Title :
Characteristics of a spectrum-slicing filter composed of an angle-tuned Fabry-Perot etalon and a Gaussian input beam
Author :
Lee, Jae-Seung ; Shim, Chang-Sup
Author_Institution :
Optical Transmission Sec., Electron. & Telecommun. Res. Inst., Seoul, South Korea
Abstract :
We present the first analysis of the spectrum-slicing filter composed of an angle-tuned Fabry-Perot etalon and a slightly divergent Gaussian input beam. The channel bandwidth is strongly dependent on the minimum beam spot size and the refractive index of the etalon substrate but insensitive to other etalon parameters. The channel center and the channel power resemble closely those of the pure plane wave incidence case. Fortunately, the channel shape evolves from the Lorentzian to the more favorable Gaussian as the channel bandwidth increases.<>
Keywords :
Fabry-Perot interferometers; fibre lasers; light sources; optical fibre communication; optical fibre filters; optical transmitters; refractive index; Gaussian input beam; Gaussian shape; Lorentzian shape; angle-tuned Fabry-Perot etalon; channel bandwidth; channel shape; etalon substrate; minimum beam spot size; plane wave incidence; refractive index; spectrum-slicing filter; Bandwidth; Dielectric substrates; Fabry-Perot; Integral equations; Light sources; Optical fiber amplifiers; Optical filters; Optical refraction; Optical variables control; Shape;
Journal_Title :
Photonics Technology Letters, IEEE