Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Seppo Nissilae"'
Publikováno v:
Coherence Domain Optical Methods in Biomedical Science and Clinical Applications V.
In this study, a noninvasive laser Doppler measurement method based on the self-mixing effect of a diode laser was used to measure baroreflex regulation, which is manifest in the blood pressure signal as a 0.1 Hz sinusoidal variation. The laser Doppl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::338ac8d1c8a13bddbef5fca98e73f304
https://doi.org/10.1117/12.427901
https://doi.org/10.1117/12.427901
Publikováno v:
Sol-Gel Optics V.
Organic polythiophene polymers are known to be good electrical conductors, however they are lacking of chemical and mechanical stability. In this paper we describe a synthesis of polyethylene dioxythiophene-polystyrene sulfonate (PEDT-PSS) doped sol-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bb39679fa927ce1717d9142d69bfddb
https://doi.org/10.1117/12.384346
https://doi.org/10.1117/12.384346
Publikováno v:
SPIE Proceedings.
The photoacoustic technique (laser-induced acoustic waves), which is less affected by light scattering than the optical method, is based on optical absorption and the heat properties of illuminated media. Although photoacoustic techniques have been u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc52096e46d0a7926850a65aab8399ac
https://doi.org/10.1117/12.364413
https://doi.org/10.1117/12.364413
Autor:
Mikko Heikkinen, Harri Kopola, Pentti Karioja, Riku Pennala, Seppo Nissilae, Risto A. Myllylae, Heikki Suni, Veijo Lyöri, Pekka Suopajaervi
Publikováno v:
SPIE Proceedings.
A novel fiber optic sensors for traffic monitoring applications are presented. They are useful for monitoring the traffic entering and leaving guarded areas, counting traffic on public roads as well as in determining lane occupancy at traffic lights.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac254b5d4cce0a0c6cd3b14808c208b1
https://doi.org/10.1117/12.310611
https://doi.org/10.1117/12.310611
Publikováno v:
Biomedical Systems and Technologies II.
The so-called photoacoustic technique combines optical properties, such as absorption and scattering, with acoustic properties, such as sound velocity and absorption, to monitor and measure the physical properties of materials. This paper comprises a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d012b6193b4ea373e007c9d29e9986ce
https://doi.org/10.1117/12.301101
https://doi.org/10.1117/12.301101
Publikováno v:
SPIE Proceedings.
The monitoring of fuel tanks and toxic liquid containers with embedded long optical fibers makes it possible to determine their condition and to detect probable environmental risks. We present here measurements of microbending loss in long, single-mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb4c10fdee072b72b34d461f994d4baa
https://doi.org/10.1117/12.221104
https://doi.org/10.1117/12.221104
Publikováno v:
Optoelectronic and Electronic Sensors.
Distributed fiber-optic sensing which implies monitoring of the magnitude of physical parameters and their variations along the length of continuous uninterrupted optical fiber is considered. OTDR technique and measurement results for various kinds o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14773b1ec40bc692608fb0625f122fa0
https://doi.org/10.1117/12.213167
https://doi.org/10.1117/12.213167
Publikováno v:
SPIE Proceedings.
In this study distributed fiber optic sensors using commercial telecommunication and special sensor fibers have been studied and tested. A PC-compatible OTDR-card is used to obtain a portable measuring system. Especially the measuring of strain and s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5326933b0743f40c1234f17bf31db71
https://doi.org/10.1117/12.166875
https://doi.org/10.1117/12.166875
Autor:
Juha Kostamovaara, Seppo Nissilae
Publikováno v:
SPIE Proceedings.
Active fibers, i.e. optically pumped doped fibers, have been developed and studied intensively during the last few years, and an optical amplifier based mainly on erbium-doped fibers has just been launched on the expanding telecommunications market.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ed103fd7808cd3542a977aeeedc93d8
https://doi.org/10.1117/12.145555
https://doi.org/10.1117/12.145555
Publikováno v:
Fiber Optic Sensors IV.
The problems associated with the fibres used in pulsed time-of-flight rangefinders were studied, and particularly errors due to the transit time disturbances of step and graded index fibres as a function of fibre length, input numerical aperture and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13eb7375ed13e57f3aa384ea2ee02ef3
https://doi.org/10.1117/12.20291
https://doi.org/10.1117/12.20291