Park, Vaughan, Fleming & Dowler LLP
Polarization-insensitive silicon-phototonic optical receiver
Using silicon photonic components that support a single polarization, the output of an optical receiver is independent of the polarization of an optical signal. In particular, using a polarization-diversity technique, the two orthogonal polarizations in a single-mode optical fiber are split in two and processed independently. For example, the two optical signals are provided by a polarizing splitting grating coupler.Subsequently, a wavelength channel in the two optical signals is selected using a wavelength-selective filter (for example, using a ring resonator or an echelle grating) and combined at an optical detector (such as a photo-detector) to achieve polarization-independent operation.
ORACLE INTERNATIONAL CORPORATION
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Guoliang Ashok V. Ying L. Xuezhe
Li Krishnamoorthy Luo Zheng