The Nd: YAG laser has a narrow line width which is_________________:-

The average splice loss for a single mode mechanical splice is:-

How many sections are included in a sampling grating distributed Bragg- reflector laser:-

The ___________ ray passes through the axis of fibre core:-

Linear scattering effects are _________ in nature:-

In Buried hetero junction laser, the optical field is confined within:-

A rating of 35 dB indicates a cable shield effectiveness that is considered to be:-

A most important velocity in the study of transmission characteristics of optical fiber is:-

A device which converts electrical energy in the form of a current into optical energy is called as:-

The active layer composition must be adjusted if a particular center wavelength is desired:-

The non linear effects in optical fiber are large:-

_______ technique is method of preparing extremely pure optical glasses;-

How many fabrication techniques are used for 3 port  fiber couplers:-

Which equation best suited for the study of electromagnetic wave propagation:-

Fiber drawing using preform was useful for the production of graded index fiber:-

_____________________ lasers are presently the major laser source of optical fiber communications:-

At what temperature range, does the melting of multi components system take place;-

How many types of fiber splices are available:-

Injection laser have a high threshold current density of:-

In a multi fiber , much of light coupled in the fiber from an LEDs is;-

The lasing output of the basic Fabry perot cavity fiber is  restricted to between:-

Better confinement of optical mode is obtained in:-

The primary function of the structured member is load bearing:-

Mobile phone commercially available in ____________ year:-

Raman and Brillouin scattering are usually observed at:-