SiC pinpin photonic filters for linking the visible spectrum to the telecom gap

Vieira, Manuela; Louro, Paula; Fantoni, Alessandro; Silva, V.

doi:10.1016/j.mee.2014.06.033

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…Under back irradiation due to the different enhancement of the violet and blue optical gains, if only three channels are present the blue channel is selected otherwise the violet will be tuned. This nonlinearity provides the possibility for selective tuning the different wavelengths allowing their recognition [8,9]. In Fig.…”

Section: Multiplexed Signalmentioning

confidence: 99%

VIS/NIR wavelength selector based on a multilayer pi'n/pin a‐SiC:H optical filter

Vieira

Silva

Louro

et al. 2015

Phys. Status Solidi C

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In this paper, we present a tandem visible/nearinfrared (VIS/NIR) wavelength selector based on a multilayer a‐SiC:H optical filter that requires appropriate near‐ultraviolet steady states optical switches to select the desired wavelengths in the VIS/NIR ranges. Spectral response measurements are presented and show the feasibility of tailoring the wavelength and bandwidth of a polychromatic mixture of different wavelengths. The selector filter is realized by using a two terminal double pi'n/pin a‐SiC:H photodetector. Five visible/infrared communication channels are transmitted together, each one with a specific bit sequence. The combined optical signal is analysed by reading out the photocurrent, under near‐UV steady state background. Results show that the background side and intensity works as a selector in the infrared/visible regions, shifting the sensor sensitivity. This nonlinearity allows the identification and decoding of the different input channels in the visible/infrared ranges. This concept is extended to implement a 1 by 5 wavelength division multiplexer with channel separation in the VIS/NIR range and a transmission capability of 30 Kbps. The relationship between the optical inputs and the output signal is established and an algorithm to decode the Multiplexed (MUX) signal presented. An optoeletronic model gives insight on the system physics. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Section: Multiplexed Signalmentioning

confidence: 99%