UNSPECIFIED (2001) Photoparametric amplifier for optical wireless communication system. In: 6th IEEE High Frequency Postgraduate Colloquium, SEP 09-10, 2001, CARDIFF UNIV, SCH ENGN, CARDIFF, WALES.

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Abstract

In this article a novel receiver based on Photoparametric Amplifier (PPA), which one of the alternative for receiver detection and amplification techniques is fully described. The PPA mode of operation involves optical detection and amplification within a single device. The amplifier operation is based on nonlinear characteristics of the photodiode and therefore, the mechanism constituting gain is highly nonlinear and different to that in conventional amplifier/mixer chain. It is able to provide selectivity and sensitivity at the same time, as required for wireless optical communications. In the proposed approach, the detector, front-end amplifier and mixer chain, are replaced by a single device, which reduced component count and therefore cost directly. Under optimum test conditions, the research group has demonstrated a power gain of 17 dB over a baseband detector (BW of 25 MHz), with improved noise performance.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering Q Science > QC Physics
Journal or Publication Title:	2001 HIGH FREQUENCY POSTGRADUATE STUDENT COLLOQUIUM
Publisher:	IEEE
ISBN:	0-7803-7118-6
Editor:	Tasker, PJ and Porch, A
Date:	2001
Number of Pages:	6
Page Range:	pp. 168-173
Publication Status:	Published
Title of Event:	6th IEEE High Frequency Postgraduate Colloquium
Location of Event:	CARDIFF UNIV, SCH ENGN, CARDIFF, WALES
Date(s) of Event:	SEP 09-10, 2001
URI:	http://wrap.warwick.ac.uk/id/eprint/10289

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