The expanded beam connectors use ____________ for beam expansion and reduction.

Related MCQs

• Lens-coupled expanded beam connectors exhibit average losses of _________ in case of single mode and graded index fibers.
• If the input power 100μW is launched into 6 km of fiber, the mean optical power at the fiber output is 2μW. What is the overall signal attenuation through the fiber assuming there are no connectors or splices?
• GRIN-rod lens connectors have loss characteristics which are independent of the modal power distribution in the fiber. State whether the given statement is true or false.
• Sapphire ball lens expanded beam design is successful than spherical lens coupled design. State whether the given statement is true or false.
• Reduction in the number of modes in multimode fiber increases the mode partition noise. State whether the given statement is true or false.
• The fiber is positioned at the ________ of the lens in order to obtain a collimated beam and to minimize lens-to-lens longitudinal misalignment effects.
• The GRIN-rod lens can produce a collimated output beam with a divergent angle αof between _____________ from a light source situated on, or near to, the opposite lens face.
• Which of the following factors does not cause divergence of the collimated beam from a GRIN-rod lens?
• A step-index fiber has core refractive index 1.46 and radius 4.5μm. Find the cutoff wavelength to exhibit single mode operation. Use relative index difference as 0.25%.
• A step-index fiber has core refractive index 1.46 and radius 4.5μm. Find the cutoff wavelength to exhibit single mode operation. Use relative index difference as 0.25%.