Title :
A novel flat-band long period grating with special apodization induced by high frequency CO2 laser
Author :
Rao, Y.J. ; Zhu, T.
Author_Institution :
Sch. of Commun. & Inf. Eng., Univ. of Electron. Sci. & Technol. of China, Sichuan, China
Abstract :
We report a special modulation of refractive index design for obtaining long period fiber grating (LPFG) with a broad-band and top flattened transmission spectrum. The LPFG with modulation envelope of refractive index like Gaussian function was fabricated by high frequency CO2 laser pulses in this paper, and the experimental results showed that the top rejection bandwidth was up to 10 nm and the top flatness was less than 0.5 dB, which will have potential applications in optical communications, such as polarization-dependent loss compensators, band selection filters, course wavelength division multiplexers and so on.
Keywords :
carbon compounds; diffraction gratings; high-speed optical techniques; laser materials processing; optical communication equipment; optical design techniques; optical fibre fabrication; refractive index; CO2; CO2 laser; Gaussian function; apodization; long period fiber grating; refractive index design; Bandwidth; Fiber gratings; Fiber lasers; Optical fiber communication; Optical fiber polarization; Optical frequency conversion; Optical polarization; Optical pulses; Pulse modulation; Refractive index;
Conference_Titel :
Optical Fiber Communication Conference, 2006 and the 2006 National Fiber Optic Engineers Conference. OFC 2006
Print_ISBN :
1-55752-803-9
DOI :
10.1109/OFC.2006.215535
