Unit 2.1: Semiconductors and Optical Fibre

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Across
  1. 2. a monochromatic and less divergent source of light
  2. 3. refractive index of core is maximum at the centre and decreases towards the cladding
  3. 5. flow of charges from high concentration region to low concentration region
  4. 6. vacancy created after a covalent bond breaks
  5. 8. level occupied by the last electron
  6. 10. Form of Pure Semiconductors
  7. 14. loss due to change in the intensity of input pulse
  8. 15. electron stays here for longer period of time
Down
  1. 1. current flowing per unit area
  2. 4. ease with which an electron flows in a material
  3. 7. light gathering capacity of an optical fibre
  4. 9. solid having band gap more than 5eV
  5. 11. binary digits communicated per unit time
  6. 12. amplication of laser takes place
  7. 13. energy levels participate in the lasing action