OPTICAL COMMUNICATION SYSTEM WITH CO-PROPAGATING PUMP RADIATION FOR RAMAN AMPLIFICATION

A fiber Raman amplifier is configured to use a co-propagating Raman pum p source, which may be beneficial in a variety of system configurations (for example, in bidirectional communication systems). By carefully configuring the pump sour ce characteristics, sufficient optical gain can be achieved in...

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Hauptverfasser:	ACKERMAN, DAVID ALAN, STENTZ, ANDREW JOHN, DU, MEI, STRASSER, THOMAS ANDREW, BACHER, KENNETH L, ROTTWITT, KARSTEN, DAUTREMONT-SMITH, WILLIAM CROSSLEY, ZHANG, LIMING
Format:	Patent
Sprache:	eng ; fre
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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Beschreibung
Zusammenfassung:	A fiber Raman amplifier is configured to use a co-propagating Raman pum p source, which may be beneficial in a variety of system configurations (for example, in bidirectional communication systems). By carefully configuring the pump sour ce characteristics, sufficient optical gain can be achieved in the co-propagati ng arrangement, the characteristics including: (1) using an optical pump power of at least 50mW, (2) having a relatively large spectral bandwidth within the pump (to suppress SBS); and (3) a frequency difference between all longitudinal pump modes of each pump laser being separated by at least the walk-off frequency between the pu mp laser frequency and the signal frequency, and all intense longitudinal modes betwe en different pump lasers being separated by at least the electrical bandwidth o f the communication system.