Question
Which of the following elements is doped to a fiber amplifier in an optical fiber communication system?
MHT CET
Chemistry
d and f Block Elements
2026
MHT CET 2026 (13 April Shift 1)
MHT CET Chemistry Question (2026) — Solution
Options
- A. Tm
- B. Yb
- C. Er
- D. Nd
Answer
C. Er
Step-by-step solution
In optical fiber communication systems, Erbium (Er) is the most commonly used element for doping fiber amplifiers. Erbium-doped fiber amplifiers (EDFAs) are widely used because they can amplify light in the 1550 nm wavelength region, which corresponds to the minimum transmission loss window of silica-based optical fibers. Answer: Er
Related: Chemistry — d and f Block Elements · All PYQ Banks