Digital dispersion compensation module

摘要

Embodiments of present invention provide a digital dispersion compensation module. The digital dispersion compensation module includes a multi-port optical circulator; and a plurality of dispersion compensation units connected to the multi-port optical circulator, wherein at least one of the plurality of dispersion compensation units includes a fiber-bragg grating (FBG) having a first port and a second port; and an optical switch being capable of selectively connecting to one of the first port and the second port of the FBG, wherein the at least one of the plurality of dispersion compensation units is adapted to provide a positive dispersion to an optical signal, from the multi-port optical circulator, when the optical switch connects to the first port of the FBG and is adapted to provide a negative dispersion to the optical signal when the optical switch connects to the second port of the FBG.

主权项

1. A digital dispersion compensation module (DDCM) comprising:
a multi-port optical circulator; and a plurality of dispersion compensation units connected to said multi-port optical circulator, wherein at least one of said plurality of dispersion compensation units comprises:
a fiber-bragg grating (FBG) having a first port and a second port; andan optical switch being capable of selectively connecting to one of said first port and said second port of said FBG,wherein said at least one of said plurality of dispersion compensation units is adapted to provide a positive dispersion to an optical signal, from said multi-port optical circulator, when said optical switch connects to said first port of said FBG and is adapted to provide a negative dispersion to said optical signal when said optical switch connects to said second port of said FBG,wherein each of said plurality of dispersion compensation units is configurable to selectively provide a positive dispersion or a negative dispersion to said optical signal, with value of said negative dispersion being same as value of said positive dispersion, andwherein value of said dispersion provided by each one of said plurality of dispersion compensation units is different from value of said dispersion provided by each another one of said plurality of dispersion compensation units.