Open AccessOptical coding scheme using optical interconnection for high sampling rate and high resolution photonic analog-to-digital conversion
Author(s) -
Takashi Noji,
Tsuyoshi Konishi,
Kazuyoshi Itoh
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.015812
Subject(s) - binary number , photonics , computer science , interconnection , quantization (signal processing) , binary code , electronic engineering , optics , photodiode , physics , telecommunications , algorithm , mathematics , engineering , arithmetic
We propose and demonstrate an optical coding scheme using optical interconnection for a photonic analog-to-digital conversion. It allows us to convert a multi-power level signal into a multiple-bit binary code so as to detect it in a bit-parallel format by binary photodiode array. The proposed optical coding is executed after optical quantization using self-frequency shift. Optical interconnection based on a binary conversion table generates a multiple-bit binary code by appropriate allocation of a level identification signal which is provided as a result of optical quantization. Experimental results show that 8-levels analog pulses are converted into 3-bit parallel binary codes.