Q. _____________ are formed by sandwiching the butted fiber ends between a V-groove glass substrate and a flat glass retainer plate.

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Q. Mean splice insertion losses of 0.05 dB are obtained using multimode graded index fibers with the Springroove splice.

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Q. Alignment accuracy of the order ___________ is obtained using the three glass rod alignment sleeve.

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Q. In case of multiple fusion, splice losses using an electric arc fusion device with multimode graded index fiber range from ____________

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Q. Demountable fiber connectors are more difficult to achieve than optical fiber splices.

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Q. What is the use of an index-matching material in the connector between the two jointed fibers?

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Q. How many categories of fiber connectors exist?

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Q. The basic ferrule connector is also called as _____________

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Q. What is the use of watch jewel in cylindrical ferrule connector?

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Q. The concentricity errors between the fiber core and the outside diameter of the jeweled ferrule are in the range of ___________ with multimode step-index fibers.

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Q. The typical average losses for multimode graded index fiber and single mode fiber with the precision ceramic ferrule connector are _____________ respectively.

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Q. Bi-conical ferrule connectors are less advantageous than cylindrical ferrule connectors.

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Q. In connectors, the fiber ends are separated by some gap. This gap ranges from ____________

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Q. What is the use of interposed optics in expanded beam connectors?

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

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Q. Lens-coupled expanded beam connectors exhibit average losses of _________ in case of single mode and graded index fibers.

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Q. Sapphire ball lens expanded beam design is successful than spherical lens coupled design.

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Q. 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.

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Q. ___________ exhibits a parabolic refractive index profile with a maximum at the axis similar to graded index fiber.

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Q. The GRIN-rod lens can produce a collimated output beam with a divergent angle α of between _____________ from a light source situated on, or near to, the opposite lens face.

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