# Homework Help: Fabry-Perot problem

1. May 22, 2008

### tuanle007

1. The problem statement, all variables and given/known data

Show that it is only necessary to increase the distance L between two mirrors of a Fabry-Perot cavity by a distance $$\lambda$$/2 to scan the transmission peak over a range of one FSR

2. Relevant equations

3. The attempt at a solution
D=2L*sqrt(1+v^2/c^2)

2. May 23, 2008

### sx70

I've started guiding you through the solution of your other posted problem. This attempt is really lame. Start by looking in your book and telling me what the FSR is.

3. May 23, 2008

### tuanle007

my book doesnt have FSR anywhere.
I have never seen this type of problem.