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Proceedings Paper

Analogue intensity modulation of high-definition television for single-mode fibre transmission
Author(s): John M. Senior; D. T. Lambert
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Paper Abstract

The principles of the transmission of high quality high definition (HDTV) signals in single- mode optical fiber systems are introduced. This is followed by a review of eight modulation systems with particular emphasis on their suitability for the transmission of wideband signals. Theoretical comparisons are drawn between the systems in terms of signal to noise ratio (SNR) performance, transmission bandwidth, receiver cost and complexity and optical source linearity requirements. Frequency modulation (FM) based systems are then proposed for practical implementations and subcarrier frequency modulation (SCFM) circuit, using a hyperabrupt varactor tuned oscillator (HTO) to achieve the required frequency deviation, is described. This system is then experimentally compared with a square wave frequency modulation (SWFM) circuit configuration in terms of receiver sensitivity and subjectively assessed picture quality. Although the SCFM system performance exhibited a slight improvement over the SWFM system the latter was not fully optimized being derived from the SCFM implementation.

Paper Details

Date Published: 4 November 1993
PDF: 9 pages
Proc. SPIE 1974, Transport Technologies for Broadband Optical Access Networks, (4 November 1993); doi: 10.1117/12.161531
Show Author Affiliations
John M. Senior, Manchester Metropolitan Univ. (United Kingdom)
D. T. Lambert, Optical Fibres (United Kingdom)

Published in SPIE Proceedings Vol. 1974:
Transport Technologies for Broadband Optical Access Networks
Robert A. Cryan; P. Nalinjai Fernando; John M. Senior; Winston I. Way, Editor(s)

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