NON-RELAYED OPTICAL TRANSMISSION SYSTEM AND NON-RELAYED OPTICAL TRANSMISSION METHOD

NON-RELAYED OPTICAL TRANSMISSION SYSTEM AND NON-RELAYED OPTICAL TRANSMISSION METHOD

PROBLEM TO BE SOLVED: To obtain a non-relayed optical transmission system having a more high efficiency/economical property and a non-relayed optical transmission method. SOLUTION: The non-relayed optical transmission system has a non-relayed transmission line having pure silica core fibers 4 and di...

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Bibliographische Detailangaben
1. Verfasser: KUREBAYASHI RINTARO
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
DEVICES USING STIMULATED EMISSION
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
FREQUENCY-CHANGING
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
TRANSMISSION
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Zusammenfassung:PROBLEM TO BE SOLVED: To obtain a non-relayed optical transmission system having a more high efficiency/economical property and a non-relayed optical transmission method. SOLUTION: The non-relayed optical transmission system has a non-relayed transmission line having pure silica core fibers 4 and dispersion compensating fibers 5 to form a non-relayed transmission section 10 for propagating optical signals without relaying. In this system, the signal power of an optical signal amplified by an optical amplifier 3 at the transmit end attenuates due to the loss of the optical fibers, as it propagates in the pure silica core fibers 4 and the compensating fibers 5. The attenuated signal is amplified e.g. by a laser beam of 1.48 μm incident from behind to expand the non-relay transmission range. Using the dispersion compensating fibers in the non-relay transmission section, a long range and large capacity transmission is performed without using any relay to eliminate the need of signal amplifications, etc., at the terminal.