Title :
Highly Birefringent Slot-Microfiber
Author :
Kou, Jun-long ; Xu, Fei ; Lu, Yan-qing
Author_Institution :
Nat. Lab. of Solid State Microstructures, Nanjing Univ., Nanjing, China
Abstract :
We propose a possible approach to realize a highly birefringent slot microfiber by postprocessing a circular microfiber (CMF). The shape can be fabricated with very high repeatability, reliability, and accuracy. Light field can be enhanced and confined in the nanometer-wide low index slot, and the birefringence achieves as high as 4 × 10-2. The slot-microfiber has the advantages both of a microfiber and a slot waveguide. It is perfect for miniature fiberized polarization manipulation devices and its unique geometry can also greatly enhance the refractive index sensitivity (nearly ten times higher than that of CMFs) for evanescent-field-based gas sensors.
Keywords :
birefringence; light polarisation; light propagation; micro-optics; optical fabrication; optical waveguides; Highly Birefringent Slot-Microfiber; circular microfiber; evanescent-field-based gas sensors; highly birefringent slot microfiber; miniature fiberized polarization manipulation devices; refractive index; slot waveguide; Helium; Optical fiber polarization; Optical fiber sensors; Optimized production technology; Sensitivity; High birefringence; microfiber; slot waveguide;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2144578
