Title :
The Wavelength Sensor Using Optical Directional Coupler
Author :
Jaturantruengsri, S. ; Sae-tang, K. ; Somkuarnpanit, S.
Author_Institution :
Fac. of Eng., King Mongkut´´s Inst. of Technol., Bangkok
Abstract :
This paper proposes a wavelength sensor based on the optical directional coupler. The finite-difference time-domain (FDTD) is used to calculate of the light intensity propagating through the structure, and to find the appropriate dimensions of the structure. The structure with the size of 0.4 mum times 0.4 mum, and particular lengths would provide 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 mum and 1.6 mum
Keywords :
finite difference time-domain analysis; infrared detectors; integrated optics; light propagation; optical directional couplers; optical sensors; photodetectors; 0.4 mum; 1.2 to 1.6 mum; coupling efficiency; finite-difference time-domain method; light intensity propagation; 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; Directional coupler; FDTD; Wavelength sensing;
Conference_Titel :
Optoelectronic and Microelectronic Materials and Devices, 2004 Conference on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-8820-8
DOI :
10.1109/COMMAD.2004.1577549
