shafir, Yair Saadi   +3 more
openaire   +2 more sources

Polymer optical circuits for multimode optical fiber systems

Applied Optics, 1980
Polymer optical waveguides for multimode optical fiber systems have been formed by the selective photopolymerization method, and their waveguiding properties have been investigated. It is shown that the polymer optical waveguides match multimode optical fiber systems, with respect to guide dimensions and index differences, and have a transmission loss ...
T, Kurokawa, N, Takato, Y, Katayama
openaire   +2 more sources