Glass-clad crystal fibers based functional optical coherence tomography

Broadband emissions centered at 560 nm, 770 nm, and 1380 nm from glass-clad crystal fibers with 3-dB bandwidths of 98, 180, and 240 nm were used for various biomedical and in-vivo optical tomography applications with cellular resolution. The adjacent image pixel cross talks are less than -20 dB due to the near Gaussian spectral shapes of the broadband emissions.