Difference Between LED VS LASER Diode
LED Diode :
-Full form of LED- light emitting diode.
-LED's are small in size, longer life, reliable and require little power.
-Here generation photon by spontaneous emittion.
-LED's produce a divergent and incohrent light beam.
-Types of LED 1>Surface emitter and 2> Edge emitter.
-Their response is fast.
-A wide range of wavelengths is available.
-The cost of LED would be less.
-An intensity of generating light is less.
-Coupling efficiency of LED with fiber is less.
-LED's use with the multimode fibers.
-Bandwidth of led is moderate.
-In led have require no extra circuit because of its simple circuit.
-Here require drive current is 50 to 100mA.
LASER Diode :
-Full form of LASER - light emplification by stimulated emmition of radiation.
-Laser's are bigger in size, longer life, less reliable and require more power then LED.
-Here generating photon by stimulated emittion.
-Laser produce q monochromatic and coherent light beam.
-Types of Laser 1> semiconductor laser and 2> Gas laser.
-Their response is faster than LED.
-A small range of wavelength is available.
-The cost of Laser would be higher.
-Coupling efficiency of Laser with fiber is higher.
-Laser use with both single mode and multi mode fibers.
-Bandwidth of laser is higher.
-In laser have require extra circuit for isolation of temperature reaction.
-Here require drive current is Therashold current 5 to 40mA.
-Full form of LED- light emitting diode.
-LED's are small in size, longer life, reliable and require little power.
-Here generation photon by spontaneous emittion.
-LED's produce a divergent and incohrent light beam.
-Types of LED 1>Surface emitter and 2> Edge emitter.
-Their response is fast.
-A wide range of wavelengths is available.
-The cost of LED would be less.
-An intensity of generating light is less.
-Coupling efficiency of LED with fiber is less.
-LED's use with the multimode fibers.
-Bandwidth of led is moderate.
-In led have require no extra circuit because of its simple circuit.
-Here require drive current is 50 to 100mA.
LASER Diode :
-Full form of LASER - light emplification by stimulated emmition of radiation.
-Laser's are bigger in size, longer life, less reliable and require more power then LED.
-Here generating photon by stimulated emittion.
-Laser produce q monochromatic and coherent light beam.
-Types of Laser 1> semiconductor laser and 2> Gas laser.
-Their response is faster than LED.
-A small range of wavelength is available.
-The cost of Laser would be higher.
-Coupling efficiency of Laser with fiber is higher.
-Laser use with both single mode and multi mode fibers.
-Bandwidth of laser is higher.
-In laser have require extra circuit for isolation of temperature reaction.
-Here require drive current is Therashold current 5 to 40mA.
Category: Technology
