Title :
A wavelength sensor by optical directional coupler
Author :
Sae-tang, K. ; Somkuarnpanit, S.
Author_Institution :
Fac. of Eng., KMITL, Bangkok, Thailand
Abstract :
A wavelength sensor based on the optical directional coupler is proposed in the paper. The finite-difference time-domain (FDTD) method is used to calculate of the light intensity propagating thorough the structure, and to find the appropriate dimensions of the structure. A particular dimension of the device has shown the coupling efficiency varying linearly with wavelengths. Thus, the structure could be employed as the wavelength sensor for the wavelength in a range between 1.2 μm and 1.6 μm.
Keywords :
finite difference time-domain analysis; optical directional couplers; optical sensors; 1.6 to 1.6 mum; finite-difference time-domain method; light intensity; optical directional coupler; wavelength sensor; Directional couplers; Finite difference methods; Optical coupling; Optical propagation; Optical refraction; Optical sensors; Optical variables control; Optical waveguides; Refractive index; Time domain analysis;
Conference_Titel :
Communications and Information Technology, 2005. ISCIT 2005. IEEE International Symposium on
Print_ISBN :
0-7803-9538-7
DOI :
10.1109/ISCIT.2005.1566968
