Small tube for a 400 micron optical fiber
Small tube for a 400 micron optical fiber
(OP)
Hi there,
We want so measure the light on a 8mm hole. For that we will scan the positions inside (x-y) with a 400 micron fiber. We have two linear stages in order to move the fiber (in a counterlever position) across the hole plane.
For that we need a tube of around 500micron diameter (we will fit the fiber with glue, then we polish the front). I asked in our workshop and they can not make a hole deeper than 5mm. The other problem is the outer diameter of the tube.
I guess one can buy directly a tube. This is what we need:
Inner diameter: 500 microns
Outer diameter: 1000-1500 microns
Length: 20mm (1 inch)
Does anybody know if one can buy a tube like this?
We have some FC/PC connectors, I thought we can machine one, but it is not the best solution
thank you
regards,
We want so measure the light on a 8mm hole. For that we will scan the positions inside (x-y) with a 400 micron fiber. We have two linear stages in order to move the fiber (in a counterlever position) across the hole plane.
For that we need a tube of around 500micron diameter (we will fit the fiber with glue, then we polish the front). I asked in our workshop and they can not make a hole deeper than 5mm. The other problem is the outer diameter of the tube.
I guess one can buy directly a tube. This is what we need:
Inner diameter: 500 microns
Outer diameter: 1000-1500 microns
Length: 20mm (1 inch)
Does anybody know if one can buy a tube like this?
We have some FC/PC connectors, I thought we can machine one, but it is not the best solution
thank you
regards,





RE: Small tube for a 400 micron optical fiber
TTFN
I can do absolutely anything. I'm an expert!
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: Small tube for a 400 micron optical fiber
we haven't thought about a camera. I'll tell my colleagues.
The idea is our "reading" fiber will go to a photomultiplier, which is supposed to have a very good resolution.
cheers,
RE: Small tube for a 400 micron optical fiber
If you're using a PMT, does that mean you're expecting very low signal levels? That might be a non-starter for most cameras. Since you'd have to scan the PMT to get what you want, the intensity profile needs to be stable for the duration of the scan, which could provide a reasonably sensitive camera enough integration time and frame integration to make up for the poorer SNR.
TTFN
I can do absolutely anything. I'm an expert!
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: Small tube for a 400 micron optical fiber
I found microgroup.com
RE: Small tube for a 400 micron optical fiber
Apparently my colleague wants to use the PMT to be able to count photons.
We finally will machine a kindof cone with a small tip
thanks to all!