Question
Download Solution PDFWhich of the following are advantages of LASER over LED?
a) Higher bandwidth and higher data rate
b) Higher output power
c) Longer lifetime
d) Cheap
Select the correct answer:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe laser has higher bandwidth and higher data rate.(Statement (a) is correct)
Lasers can produce high output power in fiber optic communications. The laser source is useful for high power i.e. more than 20 mW is available. (Statement (b) is correct).
LED’s have a longer life than lasers, i.e.LED’s: 105 - 108 hours (Statement (c) is incorrect).
|
LED |
LASER |
|
Non-coherent light source |
LASER is a Coherent light-producing technology |
|
LED produce different colors of light at a time |
It produces only a specific color of light at a time. |
|
Light wavelength is less |
Light wavelength is more |
|
Does not affect human health |
Affects human health |
|
Less power consumption |
More power consumption |
|
Costly |
Less costly |
|
More power required |
Less Power required |
Last updated on Jun 6, 2025
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