Title :
Focusing grating couplers for polarization detection
Author :
Ura, Shogo ; Sunagawa, Hiroshi ; Suhara, Toshiaki ; Nishihara, Hiroshi
fDate :
6/1/1988 12:00:00 AM
Abstract :
A new polarization detection method using focusing grating couplers was proposed and demonstrated. Mode dispersion of a waveguide and high selectivity of the coupling condition of the grating is utilized for detecting the polarization state of a beam in the air. The crosstalk depends on the grating aperture and the index difference between TE and TM modes in the waveguide. A high performance device was designed and fabricated, and the function was experimentally confirmed by using a laser diode of 0.83 μm wavelength
Keywords :
diffraction gratings; integrated optics; light polarisation; optical couplers; optical waveguides; 0.83 micron; TE modes; TM modes; crosstalk; focusing grating couplers; grating aperture; laser diode; polarization detection; polarization state; Apertures; Couplers; Crosstalk; Diode lasers; Gratings; Laser beams; Optical coupling; Optical design; Polarization; Tellurium;
Journal_Title :
Lightwave Technology, Journal of
