Monolithic waveguide smart pixels for high‐contrast and high‐gain all‐optical switching

Autor:	B. Knüpfer, Peter Kiesel, H. Grothe, G. H. Döhler, Michael Kneissl, U. Hilburger
Rok vydání:	1996
Předmět:	Physics Physics and Astronomy (miscellaneous) Pixel Physics::Instrumentation and Detectors business.industry Physics::Optics Signal Franz–Keldysh effect Photodiode law.invention Optics Optical modulator law Optoelectronics business Waveguide Beam (structure) Free-space optical communication
Zdroj:	Applied Physics Letters. 69:818-820
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.117902
Popis:	We demonstrate a novel and simple smart pixel which combines free space optics for the input signal and waveguide configuration for the output beam. Our monolithic smart pixels consist of a threshold switch with high photoconductive gain and a Franz–Keldysh waveguide modulator. The switch provides sufficiently high current to control directly the output beam via the modulator. A high switching contrast of ≳17 dB and a fan‐out ≳230 at an optical output power of ≳130 μW has been achieved with our first monolithic smart pixels, which are still far from being optimized.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::edfba681774cf7aea36ebde523555fb9 https://doi.org/10.1063/1.117902 Zobrazit plný text záznamu