A High Power and Low Noise Transmitter AM-VSB Transmission Using Erbium-Doped Fiber Post Amplifier,

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Abstract:

Erbium doped fiber amplifiersEDFAs with high output power and no distortion degradation are very useful for the amplitude-modulated vestigial-sidebandAM-VSB transmission systems which require a relatively high received power for a preferred carrier to noise ratioCNR and a low distortion 1 2. A field trial was conducted and feasibility of multi-distribution for trunk lines was confirmed3. We have developed an erbium doped fiber with a high conversion efficiency of 86 and a small wavelength dependence. In this paper, by using this fiber as a post amplifier, we present a high power and low noise transmitter with monitoring functions for practical use. We also show the effectiveness of long-wavelength-pass filters which have a low insertion loss and no need for wavelength tuning unlike band-pass filters.

Author(s):
Shigematsu, Masayuki ; Nishimura, Masayuki ; Okita, Toshio ; Iizuka, Kazuo
Author Organization(s):
SUMITOMO ELECTRIC INDUSTRIES LTD YOKOHAMA (JAPAN)
Supplementary Note:
This article is from 'OSA Proceedings of the Topical Meeting on Optical Amplifiers and their Applications Held in Snowmass Village, Colorado on 24-26 July 1991. Volume 13,' AD-A252 974, p214 thru p217.
Pagination:
0004

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Subject Terms
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*AMPLIFIERS, *TRANSMITTERS, AMPLITUDE, CONVERSION, DEGRADATION, DISTORTION, DISTRIBUTION, ERBIUM, FIBERS, FILTERS, FUNCTIONS, HIGH POWER, INSERTION LOSS, LONG WAVELENGTHS, LOW NOISE, MONITORING, NOISE, OUTPUT, TUNING, DIODES
Field(s)/Group(s):
Electrical and Electronic Equipment, Fiber Optics and Integrated Optics
Keyword(s):
*Fiber amplifiers, Component Reports
Report Date:
1992 May 22