S. Sheard et al., INTEGRATED-OPTIC IMPLEMENTATION OF A CONFOCAL SCANNING OPTICAL MICROSCOPE, Journal of lightwave technology, 11(8), 1993, pp. 1400-1403
We demonstrate for the first time a confocal scanning optical microsco
pe implemented in an integrated-optic structure. The compact nature of
the device proves to be more suitable for environments where mechanic
al shock can result in optical misalignment of discrete components. Th
e device is implemented in a thin-film optical waveguide with optical
fiber connections for light input and output. An objective lens and fo
cusing beam splitter is incorporated into the waveguide structure to f
orm the sensing head of the microscope. The fabrication of the device
is discussed and both intensity and differential contrast images are p
resented to demonstrate the device operation. The confocal imaging cha
racteristics of the microscope are also demonstrated.