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

Volume

2

Issue

9

fYear

2012

Firstpage

1420

Lastpage

1425

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);

fLanguage

English

Journal_Title

Components, Packaging and Manufacturing Technology, IEEE Transactions on

Publisher

ieee

ISSN

2156-3950

Type

jour

DOI

10.1109/TCPMT.2012.2207385

Filename

6269069