Howdy all. I'm interested in getting a lot of white light into a multimode optical fiber. I've got an aspheric lens that'll couple collimated light into the fiber (Thorlabs F220SMA-A) This will be a one-off gizmo for use in our corporate lab as an alignment tool.
After some reading, it seems that a Cree XRE LED might be a good choice since their light is emitted in a ~50 degree cone. If I use an appropriate lens for collimation, then expand/shrink the beam as necessary with a telescope and apply my adapter lens, I should get a half-decent amount of light into the fiber.
My question: has anyone tried something like this? Are there any commercial solutions? I've come across a few halogen ones that manage 10 mW of light into a big fiber, and an LED one costing a few thousand $. Is the Cree a good LED for this application? Thanks!
After some reading, it seems that a Cree XRE LED might be a good choice since their light is emitted in a ~50 degree cone. If I use an appropriate lens for collimation, then expand/shrink the beam as necessary with a telescope and apply my adapter lens, I should get a half-decent amount of light into the fiber.
My question: has anyone tried something like this? Are there any commercial solutions? I've come across a few halogen ones that manage 10 mW of light into a big fiber, and an LED one costing a few thousand $. Is the Cree a good LED for this application? Thanks!
That Polymer Optics lens looks like it could do the trick along with the Thorlabs lens.
