What is one advantage and one disadvantage of single-mode fiber with a large mode field diameter (MFD)?

The correct answer highlights important characteristics of single-mode fiber with a large mode field diameter (MFD). One key advantage is that this type of fiber is easier to splice. This is primarily due to the larger mode field diameter allowing for a greater acceptance of alignment during the splicing process, which can enhance the quality of the splice and reduce splice loss.

On the other hand, this single-mode fiber design also has a disadvantage, as it tends to be more sensitive to bending losses. Bending losses occur when the fiber is bent sharply, causing light to leak out of the core. A larger MFD can exacerbate this sensitivity to bends, making careful installation and handling critical to maintaining performance.

While other choices may offer advantages or features related to fiber optics, they do not specifically address the unique balance of splice ease and bending sensitivity associated with large MFD single-mode fibers. This understanding helps in making informed decisions during installation and maintenance in various fiber optic applications.