Most fiber-optic communication networks utilize lasers that emit light between 0

Question

Most fiber-optic communication networks utilize lasers that emit light between 0.81 – 0.89 m. Which of the four semiconductors in the plot to the left could be employed to make such a laser? (Hint: Recall that you can relate the wavelength to the Band Gap Energy) (Refer to: Useful Information link ) Which of the four semiconductors in the plot to the left could be employed to make such a laser? (Hint: Recall that you can relate the wavelength to the Band Gap Energy) (Refer to: Useful Information link ) 1. Ge 2. CuBr 3. ZnSe 4. GaAs 5. None of them

Explanation / Answer

Gallium arsenide (GaAs) is used to make laser of wavelength 0.81 um to 0.89um .

Option 4 is correct

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