Materials science

Optical fiber

Apodization

Fiber optic sensor

Wavelength

Laser

Physics

Optics

Grating

Long-period fiber grating

Graded-index fiber

Fiber Bragg grating

Chirp

Indonesian Journal of Electrical Engineering and Computer Science

&lt;p&gt;The paper has demonstrated the first order surface grating fiber coupler under the period chirp and apodization functions variations effects. The Fiber coupler transmittivity/reflectivity, the fiber coupler grating index change and the fiber coupler mesh transmission cross-section are clarified against the grating length with the quadratic/cubic root period chirp and Gaussian/uniform apodization functions. The fiber coupler delay and dispersion are simulated and demonstrated with grating wavelength with quadratic/cubic root period chirp and Gaussian/uniform apodization function. As well as the fiber coupler output pulse intensity is simulated against the time period with the quadratic/cubic root period chirp and Gaussian/uniform apodization function. The fiber coupler peak intensity variations against the transmission range variations is also demonstrated by OptiGrating simulation software.&lt;/p&gt;

First order surface grating fiber coupler under the period chirp and apodization functions variations effects