Compare surface emitting LED with edge emitting LED
1 Answer
SR. No.
1. Easy to fabricate Difficult to fabricate
2. Easy to mount and handle Difficult to mount and handle
3. Require less critical tolerances Need critical tolerance on fabrication
4. Less Reliable Highly reliable
5. Low system performance High system performance
6. Less modulation Bandwidth Better Modulation, Bandwidth of the order of hundreds of MHz
7. Couple less optical power into low NA fiber Couple more optical power into low NA fiber
8. Light is emitted from the surface of active Layer Light is emitted from edge of active Layer
9. Wider spectral width Narrow spectral width
10. Maximum quantum efficiency is up to 60% Internal quantum efficiency is in the range of 60% to 80%
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