My application calls for inexpensive, straight fiber bundles but the ones that you sell are bent. Is it possible to buy straight ones?

The Optical Fibers that we sell curl back upon themselves because they are stored, typically for long periods of time, in spools which force the fibers to retain a curved shape. The best way to “uncurl” these fibers is to lay them out straight and use a heat gun to heat up the fibers, and then let them cool in a straight shape. Most fibers, such as the ones that we carry, will retain their straight shape for quite some time afterward.