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US 7,924,498 B2Granted
System and method for optical communication using polarization filtering
AssigneeAlphion Corporation
InventorHongsheng Wang
Life of this patent
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Abstract
An optical circuit is described which may include an SOA-MZI circuit providing an output signal; and a polarization filtering device (PFD) configured to receive the output signal of the SOA-MZI and to provide at least one signal at the output of the PFD.
Claims4
An optical communication circuit, comprising:
- an SOA-MZI circuit providing an output signal having a fast axis component and a slow axis component;
- a first polarization maintaining fiber (PMF) coupled to an output port of the SOA-MZI circuit and configured to receive the SOA-MZI output signal;
- a polarization filtering device (PFD) configured to receive the SOA-MZI output signal from the first PMF and to output at signal corresponding to the slow-axis component of the SOA-MZI output signal, thereby providing a higher extinction ratio than that of the SOA-MZI output signal.
Dependencies are inferred from the claim text.