Hi I'm from Kolkata, India. I have been using a 3 Mbps DSL internet connection since 2013. I do get a speed of 300-350 KBps in average. Nowadays the ISP is telling me that they are gonna provide me a fiber optic internet connection of that same 3 Mbps speed, I just need to spend ₹1500 ($23 approx.) on that. Now my question is, what I'm gonna get with that new fiber optic connection? Would it really matter and crank up my internet speed? Would mmy D-Link DIR 600L router work with that? Thank you.