Which of the following factors does not cause divergence of the collimated beam from a GRIN-rod lens?

Related MCQs

• 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.
• Sapphire ball lens expanded beam design is successful than spherical lens coupled design. State whether the given statement is true or false.
• Lens-coupled expanded beam connectors exhibit average losses of _________ in case of single mode and graded index fibers.
• The expanded beam connectors use ____________ for beam expansion and reduction.
• 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.
• Determine the overall power conversion efficiency of lens coupled SLED having forward current of 20 mA and forward voltage of 2 V with 170 μWof optical power launched into multimode step index fiber.
• The overall power conversion efficiency of electrical lens coupled LED is 0.8% and power applied 0.0375 V. Determine optical power launched into fiber
• Which of these factors are critical in affecting the system performance in the case of coherent optical fiber transmission?
• Losses caused by factors such as core-cladding diameter, numerical aperture, relative refractive index differences, different refractive index profiles, fiber faults are known as