Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Nakita Vodjdani"'
Publikováno v:
Journal of Nonlinear Optical Physics & Materials. :645-651
We propose using the huge birefringence available in GaAs/AlAs oxidized waveguides to phase-match nonlinear optical conversions in the near- and mid-infrared. Tunable midinfrared radiation can be obtained by difference frequency generation from two t
Autor:
Nakita Vodjdani, Olivier Parillaud, J. Harari, A. Marceaux, V. Magnin, Nicolas Michel, D. Decoster
Publikováno v:
IEE Proceedings. Optolectronics
IEE Proceedings. Optolectronics, 2006, 153, pp.199-204
IEE Proceedings. Optolectronics, 2006, 153, pp.199-204
Evanescently-coupled photodiodes were realised for high-power operation at a wavelength of 1.55 µm and wide-band operation beyond 30 GHz. Evanescent coupling allows for uniform carrier generation, which avoids electrical breakdown at the beginning o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0900e751a2e48341f15748255d273117
https://hal.archives-ouvertes.fr/hal-00138748
https://hal.archives-ouvertes.fr/hal-00138748
Autor:
E. Estebe, Pablo Sanchis, G. Grosskopf, A. Enard, Juan L. Corral, J.-L. Valard, Olivier Parillaud, Valentin Polo, J.H. den Besten, MK Meint Smit, José Manuel Guaita Martínez, Miguel A. Piqueras, Francisco M. Soares, J. Lopez, Javier Herrera, Javier Martí, J. Galiere, Borja Vidal, A. Marceaux, Moon-Soon Choi, Nakita Vodjdani
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques, 54(2), 887-899. Institute of Electrical and Electronics Engineers
In this paper, a 3-bit optical beamforming architecture based in 2/spl times/2 optical switches and dispersive media is proposed and demonstrated. The performance of this photonic beamformer is experimentally demonstrated at 42.7 GHz in both transmis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95121fc0b377d623f7924ed616d26423
https://research.tue.nl/nl/publications/2ec1afb5-1213-4ed8-8ed1-b041e6b366d5
https://research.tue.nl/nl/publications/2ec1afb5-1213-4ed8-8ed1-b041e6b366d5
Publikováno v:
SPIE Proceedings.
The optical waveguide entry facet of high-speed, 40 GHz waveguide photodetectors is usually obtained by manual cleaving, which has limited accuracy (± 10 μm) and reduces fabrication yields. In our new fabrication process, the waveguide facet is obt
Publikováno v:
Applied Physics Letters. 68:1904-1906
A reverse biased Schottky diode is used to deplete the population in quantum wells and to modulate the intersubband absorption coefficient. This middle infrared electro‐optic modulator works at room temperature. A waveguide geometry is demonstrated
Autor:
Nakita Vodjdani, Vincent Berger, N. Laurent, Andrea Fiore, Emmanuel Rosencher, S Theilmann, J. Nagle
Publikováno v:
Applied Physics Letters, 68(10), 1320-1322. American Institute of Physics
Selective wet oxidn. of AlAs was used to obtain huge birefringence in GaAs/AlAs optical waveguides. A single polarization waveguide was obtained by oxidizing an AlAs layer buried in a GaAs guiding layer. The TM mode is below cutoff due to the high in
Autor:
Reynald Boula-Picard, Jacqueline Lehoux, Jean Pierre Ghesquiers, A. Enard, Corrine Dernazaretian, Julien Galiere, Olivier Parillaud, Jerome Lopez, Eric Estebe, Jean Luc Valard, Nakita Vodjdani, A. Marceaux
Publikováno v:
Integrated Optical Devices, Nanostructures, and Displays.
This paper presents recent developments in the packaging of 40GHz receivers for radio over fiber applications. First, we present a hybrid 40GHz photoreceiver module. It integrates 40GHz waveguide photodiode technology and narrow band MMIC amplifier.
Autor:
J. Lopez, MK Meint Smit, A. Enard, F Fouad Karouta, J.J.M. Binsma, Francisco M. Soares, E. Smalbrugge, Nakita Vodjdani
Publikováno v:
Integrated Photonics Research (IPR'04) conference, IFB2-1/3
STARTPAGE=IFB2;ENDPAGE=1/3;TITLE=Integrated Photonics Research (IPR'04) conference
STARTPAGE=IFB2;ENDPAGE=1/3;TITLE=Integrated Photonics Research (IPR'04) conference
An InP-based integrated beamformer for beamsteering of a four-element Phased-Array Antenna has been designed, fabricated and characterized. This beamformer consists of an AWG, 14 high-speed MZI switches, and 9delaylines integrated on a single compact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76b6a946d6728197f8c2bb143b5d67d5
https://research.tue.nl/nl/publications/db1fe1c9-472d-44f3-b2ee-b661e0d340ff
https://research.tue.nl/nl/publications/db1fe1c9-472d-44f3-b2ee-b661e0d340ff
Publikováno v:
Applied Physics Letters. 62:1907-1909
We present an experimental study of the intersubband electroabsorption and electrorefraction of a coupled asymmetrical quantum well structure. The field induced carrier transfer from a wide well to a narrow well yields interesting electro‐optical p
Publikováno v:
Applied Physics Letters. 62:378-380
We present a new type of quantum well infrared photodetector. The structure is not doped and the electrons necessary for the photodetection are optically injected by interband absorption. The functioning of the photodetector is then completely contro