contents
Next: FIBER TO FIBER THROUGHPUT
Previous: INSTRUMENT PERFORMANCE
Up: INSTRUMENT PERFORMANCE


FIBER SPECTRAL TRANSMISSION

Figure 7 shows the transmission characteristics of the fiber optics.

  
Figure 7: Fiber transmission curves.

Both red and blue fiber cables are 25 meters in length. These curves include end reflection losses, but do not include the additional loss (maybe 5-10%) that may be present from the small prism epoxied onto the fiber end. Focal ratio degradation losses are also not included. The focal ratio of the spectrograph collimators are f/6.7 and should collect >95% of the light contained within the output cone of the fibers.



Sam Barden
Tue Aug 29 16:45:05 MST 1995