numerical aperture

Answer Posted / hiralal

Numerical Aperture (NA): The light-gathering ability of a
fiber; the maximum angle to the fiber axis at which light
will be accepted and propagated through the fiber. NA = sin
a, where a is the acceptance angle. NA also describes the
angular spread of light from a central axis, as in exiting
a fiber, emitting from a source, or entering a detector.

Is This Answer Correct ?    31 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

xplain clearly each layer of osi and tcp reference modle

1348


how does modulation reduce bandwidth

2355


What is an inverter?

615


By referring to the barkhausen criterion and conventional circuit's analysis,show that for the Wein Bridge oscillator to oscillate,the voltage gain (Av) of the op amp must be set to 3 and the feedback ratio must be 1/Av.. Anyone, please help me!

3039


proff of ERLANG B formula???

1638






Do you know q-meter works on which principal?

563


please post me questions for technical interview in tata communications tranformations,

3109


Describe the various methods of thyristor turn on?

640


What is conductor?

627


What is meant by natural commutation?

592


what is the purpose of joining engineering?

2398


what is the last major networking problem you trouble shoot and solved on your own in the last year?

1316


What is meant by sequence control of ac voltage regulators?

604


list the broad classification of adcs.

864


Tell me does area of work only involve closed spaces?

3286