Thumbnail
Access Restriction
Open

Author Goda, Keisuke ♦ Tsia, Kevin K. ♦ Jalali, Bahram
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2008-07-30
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics
Subject Keyword Physics - Optics ♦ Physics - Medical Physics ♦ physics:physics
Abstract Dispersive Fourier transformation is a powerful technique in which the spectrum of an optical pulse is mapped into a time-domain waveform using chromatic dispersion. It replaces a diffraction grating and detector array with a dispersive fiber and single photodetector. This simplifies the system and, more importantly, enables fast real-time measurements. Here we describe a novel ultrafast barcode reader and displacement sensor that employs internally-amplified dispersive Fourier transformation. This technique amplifies and simultaneously maps the spectrally encoded barcode into a temporal waveform. It achieves a record acquisition speed of 25 MHz -- four orders of magnitude faster than the current state-of-the-art.
Educational Use Research
Learning Resource Type Article


Open content in new tab

   Open content in new tab