I’m new to the software so I need some help, I want to use a fiber bragg grating as a filter to reflect a wave at wavelength of 1.55 microns , by using a laser with range from 1.48 to 1.62 microns so I used the sweep for the laser , and then placed the FBG and set it at lamda of 1.55 microns but when I run the project and use optical analyzer the reflected wave is at 1.62 microns which the last lamda in the range of laser, I really don’t know what to do I tried alot and watched videos but didn’t find anything similar to what I want
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