Title :
Integrated polarization diversity front end optics
Author :
Oguchi, Taisuke ; Sugita, Akio ; Noda, Juichi
Author_Institution :
NTT Opto-Electron. Lab., Ibaraki, Japan
Abstract :
The integration of a polarization-diversity receiver front-end suitable for balanced detection has been realized by the hybrid combination of a 3-dB directional coupler and a thin-film polarization beam splitter (PBS) fabricated on silica-based waveguides. Insertion losses, excluding the intrinsic loss of the coupler, were 1 and 1.2 dB for TE- and TM-polarizations, respectively. The polarization cross talk was less than -23 dB.<>
Keywords :
directional couplers; integrated optics; optical couplers; optical losses; optical polarisers; 1 dB; 1.2 dB; SiO/sub 2/ based waveguides; balanced detection; directional coupler; hybrid combination; insertion losses; integrated polarization diversity front end optics; intrinsic loss; polarization cross talk; polarization-diversity receiver front-end; thin-film polarization beam splitter; transverse electric polarization; transverse magnetic polarizations; Integrated optics; Optical beam splitting; Optical crosstalk; Optical fiber polarization; Optical losses; Optical polarization; Optical receivers; Optical refraction; Optical waveguides; Propagation losses;
Journal_Title :
Photonics Technology Letters, IEEE
