Handbook of Biomedical Optics

Assessing Microscopic Structural Features Using Fourier-Domain Low Coherence Interferometry 473

imaging spectrometer optics, along with the combination of the

1200 lines/mm grating and the 1024 pixel CCD array, limits the

detected spectrum to the 500–625 nm range. e high resolution

of this grating is necessary to achieve the depth range desired in

the coherence images. Other spectral regions can be accessed by

tuning the center wavelength of the span or employing a mul-

tichannel spectrometer for simultaneous measurements. Data

from the spectrometer are downloaded in real time to a laptop

PC via the USB 2.0 interface, and spectrometer control ...