What makes a good fiber lapping puck?
Added 2018-08-18 17:07:08 +0000 UTCAnother thing I haven't forgotten: The fiber laser and driver ... I wanted to switch to an even higher grit lapping film or paste and a disk for holding the ferrule at a constant angle.
Such a disk is a bit of specialty tool and inherently expensive. So I thought I'd try and DIY one with a 5 cent coin and the amazing dc-drill-press. Since I seem to have the perfect diameter drill bit, I can now also make a heat sink for the ferrule which is fantastic.
Another concern: Some say, I have spread out the fibers to a larger area, so that I can focus them into the absolute minimum point. 'Numeric aperture' is a term I usually hear in that context, but I haven't looked into it yet.
Today's OSMU progress:https://imgur.com/a/sXd2ANJ
Apart from some component values and smaller double-op-amps I think it's ready for another try. It's going to be an expensive attempt with all those IL300 and HV op amps, but if it works in theory I can optimize later. An integrated analog front end like AD7292 would be a more professional approach than this, but I haven't found the perfect component for the job yet.
Comments
Puck / cent material getting in the way sounds very plausible! Maybe I can prevent that by limiting the ferrule movement to the 5 cent diameter and doing the whole thing under running water?
Marco Reps
2018-08-18 18:06:25 +0000 UTCOne aspect of lapping pucks is they generally set the proper distance between the face of the fiber and the terminating connector/body. e.g. Connector XYZ positions the fiber's face N millimeters beyond the mating face of the connector. If you, down the road, were to use a piece of optics that accepts a given connector style that spacing may be very important (depending on utility and how adjustable said piece is). Commercial pucks are reamed and generally made of material resistant to abrasion so as to minimize the amount of the puck material embedding itself into the fiber.
Metanoic
2018-08-18 17:45:33 +0000 UTCWhen uploading from mobile I can't change volume, which would have resulted in a few casualties with this drilling sound ... so I had to add stock music to get to this volume mixer thingy
Marco Reps
2018-08-18 17:09:09 +0000 UTC
