Wavelength division multiplexing systems
AssigneeCorning Incorporated
InventorsValeria L. DaSilva, Yanming Liu, Alan J. Lucero, Sergio Tsuda, Karin M. Ennser
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Abstract
A long haul, broadband DWDM system that has been optimized by the proper selection of the distribution of total dispersion compensation. Dispersion compensation is utilized at both the receiver and transmitter ends. System performance is dependent on the ratio of compensation split between the transmitter and the receiver. A system operated in the nonlinear regime can be compensated to operate with low BER and with reduced penalties due to residual dispersion effects, even when the spread of total accumulated dispersion between the extreme channels in a broadband system exceeds 1,100 ps/nm.
Claims24
A dispersion compensated optical communication system, comprising:
- a multi-channel system of lasers;
- a plurality of spans of fiber operatively connected at an input end to said laser system for receiving signals therefrom and having an output end, each of said plurality of spans of fiber having a transmitter end and a receiver end in series;
- a plurality of optical amplifiers, each disposed at an input to one of said spans of fiber;
- a pre-transmission dispersion compensator applied to said input end of said plurality of spans of fiber;
- a post-transmission dispersion compensator applied to said output end of said plurality of spans of fiber;
- the ratio of dispersion compensation provided by said pre-transmission dispersion compensator and said post-transmission dispersion compensator being pre-selected so as to provide a predetermined distribution of dispersion compensation in the system.
An optimized, dispersion compensated, Dense Wavelength Division Multiplexing (DWDM) system, comprising:
- a multi-channel system of lasers;
- means operatively connected to said lasers for multiplexing and modulating said lasers;
- multiple spans of fiber operatively connected to said lasers for receiving signals therefrom, said multiple spans of fiber each having transmitter and receiver ends;
- optical amplifiers disposed at an input to each span of said fibers;
- dispersion compensating modules applied to said transmitter and receiver ends of each of said fiber spans;
- and
- selection means associated with said dispersion compensating modules for distributing dispersion compensation, whereby said DWDM system is optimized.
An optimized, dispersion compensated, Dense Wavelength Division Multiplexing (DWDM) system, comprising:
- a laser system having at least one channel;
- means operatively connected to each laser for multiplexing and modulating each laser;
- multiple spans of fiber operatively connected to each laser for receiving signals therefrom, said multiple spans of fiber each having transmitter and receiver ends;
- optical amplifiers disposed at an input to each span of said fibers;
- a dispersion compensating module applied to each of said transmitter and receiver ends of each of said fiber systems;
- and
- selection means associated with said dispersion compensating modules for distributing dispersion compensation, whereby said DWDM system is optimized.
An optimized, dispersion compensated, Dense Wavelength Division Multiplexing (DWDM) system, comprising:
- a multi-channel system of lasers disposed upon a grid;
- means operatively connected to said lasers for facilitating multiplexing and modulation thereof;
- multiple spans of fiber operatively connected to said lasers for receiving signals therefrom, said multiple spans of fiber each having transmitter and receiver ends;
- optical amplifiers disposed at an input to each of said multiple spans of fiber;
- and
- dispersion compensating modules applied to said transmitter and receiver ends of each of said fibers.
An optimized, dispersion compensated, Dense Wavelength Division Multiplexing (DWDM) system, comprising:
- a grid system including multiple channels of lasers;
- means operatively connected to said lasers for facilitating modulation and multiplexing thereof;
- multiple spans of fiber operatively connected to said lasers for receiving signals therefrom, said multiple spans of fiber each having transmitter and receiver ends;
- optical amplifiers disposed at an input to each of said spans of fiber;
- and dispersion compensating modules applied to said transmitter and receiver ends of each fiber span.
Dependencies are inferred from the claim text.