Title :
Quasi-Axial GRIN Lens Implemented in Wedge-Shaped Fiber Coupling With InP-Based PLC
Author :
Liu, Xu ; Sun, Xiaohan
Author_Institution :
Dept. of Electron. Eng., Southeast Univ., Nanjing, China
Abstract :
A 3-D equivalent rectangle approximation staircase concatenation method to analyze the optical mode evolution in a wedge-shaped fiber (WSF) is proposed in this paper. A scheme with an axial gradient-index (AGRIN) lens between the WSF and InP-based planar lightwave circuit (PLC) chip, yielding higher transmission efficiency than those with two cascaded lenses and one radial GRIN lenses, by 2.282 and 7.816 dB, respectively, is devised and experimentally demonstrated. The WSF-AGRIN-PLC-single-mode fiber coupling linkage supplies a preferable solution for solving the problem of index mismatching in fiber-to-InP-based PLC assembly to achieve a high-efficiency connection.
Keywords :
III-V semiconductors; gradient index optics; indium compounds; integrated optoelectronics; lenses; optical fibre couplers; 3D equivalent rectangle approximation staircase concatenation method; InP; PLC chip; WSF-AGRIN-PLC-single-mode fiber coupling linkage; axial gradient-index lens; cascaded lenses; fiber-to-PLC assembly; high-efficiency connection; index mismatching; optical mode evolution; planar lightwave circuit; quasiaxial GRIN lens; radial GRIN lenses; transmission efficiency; wedge-shaped fiber coupling; Couplings; Indexes; Lenses; Optical attenuators; Optical refraction; Optical variables control; Refractive index; Axial gradient-index (AGRIN) lenses; fiber-to-chip coupling; nanophotonics; planar lightwave circuit (PLC); wedge-shaped fiber (WSF);
Journal_Title :
Components, Packaging and Manufacturing Technology, IEEE Transactions on
DOI :
10.1109/TCPMT.2012.2207385
