Absorption Flashcards
1
Q
What causes intrinsic absorption of UV light?
A
~ electron energy transitions
2
Q
How does intrinsic IR absorption occur?
A
~ resonance with atomic vibrations
3
Q
When does IR absorption in glass fibers increase?
A
~ it significantly increases above 1600nm
4
Q
What do impurities do?
A
~ (ex: transition metal ions) facilitate absorption bands via transitions between electron energy states
5
Q
What causes the absorption of OH- residing in the glass network?
A
~ induced by vibration of the OH- ions at 950, 1280, and 1400nm.
~ optical systems are designed to avoid these OH- peaks
~ OH- is pernicious to optical communication
