PHOTODIODE BPW34

I am using the photodiode BPW34 for my visible light communication. Will this photodiode sense modulated light of frequency 1 Mhz.

Thank you.

The data sheet for the diode shows:

Rise time VR = 10 V, RL = 1 kΩ, λ = 820 nm tr 100 ns
Fall time VR = 10 V, RL = 1 kΩ, λ = 820 nm tf 100 ns

How many nanoseconds are there in 1 Mhz?

Paul