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Across
  1. 3. figure of merit for detector
  2. 4. noise associated with intensity fluctuations
  3. 12. requirement for detectors
  4. 13. LED has lambertian output pattern
  5. 14. the average no of e-h pair created by per unit distance travelled
  6. 15. high resistivity p-type material deposited as an epitaxial layer on a p+ substrate
Down
  1. 1. dynamic line broadening in laser
  2. 2. performance of a photodetector
  3. 5. carrier multiplication
  4. 6. current arises from the electron and / or holes which are thermally generated
  5. 7. short length of fiber already attached to the source
  6. 8. newly created carries are the cause of further impact ionization
  7. 9. ratio of average value of the total multiplied output current to primary unmultiplied photocurrant
  8. 10. advantage of pin photo diode
  9. 11. noise due to random motion of electronics