1 Optoelectronics, photonics and sensors

1.1 Optoelectronics, photonics and sensors

1. The energy of a photon, E, is proportional to its

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2. The color of the light depends on its

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3. TIR (total internal reflection) appears for

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4. Dispersion of light is due to the dependence of the refractive index on

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5. Snell’s law gives the relationship between the

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6. Human eyes can detect lights of wavelength in the range of

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7. PDs (photodiodes) are

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8. Solar cells convert the incident radiation energy into

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9. At the end of the optical communication systems we can find

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10. LEDs are

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11. Photoconductivity is an optoelectronic phenomenon in which a material becomes more electrically conductive due to the

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12. The absorption coefficient is a function of

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13. diodes are based on

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14. The stimulated emission principle is applied in

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15. Why optical amplifier are necessary in optical communications ?

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16. The number of propagation modes in an optical fibre depends on

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17. One of the sources of transmission losses in the fibre is

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18. In optical fibres fabricated from silica (SiO2) there are three main peaks of attenuation due to absorption caused by

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19. The amount of losses in an optical fibre due to bending depends on the

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20. Optical fibres with a very small diameter core can carry

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