SiC multilayer add/drop filter for optical interconnects

M. Vieira, Manuela Augusto Vieira, Paula Louro, Vítor Silva, João Costa

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In this paper we demonstrate an add/drop filter based on SiC technology. Tailoring of the channel bandwidth and wavelength is experimentally demonstrated. The concept is extended to implement a 1 by 4 wavelength division multiplexer in the visible range.The add/drop filter consists of a p-i′(a-SiC:H)-n/p-i(a-Si:H)-n photodetector with two front and back optical gates. Tailoring the filter wavelength is achieved by applying a 400 nm background and changing front and back biased optical gates. Results show that, front background enhances the light-to-dark sensitivity of the long and medium wavelength channels and quench strongly the others. Back violet background has the opposite behavior; it enhances channel magnitude in short wavelength range and reduces it in the long ones. This nonlinearity provides the possibility for selective removal or addition of wavelengths. An optoeletronic model gives insight on the system physics and explains the light filtering properties of the add/drop filter.

Original languageEnglish
Title of host publicationAdvanced Interconnects for Micro- and Nanoelectronics
Subtitle of host publicationMaterials, Processes and Reliability
PublisherMRS - Materials Research Society
Number of pages6
ISBN (Print)9781632661418
Publication statusPublished - 2013
Event2013 MRS Spring Meeting - San Francisco, CA, United States
Duration: 1 Apr 20135 Apr 2013


Conference2013 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco, CA


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