laser device helium leak test 1

I need to test laser devices to see if they have fine leak. But the devices have fiber and connector. Before the helium test, the whole thing will be put into helium gas chamber (45psi) for 5 hours. If I put the whole device (including fiber and connector)into the test chamber, I will get the wrong result because the fiber and connector release the helium gas.
How can I solve the problem? Thank you.