Zobrazeno 1 - 10
of 401
pro vyhledávání: '"B. Nebendahl"'
Autor:
D. Hillerkuss, T. Schellinger, M. Jordan, C. Weimann, F. Parmigiani, B. Resan, K. Weingarten, S. Ben-Ezra, B. Nebendahl, C. Koos, W. Freude, J. Leuthold
Publikováno v:
IEEE Photonics Journal, Vol 5, Iss 5, Pp 7201011-7201011 (2013)
This paper introduces a spectral slicing technique that extends the useful spectral range of frequency combs generated through self-phase modulation (SPM) of mode-locked laser pulses. When generating frequency combs by SPM, the spectral range with hi
Externí odkaz:
https://doaj.org/article/376c266939e948c4a50cf6310516ba83
Autor:
P C, Schindler, R, Schmogrow, S, Wolf, B, Baeuerle, B, Nebendahl, C, Koos, W, Freude, J, Leuthold
Publikováno v:
Optics express. 22(9)
We demonstrate full flex-grid operation with Nyquist frequency division multiplexing. The technique supports high spectral efficiency, asynchronous operation of channels, variable channel loading with different modulation formats and dynamic bandwidt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::30308c7bd6205fac6141fe728affd983
https://pubmed.ncbi.nlm.nih.gov/24921791
https://pubmed.ncbi.nlm.nih.gov/24921791
Publikováno v:
Optics express. 22(8)
Efficient algorithms for timing, carrier frequency and phase recovery of Nyquist and OFDM signals are introduced and experimentally verified. The algorithms exploit the statistical properties of the received signals to efficiently derive the optimum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::6aac969119d3c1a6a208d3e9963f0543
https://pubmed.ncbi.nlm.nih.gov/24787823
https://pubmed.ncbi.nlm.nih.gov/24787823
Autor:
R, Schmogrow, M, Meyer, P C, Schindler, B, Nebendahl, M, Dreschmann, J, Meyer, A, Josten, D, Hillerkuss, S, Ben-Ezra, J, Becker, C, Koos, W, Freude, J, Leuthold
Publikováno v:
Optics express. 22(1)
We demonstrate two efficient processing techniques for Nyquist signals, namely computation of signals using dynamic precision as well as arbitrary rational oversampling factors. With these techniques along with massively parallel processing it become
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::f60ca13aa448e1ba1230216bcdae7261
https://pubmed.ncbi.nlm.nih.gov/24514981
https://pubmed.ncbi.nlm.nih.gov/24514981
Autor:
B. Nebendahl, W. Freude, C. Koos, J. Leuthold, M. Huebner, R. Schmogrow, A. Josten, D. Hillerkuss, S. Koenig, M. Winter, J. Meyer, M. Dreschmann
Publikováno v:
2013 Saudi International Electronics, Communications and Photonics Conference.
The quality of optical signals is a very important parameter in optical communications. Several metrics are in common use, like optical signal-to-noise power ratio (OSNR), Q-factor, error vector magnitude (EVM) and bit error ratio (BER). A measured r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1224ce497115455ea4855c092c1b39b6
https://doi.org/10.1109/siecpc.2013.6551002
https://doi.org/10.1109/siecpc.2013.6551002
Autor:
R, Schmogrow, D, Hillerkuss, S, Wolf, B, Bäuerle, M, Winter, P, Kleinow, B, Nebendahl, T, Dippon, P C, Schindler, C, Koos, W, Freude, J, Leuthold
Publikováno v:
Optics express. 20(6)
We demonstrate for the first time transmission of 54 Gbit/s and 48 Gbit/s over 44 km and 150 km, respectively, utilizing an optical bandwidth of only 3 GHz. We used polarization division multiplexed 512QAM and 256QAM modulation formats in combination
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::73a13f623124721c6ae1e05ea9db9499
https://pubmed.ncbi.nlm.nih.gov/22418526
https://pubmed.ncbi.nlm.nih.gov/22418526
Autor:
R, Schmogrow, M, Winter, M, Meyer, D, Hillerkuss, S, Wolf, B, Baeuerle, A, Ludwig, B, Nebendahl, S, Ben-Ezra, J, Meyer, M, Dreschmann, M, Huebner, J, Becker, C, Koos, W, Freude, J, Leuthold
Publikováno v:
Optics express. 20(1)
Nyquist sinc-pulse shaping provides spectral efficiencies close to the theoretical limit. In this paper we discuss the analogy to optical orthogonal frequency division multiplexing and compare both techniques with respect to spectral efficiency and p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::7eb5f6a4d77db8502ad57516a34e69df
https://pubmed.ncbi.nlm.nih.gov/22274355
https://pubmed.ncbi.nlm.nih.gov/22274355
Publikováno v:
Physica C: Superconductivity. 219:233-240
It is shown that the shape of the field-modulated microwave-absorption signal in the mixed state of type-II superconductors reveals the field dependence of the flux-pinning parameters. Experimental data are presented for thin films of YBa 2 Cu 3 O 7
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf949657c5aa885a69e106fa50d9ca15
https://doi.org/10.1016/0921-4534(94)90040-x
https://doi.org/10.1016/0921-4534(94)90040-x
Publikováno v:
Physica C: Superconductivity. 209:362-368
A quantitative analysis of the temperature dependence of modulated microwave absorption measurements in a sputtered film, a single crystal and a ceramic sample reveals two different types of intrinsic Josephson contacts. By modelling the complete tem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa886021e462ef7cec6d53234fd999ff
https://doi.org/10.1016/0921-4534(93)90546-3
https://doi.org/10.1016/0921-4534(93)90546-3
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