Across
- 3. desirable spectral width for optical source
- 4. heterojunetion- structure
- 7. impurity give up an electron to the conduction band.
- 9. perfect material containing no impurities
- 10. outer- shell electrons
- 13. does not exhibit catastrophic degradation
- 14. geometry which provides optical confinement in vertical direction
- 15. higher external power efficiency than the planar
Down
- 1. source that compatible with SMF
- 2. inversion population of upper energy level is greater than population of lower energy level
- 5. distortion drawback of LED
- 6. bias on which depletion width increases
- 8. cavity cavity has mirror at both ends
- 11. region where radiative recombination takes place
- 12. type Fermi level closer to conduction band
- 14. optical source strongly dependent on the junction temperature