Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Herbert Burkhard"'
Publikováno v:
Optical and Quantum Electronics. 32:991-1004
An accurate fully vectorial wave analysis to calculate the propagation characteristics and field distribution of open dielectric waveguides and optical integrated circuits is presented. Based on the periodic repetition concept and using an equivalent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c59b87a1791c13583ed347c4dc76b8f9
https://doi.org/10.1023/a:1007099419528
https://doi.org/10.1023/a:1007099419528
Publikováno v:
Materials Science and Engineering: B. 66:111-117
In order to increase the utilizable wafer area for DFB laser production, metalorganic vapor phase epitaxy (MOVPE) under N 2 as carrier gas has been applied for the first time to strain-compensated InGaAsP multi-quantum-well (MQW) structures on InP. V
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eaf792478cc42d755f68c1cf37808bd3
https://doi.org/10.1016/s0921-5107(99)00124-5
https://doi.org/10.1016/s0921-5107(99)00124-5
Publikováno v:
Optical and Quantum Electronics. 31:893-907
A rigorous approach is presented for evaluation of reflection/transmission at the end-facets of distributed feedback (DFB) lasers. The calculations are based on a rigorous two-dimensional model to find the field distribution inside the periodic regio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0518574553e3d8240f3536012e3a28b4
https://doi.org/10.1023/a:1006942712627
https://doi.org/10.1023/a:1006942712627
Publikováno v:
Journal of Crystal Growth. 195:637-643
In order to improve the compositional homogeneity in metalorganic vapor phase epitaxy (MOVPE), growth under N 2 used as carrier gas has been applied for the first time to strain-compensated InGaAsP multi-quantum-well (MQW) structures on InP. Various
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::522dcf08273585755aeca040de81e62b
https://doi.org/10.1016/s0022-0248(98)00663-0
https://doi.org/10.1016/s0022-0248(98)00663-0
Autor:
Herbert Burkhard, K. Schatke, E. Kuphal, Dieter Bimberg, B. Kempf, R. Gobel, B. Hubner, K. Dahlhof, S. Hansmann, Alois Krost
Publikováno v:
Journal of Lightwave Technology. 15:1191-1197
The characteristics of loss-coupled distributed feedback (DFB) semiconductor laser arrays are investigated both theoretically and experimentally. Using simulations based on a transfer matrix method, the strong influence of the residual facet reflecti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2828d62346491a3c1a822aea3cc54069
https://doi.org/10.1109/50.596965
https://doi.org/10.1109/50.596965
Autor:
F. Fiedler, B. Hubner, R. Ries, E. Kuphal, E. Ronneberg, R. Zengerle, C. Greus, G. Vollrath, B. Kempf, Herbert Burkhard, R. Gobel, H. Janning
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 3:1372-1383
We have realized laser diodes with integrated spot-size transformer to achieve a high-coupling efficiency to a standard single-mode fiber (SMF) without microoptical elements. A coupling loss of about 1 dB has been achieved with tolerances of 12 /spl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9993037283973f9cf2ca97e0230eb913
https://doi.org/10.1109/2944.658791
https://doi.org/10.1109/2944.658791
Autor:
A Mattheus, H. Janning, Herbert Burkhard, S. Hansmann, F. Steinhagen, R G Gobel, Hartmut Hillmer, B Kempf, S. Mohrdiek, R. Lösch, W. Schlapp, H. Walter, H Scholl
Publikováno v:
Pure and Applied Optics: Journal of the European Optical Society Part A. 4:409-415
We have investigated the injection-locking (IL) technique as a useful tool to substantially reduce the chirp of directly modulated semiconductor lasers in standard fibre transmission systems. Chirpless transmission is presented for Fabry-Perot, bulk
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac109de04dc89715ffd38cbe73379d4e
https://doi.org/10.1088/0963-9659/4/4/018
https://doi.org/10.1088/0963-9659/4/4/018
Publikováno v:
Optical and Quantum Electronics. 26:S691-S703
The transient optical response of quantum wells (QWs) after optical and electrical carrier injection into the barrier layers is studied experimentally and theoretically. We have varied the transport geometry in GaAs/AlGaAs and InGaAs/InAlGaAs heteros
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3aeb1028b5dc49517cab39b36b0cfd2d
https://doi.org/10.1007/bf00326656
https://doi.org/10.1007/bf00326656
Publikováno v:
Journal of Lightwave Technology. 12:952-956
The modulation characteristics of DFB semiconductor lasers have been studied using a transfer matrix method combined with an appropriate rate equation analysis. The model takes into account longitudinal mode spatial hole burning, as well as the nonun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a61ed78536ba993bd1e161fb424defc2
https://doi.org/10.1109/50.296183
https://doi.org/10.1109/50.296183
Publikováno v:
IEE Proceedings - Optoelectronics. 141:8-12
Distributed-feedback lambda /4-shifted laser diodes with index coupling factor kappa as high as 300 cm-1 have been tested. The linewidths have been compared with the results of two computer models of the device including nonlinear effects. The fundam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8703383063fb9579c113c7ce92d38b7d
https://doi.org/10.1049/ip-opt:19949693
https://doi.org/10.1049/ip-opt:19949693