Title :
Widely Wavelength-Tunable Mode Converter Based on Polymer Waveguide Grating
Author :
Yu Yang ; Kaixin Chen ; Wei Jin ; Kin Seng Chiang
Author_Institution :
Key Lab. of Opt. Fiber Sensing & Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
We design and fabricate a corrugated grating on a polymer waveguide for the realization of the conversion between the fundamental mode and the higher order mode. The transmission characteristics of the device are insensitive to the polarization state of the input light. Our typical fabricated device shows a mode conversion efficiency higher than 99% over a bandwidth of ~4 nm and a temperature sensitivity of 3.5 nm/°C, which allows the operation wavelength of the device to be tuned over the C + L band with a temperature control <;30 °C. This mode converter could be integrated with other waveguide devices to realize more sophisticated functions for mode-division-multiplexing systems.
Keywords :
diffraction gratings; infrared spectra; integrated optoelectronics; light polarisation; multiplexing; optical communication equipment; optical design techniques; optical fabrication; optical polymers; optical tuning; optical waveguides; C-L band; corrugated grating; fundamental mode conversion; higher order mode conversion; input light polarization state; mode conversion efficiency; mode-division-multiplexing systems; polymer waveguide grating; temperature control; temperature sensitivity; transmission characteristics; wavelength-tunable mode converter; Couplings; Gratings; Multiplexing; Optical fibers; Polymers; Temperature measurement; Grating; mode converter; mode-division-multiplexing; mode-divisionmultiplexing; optical waveguide; polymer waveguide;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2448793
