Optics Answers

object is placed in front of a diverging lens with a focal length of 6 CM. Find the image distance for an object distance of 9 cm. Answer in units of cm.

object is placed in front of a diverging lens with a focal length of 8 CM. Find the image distance for an object distance of 12 cm. Answer in units of cm.

A mechanical splice in a multimode step index fiber has a lateral offset of 16% of the fiber core radius. The fiber core has a refractive index of 1.49, and an index matching fluid with a refractive index of 1.45 is inserted in the splice between the butt-jointed fiber ends. Assuming no longitudinal or angular misalignment, estimate the insertion loss of the splice.

Describe, with the aid of suitable diagrams, three common techniques used for the mechanical splicing of optical fibers. A mechanical splice in a multimode step index fiber has a lateral offset of 16% of the fiber core radius. The fiber core has a refractive index of 1.49, and an index matching fluid with a refractive index of 1.45 is inserted in the splice between the butt-jointed fiber ends. Assuming no longitudinal or angular misalignment, estimate the insertion loss of the splice.

What is critical angle.

Explain YDSE

With the aid of simple sketches outline the major categories of multiport optical fiber coupler. Describe two common methods used in the fabrication of three- and four-port fiber couplers.

Describe, with the aid of suitable diagrams, three common techniques used for the mechanical splicing of optical fibers. A mechanical splice in a multimode step index fiber has a lateral offset of 16% of the fiber core radius. The fiber core has a refractive index of 1.49, and an index matching fluid with a refractive index of 1.45 is inserted in the splice between the butt-jointed fiber ends. Assuming no longitudinal or angular misalignment, estimate the insertion loss of the splice.

Describe what is meant by the fusion splicing of optical fibers. Discuss the advantages and drawbacks of this jointing technique. A multimode step index fiber with a core refractive index of 1.52 is fusion spliced. The splice exhibits an insertion loss of 0.8 dB. This insertion loss is found to be entirely due to the angular misalignment of the fiber core axes which is 7°. Determine the numerical aperture of the fiber.