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

How many categories of fiber connectors exist?

The basic ferrule connector is also called as_______________

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

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.

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

Bi-conical ferrule connectors are less advantageous than cylindrical ferrule connectors. State whether the given statement is true or false.

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

When considering source-to-fiber coupling efficiencies, the ________ is an important parameter than total output power.

It is a device that distributes light from a main fiber into one or more branch fibers.

Optical fiber couplers are also called as ________________

How many types of multiport optical fiber couplers are available at present?

The optical power coupled from one fiber to another is limited by

________ couplers combine the different wavelength optical signal onto the fiber or separate the different wavelength optical signal output from the fiber.

How many fabrication techniques are used for 3 port fiber couplers?

The most common method for manufacturing couplers is ____________

A four-port multimode fiber FBT coupler has 50 μWoptical power launched into port 1. The measured output power at ports 2,3 and 4 are 0.003, 23.0 and 24.5 μW respectively. Determine the excess loss.

A four-port FBT coupler has 60μW optical power launched into port one. The output powers at ports 2, 3, 4 are 0.0025, 18, and 22 μW respectively. Find the split ratio?

Calculate the splitting loss if a 30×30 port multimode fiber star coupler has 1 mW of optical power launched into an input port.

A _____________ coupler comprises a number of cascaded stages, each incorporating three or four-port FBT couplers to obtain a multiport output.

A number of three-port single-mode fiber couplers are used in the fabrication of a ladder coupler with 16 output ports. The three-port couplers each have an excess loss of 0.2 dB along with a splice loss of 0.1 dB at the interconnection of each stage. Determine the excess loss.

It is a passive device which allows the flow of optical signal power in only one direction and preventing reflections in the backward direction.

Which feature of an optical isolator makes it attractive to use with optical amplifier?

How many implementation methods are available for optical isolators?

A device which is made of isolators and follows a closed loop path is called as a ____________

The commercially available circulators exhibit insertion losses around ________________

A combination of a FBG and optical isolators can be used to produce non-blocking optical wavelength division add/draw multiplexers. State whether the given statement is true or false.