Zobrazeno 1 - 10
of 145
pro vyhledávání: '"C. C. Larsen"'
Autor:
J. Pelayo, P Blasco, J. Vobian, E Krause, M O Van Deventer, K Mori, R. Passy, Nicolas Gisin, R Keys, R Distl, C C Larsen, B. Perny, H.H. Gilgen
Publikováno v:
Pure and Applied Optics. Part A, Vol. 4, No 5 (1995) pp. 511-522
Two definitions and three measurement schemes for polarization mode dispersion are presented. Their relations, advantages and drawbacks are discussed. A connection with the dynamical equation for the principal polarization states is made. First resul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53e427d2863fab1d07ce5c26509228ba
https://doi.org/10.1088/0963-9659/4/5/006
https://doi.org/10.1088/0963-9659/4/5/006
Autor:
Jørn Hedegaard Povlsen, Thomas P. Rasmussen, Ole Lumholt, Svend Dahl-Petersen, Karsten Rottwitt, Anders Bjarklev, C. C. Larsen
Publikováno v:
Optics letters. 16(17)
A simple fiber-optic temperature sensor is constructed that uses the temperature dependence of microbending loss. The sensor is tested and shows high sensitivity and a strict linear scale over a wide range from 20 to 180 K. It is shown that a proper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30d200656fcec2efb1a14337416d1785
https://pubmed.ncbi.nlm.nih.gov/19776969
https://pubmed.ncbi.nlm.nih.gov/19776969
Publikováno v:
Scandinavian journal of medicinescience in sports. 17(2)
Aim: Prognosis and treatment of Achilles tendon pain (achillodynia) has been insufficiently studied. The purpose of the present study was to examine the long-term effect of eccentric exercises compared with stretching exercises on patients with achil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4502f6bf7e7fb480e942ef5d4f6d3cf5
https://pubmed.ncbi.nlm.nih.gov/17394474
https://pubmed.ncbi.nlm.nih.gov/17394474
Autor:
T. Rasmussen, S. Dahl-Petersen, Karsten Rottwitt, O. Lumholt, C. C. Larsen, Jørn Hedegaard Povlsen, Anders Bjarklev
Publikováno v:
Electronics Letters. 28:34-36
A new Er-doped fibre design for low noise amplifier applications is presented. The active fibre is continuously uptapered from the signal input end to the signal output end. Generated amplified spontaneous emission is thus reduced and high gain prope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6fa4831d012a0708c480767c86428f0
https://doi.org/10.1049/el:19920021
https://doi.org/10.1049/el:19920021
Autor:
C. C. Larsen, B. Pálsdóttir
Publikováno v:
Optical Amplifiers and Their Applications.
Interactions between excited erbium ions is believed to be the major cause of inefficiency of high concentration erbium doped fibers and planar waveguides. The energy of one excited ion is transferred to a neighboring ion which is upconverted to a hi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09aed86502db39a09a127033ab140c95
https://doi.org/10.1364/oaa.1994.thb5
https://doi.org/10.1364/oaa.1994.thb5
Autor:
T. Durhuus, C. C. Larsen, J. A. Berk, O. Frølich, B. Mikkelsen, K. Schüsler, K.E. Stubkjaer, C. F. Pedersen, C. G. Joergensen
Publikováno v:
Optical Amplifiers and Their Applications.
Optical amplifiers can efficiently be used to increase the transmission span in high-speed, long distance repeaterless communication systems [1], which are of interest, e.g., in undersea and offshore links, island jumping and trunk lines between main
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffa591db2f5a1c183abbc694b1726e39
https://doi.org/10.1364/oaa.1992.fc3
https://doi.org/10.1364/oaa.1992.fc3
Publikováno v:
Digest of Conference on Optical Fiber Communication.
As still higher gains in erbium-doped fiber amplifiere (EDFAs) are reported (see, e.g., Ref. 1 reporting a gain of 49 dB), it becomes increasingly interesting to identify the ultimate limit to the gain in EDFAs and the causes for it.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87c271da48d83277494b031348bbf5f8
https://doi.org/10.1364/ofc.1992.tul4
https://doi.org/10.1364/ofc.1992.tul4
Publikováno v:
Optical Fiber Communication.
In this investigation an accurate three-level and two-level model for the erbium-doped fiber amplifier (EDFA) is used to calculate the pump efficiency, optimizing fiber design for 0.98- and 1.48-μm pumping, respectively.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f3e1adbc8f3fa503f259d07ab229a94
https://doi.org/10.1364/ofc.1991.thm2
https://doi.org/10.1364/ofc.1991.thm2
Publikováno v:
SPIE Proceedings.
Optical absorption strengths and spontaneous transition rates are presented for Er3+ ions in Ge-doped silica glass at concentrations from 0.5x1019 cm-3 to 4.0x1019 cm-3. Results for transitions in the 480 - 1700-nm range are extracted from measure-me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3e25fddd8286b4b6c1b2cc2356674fe
https://doi.org/10.1117/12.963154
https://doi.org/10.1117/12.963154
Autor:
C. Joergensen, J. A. Van Den Berk, K.E. Stubkjaer, B. Mikkelsen, T. Durhuus, C. F. Pedersen, C. C. Larsen
Publikováno v:
Electronics Letters. 27:2153
A 2.5Gbit/s direct detection preamplifier receiver with a sensitivity of – 43dBm at 1552nm is presented. The receiver has potential use in densely spaced multichannel systems because it allows a channel spacing of 30 GHz for a penalty less than 1 d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fd8f14ee01823bf1a526f8a63f56db8
https://doi.org/10.1049/el:19911333
https://doi.org/10.1049/el:19911333