Hello Asif,after going through the tutorials and introduction about optigrating as attached by Alistu ,you will be able to understand what type of work you can do in grating.Better you search the papers as i have seen many papers on fbg on ieee current issues .However you hace to read and select that you be able to reproduce in grating and optisystem.I have attached some of the papers in your one of the post which can be implemented in optisystem and further you can work on them by using opti grating.Kindly visit current issues of some good journals for recent papers on fbg sensing application or dispersion compnsation etc,in this way you will able to know ,what type of work has been done and researcher qorking on.Thank you