Q.1.
A multiplexing technique which does not involve the application of several message signals onto a single fiber is called as
Q.2.
In                  the optical channel bandwidth is divided into non-overlapping frequency bands.
Q.3.
How many encoding schemes are used in optical fiber communication system design requirements?
Q.4.
A regenerative repeater is called as
Q.5.
The                        incorporates a line receiver in order to convert the optical signal into the electrical regime.
Q.6.
limits the maximum distance between the optical fiber transmitter and receiver.
Q.7.
is the unique property of the glass fiber.
Q.8.
Mean splice insertion losses of 0.dB are obtained using multimode graded index fibers with the Springroove splice.
Q.9.
is caused by surface tension effects between the two fiber ends during fusing.
Q.10.
The rounding of the fiber ends with a low energy discharge before pressing the fibers together and fusing with a stronger arc is called as
Q.11.
Which of the following is not used as a flame heating source in fusion splicing?
Q.12.
The heating of the two prepared fiber ends to their fusing point with the application of required axial pressure between the two optical fibers is called as
Q.13.
In score and break process, which of the following is not used as a cutting tool?
Q.14.
What is the main requirement with the fibers that are intended for splicing?
Q.15.
The insertion losses of the fiber splices are much less than the Fresnel reflection loss at a butted fiber joint.
Q.16.
A permanent joint formed between two different optical fibers in the field is known as a
Q.17.
2 dB along with a splice loss of 0.1 dB at the interconnection of each stage. Determine the excess loss.
Q.18.
A                            coupler comprises a number of cascaded stages, each incorporating three or four-port FBT couplers to obtain a multiport output.
Q.19.
How many manufacturing methods are used for producing multimode fiber star couplers?
Q.20.
Couplers insertion loss is same as that of excess loss.