Zobrazeno 1 - 10
of 147
pro vyhledávání: '"U. Cebulla"'
Autor:
R. Weinmann, Gert Laube, M. Klenk, U. Cebulla, J. Bouayad, E. Zielinski, H. Haisch, H.P. Mayer
Publikováno v:
Fiber and Integrated Optics. 13:241-245
Strained layer multiple quantum-well 1.55 μm DFB-lasers with extremely low chirp and low intermodulation distortions were made. System experiments with transmission of more than 35 analog modulated TV and Radio carriers over 32 km of standard fiber
Autor:
M. Klenk, Gert Laube, U. Cebulla, E. Zielinski, H. Haisch, J. Bouayad-Amine, R. Weinmann, P. Speier, H.P. Mayer
Publikováno v:
IEEE Journal of Quantum Electronics. 29:1782-1791
The design and realization of highly linear 1.5- mu m distributed-feedback (DFB) lasers for optical analog TV distribution systems based on dispersive single-mode fibers are reported. A simple and comprehensive model relating grating characteristics
Autor:
P. Speier, G. Laube, U. Cebulla, H.P. Mayer, J. Bouayad-Amine, E. Zielinski, H. Haisch, M. Klenk, R. Weinmann
Publikováno v:
13th IEEE International Semiconductor Laser Conference.
We have realized highly linear 1.55/spl mu/m DFB lasers with CSO as low as -67dBc, CM below -71dBc (BK450FO German TELEKOM), and low FM-response down to 70MHz/MAL by using strained-layer MQWs and an improved grating structure.
Autor:
E. Zielinski, H. Haisch, J. Weber, P. Wiedemann, R. Weinmann, E. Kuhn, E. Lach, U. Cebulla, Klaus Satzke, D. Baums, D. Kaiser
Publikováno v:
IEEE Photonics Technology Letters. 8:891-893
Electroabsorption modulators with polarization-independence of transmission (TE/TM sensitivity 23 GHz/V. Polarization insensitivity of modulator transmission and chirp is demonstrated. Technical realization has been done in ridge waveguide technology
Autor:
E. Zielinski, H. Haisch, U. Cebulla, E. Kuhn, D. Baums, R. Weinmann, Klaus Satzke, P. Wiedemann, D. Kaiser, E. Lach, J. Weber
Publikováno v:
Electronics Letters. 31:2030-2032
Electroabsorption modulators with polarisation independence of chirp and transmission (TE/TM sensitivity
Autor:
E. Zielinski, H. Haisch, U. Cebulla, R. Weinmann, P. Speier, Gert Laube, J. Bouayad, M. Klenk, H.P. Mayer
Publikováno v:
LEOS 1992 Summer Topical Meeting Digest on Broadband Analog and Digital Optoelectronics, Optical Multiple Access Networks, Integrated Optoelectronics, and Smart Pixels.
The advantages of SLMQW (strained-layer multiquantum well) lasers as compared to MQW and bulk lasers are shown. The successful application of SLMQW DFB (distributed feedback) structures to 10-Gb/s digital as well as to high-speed analog applications
Autor:
K. Dutting, Klaus Wunstel, E. Zielinski, O. Hildebrand, U. Cebulla, J. Bouayad-Amine, H.P. Mayer, Gert Laube, R. Weinmann, M. Klenk, P. Speier
Publikováno v:
Electronics Letters. 27:863-864
The successful realisation of MQW DFB-SIBH lasers for 10 Gbit/s systems applications is reported. The SIBH laser structure is completely based on an LPMOVPE growth process, including selective LPMOVPE of semi-insulating current blocking layers. Thres
Publikováno v:
Surface Science. 174:143-147
Using excitation spectroscopy we have investigated the size-induced cross-over from direct to indirect bandstructure in GaSb/AlSb quantum wells. In samples with Lz < 30 A we observe in particular the emission from the indirect and the direct energy g
Publikováno v:
Le Journal de Physique Colloques. 48:C5-159
Publikováno v:
Superlattices and Microstructures. 3:429-434
Using excitation and time-resolved spectroscopy we have investigated the size-dependent change from direct to indirect band structure in two-dimensional GaSb/AlSb structures. In the indirect regime (L z ⩽38 A) we observe L- and Λ-point transitions