MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Optical Communication knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
GRIN-rod lens connectors have loss characteristics that are independent of the modal power distribution in the fiber. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
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. |
| A. | 1 to 5 degrees |
| B. | 9 to 16 degrees |
| C. | 4 to 8 degrees |
| D. | 25 to 50 degrees |
| Answer» B. 9 to 16 degrees | |
| 3. |
Sapphire ball lens expanded beam design is successful than spherical lens coupled design. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
What is the use of interposed optics in expanded beam connectors? |
| A. | To achieve lateral alignment less critical than a butt-joined fiber connector |
| B. | To make a fiber loss free |
| C. | To make a fiber dispersive |
| D. | For index-matching |
| Answer» B. To make a fiber loss free | |
| 5. |
THE_MAJORITY_OF_THE_GRIN-ROD_LENSES_HAVE_DIAMETERS_IN_THE_RANGE_OF_____________?$ |
| A. | 2 to 2.5 mm |
| B. | 3 to 4 mm |
| C. | 0.1 to 0.4 mm |
| D. | 0.5 to 2 mm |
| Answer» E. | |
| 6. |
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.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Which_of_the_following_factors_does_not_cause_divergence_of_the_collimated_beam_from_a_GRIN-rod_lens?$ |
| A. | Lens cut length |
| B. | Size of fiber core |
| C. | Refractive index profile |
| D. | Chromatic aberration |
| Answer» D. Chromatic aberration | |
| 8. |
In the given equation, if r is the radial distance, n is the refractive index; what does z stands for? |
| A. | (d n/dr) |
| B. | Focal length |
| C. | Distance along the optical axis |
| D. | Axial angle |
| Answer» C. Distance along the optical axis | |
| 9. |
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.$ |
| A. | 1 to 5 degrees |
| B. | 9 to 16 degrees |
| C. | 4 to 8 degrees |
| D. | 25 to 50 degrees |
| Answer» B. 9 to 16 degrees | |
| 10. |
___________ exhibits a parabolic refractive index profile with a maximum at the axis similar to graded index fiber. |
| A. | Lens coupled design |
| B. | Sapphire ball lens |
| C. | Spherical micro-lens |
| D. | GRIN-rod lens |
| Answer» E. | |
| 11. |
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. |
| A. | Aperture |
| B. | Focal length |
| C. | Curve |
| D. | Exterior circumference |
| Answer» C. Curve | |
| 12. |
Sapphire ball lens expanded beam design is successful than spherical lens coupled design. State whether the given statement is true or false. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Lens-coupled expanded beam connectors exhibit average losses of _________ in case of single mode and graded index fibers. |
| A. | 0.3 dB |
| B. | 0.7 dB |
| C. | 0.2 dB |
| D. | 1.5 dB |
| Answer» C. 0.2 dB | |
| 14. |
The expanded beam connectors use ____________ for beam expansion and reduction. |
| A. | Square micro-lens |
| B. | Oval micro-lens |
| C. | Spherical micro-lens |
| D. | Rectangular micro-lens |
| Answer» D. Rectangular micro-lens | |