Interferometric Analog-to-Digital Conversion Scheme
Artikel i vetenskaplig tidskrift, 2005

A novel interferometric analog-to-digital converter (ADC) scheme for real-time conversion at multiple-gigahertz bandwidth is presented and theoretically analyzed. The input analog signal is applied as an optical phase modulation in one of the arms of a Mach-Zehnder interferometer and the digital output is obtained in encoded form as a set of optical intensities in the interference pattern. Particular benefits of the proposed device are its simple design which facilitates integration, the extremely high bandwidth, and the inherent $2pi $-periodicity that in comparison with conventional flash ADCs relaxes the demands on the comparators and allows unwrapping of the output for higher resolution.

photonic sampling

photonic analog-to-digital converter (ADC)

error correction coding

optical interferometry

electrooptical modulation

Analog–digital conversionm

phase modulation

Författare

Johan Stigwall

Chalmers, Mikroteknologi och nanovetenskap, Fotonik

Sheila Galt

Chalmers, Mikroteknologi och nanovetenskap, Fotonik

Publicerad i

IEEE Photonics Technology Letters

Vol. 17 Nummer/häfte 2 s. 468 - 470

Kategorisering

Ämneskategorier (SSIF 2011)

Fysik

Elektroteknik och elektronik

Identifikatorer

Mer information

Skapat

2017-10-06