Complete Characterization of an Optical Pulse Based on Temporal Interferometry Using an Unbalanced Temporal Pulse Shaping System

Wang, Chao and Yao, Jianping (2011) Complete Characterization of an Optical Pulse Based on Temporal Interferometry Using an Unbalanced Temporal Pulse Shaping System. Journal of Lightwave Technology, 29 (5). pp. 789-800. ISSN 0733-8724. (doi:https://doi.org/10.1109/JLT.2011.2106480) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1109/JLT.2011.2106480

Abstract

We propose and demonstrate a simple method for the full characterization of an ultrashort optical pulse based on temporal interferometry, using an unbalanced temporal pulse shaping (UB-TPS) system. The UB-TPS system consists of a Mach-Zehnder modulator and two dispersive elements (DEs) having opposite dispersion, but nonidentical in magnitude. The entire system can be considered as a typical balanced TPS system for a real-time Fourier transformation to generate two time-delayed replicas of the input optical pulse, followed by a residual DE to perform a second real-time Fourier transformation to convert the two time-delayed pulse replicas to two frequency-sheared optical spectra. The spectral interferometry is performed in the time domain. The spectral magnitude and phase information of the input optical pulse is accurately and unambiguously reconstructed from the recorded temporal interference pattern based on a Fourier transform algorithm. Compared with a conventional pulse characterization system based on linear interferometric measurement using an optical interferometer implemented by using discrete components, the proposed system features better stability, higher adaptability, and single-shot measurement. The use of the proposed system for the characterization of a femtosecond pulse before and after passing through a 60-m-long single-mode fiber is experimentally demonstrated.

Item Type: Article
Uncontrolled keywords: INSPEC: CONTROLLED INDEXING Fourier transform optics fibre lasers high-speed optical techniques light interference light interferometry optical modulation optical pulse generation optical pulse shaping INSPEC: NON CONTROLLED INDEXING Mach-Zehnder modulator dispersive elements femtosecond pulse frequency-sheared optical spectra linear interferometric measurement phase information real-time Fourier transformation single-mode fiber size 60 m spectral interferometry temporal interference pattern temporal interferometry time-delayed replicas ultrashort optical pulse unbalanced temporal pulse shaping AUTHOR KEYWORDS Chromatic dispersion pulse characterization real-time Fourier transform spectral interferometry suppressed-carrier (SC) modulation temporal pulse shaping
Subjects: T Technology
Divisions: Faculties > Sciences > School of Engineering and Digital Arts
Faculties > Sciences > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Tina Thompson
Date Deposited: 18 Oct 2013 14:18 UTC
Last Modified: 24 Oct 2013 11:24 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/35529 (The current URI for this page, for reference purposes)
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