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

fYear

2004

fDate

8-10 Dec. 2004

Firstpage

295

Lastpage

298

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Optoelectronic and Microelectronic Materials and Devices, 2004 Conference on

Conference_Location

Brisbane, Qld.

Print_ISBN

0-7803-8820-8

Type

conf

DOI

10.1109/COMMAD.2004.1577549

Filename

1577549