Drag the light beam into and out of the fiber optic. Change the angle of the beam.
<script language="JavaScript">
function fiber(){
document.Optics.setDefault();;
document.Optics.addIndexChange(1.0,1.4);
document.Optics.addIndexChange(2.0,-1.4);
document.Optics.setDirection(1);
document.Optics.setPropertyDrag(true);
document.Optics.setDrag(true);
document.Optics.setRayRGB(255,255,255);
document.Optics.addISource(1.5,-0.5,100,-1.0);
}
</script>