1.

The beat length in a single mode optical fiber is 8 cm when light from a laser with a peak wavelength 0.6μm is launched into it. Estimate the modal birefringence.

A. 1×10-5
B. 3.5×10-5
C. 2×10-5
D. 4×10-5
Answer» B. 3.5×10-5


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