Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

optical communication numerical aperture

Status
Not open for further replies.
R

rajasekharnbkrist

Junior Member level 2
Joined
Nov 10, 2013
Messages
21
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
182
Why the numerical aperture is less for long distance optical signal transmission and high for small distance optical signal transmission. Please explain the reasons
 

When you are focussing the source on an optical fibre, you want to collect as much light as possible and you will need a high NA. I am not going to make a drawing but I hope this is clear. Fibre is optimum carrier for long distance communication.

When you are in open air, You will try to make a parallel beam for this purpose you will need a small NA; high NA will not focus well. This is useful only for a short distance like a remote control.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top