Optics Express · 2008 · 364 citations · 10 references
EngineeringElectrical EngineeringMaterials ScienceOptoelectronicsPhotonicsSemiconductor DevicesIntegrated PhotonicsOptical Communication SystemsOptical WaveguidesPhotonic Integrated CircuitsPolarization OpticsSilicon PhotonicsOptical CouplersOptical FiltersOptical SplittersPolarizationPolarization DiversityPolarization-dependent LossRing ResonatorsSilicon Waveguides
The authors designed a silicon photonic circuit with polarization diversity comprising splitters and rotators, and demonstrated its use in a polarization‑independent wavelength filter based on Si wire waveguides. The circuit uses a directional‑coupler splitter and an off‑axis double‑core rotator, both fabricated with planar technology, and incorporates these elements with a ring resonator to form the filter. The filter achieves only ~1 dB polarization‑dependent loss and supports 10‑Gbps data transmission with scrambled polarization.
We devised a silicon photonic circuit with polarization diversity that consists of polarization splitters and polarization rotators. The splitter is based on a simple directional coupler and the rotator has an off-axis double-core structure. Both devices can be made by using planar fabrication technology and require no complex proceses for the fabrication of three-dimensional structures. We fabricated a polarization-independent wavelength filter based on Si wire waveguides as an application of the polarization diversity. The filter consists of the polarization splitters, the rotators, and a ring resonator. The polarization-dependent loss of the filter is about 1 dB. A 10-Gbps data transmission with scrambled polarization is demonstrated.
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Ultrasmall polarization splitter based on silicon wire waveguides
Hiroshi Fukuda, Koji Yamada, Tai Tsuchizawa et al. · Optics Express · 2006 · 276 citations · Full text