Click the Exhibit button to view the graph.

The graph represents optical signal power versus wavelength measurement from 1550nm to 1560nm. The laser type that provides very narrow spectral widths, (<100kHz) in the 1550nm range for DWDM applications (as shown in the graph), is an example of a:

A.
Red Light Emitting Diode laser

B.
Fabry-Perot laser

C.
Distributed Feedback laser

D.
Edge Emitting LED laser

E.
Vertical Cavity Surface Laser