Across
- 2. is used to describe unwanted components of an electrical signal
- 5. What generates a light beam of a specific visible frequency
- 7. Which type of laser is the simplest to modulate directly by changing its excitation
- 9. The loss in signal power as light travels down a fiber is called
- 10. monochromatic coherent source
- 12. Which theory states that the light wave behaves as if it consists of many tiny particles
- 13. When a beam of light enters one medium from another, which quantity will not change
- 16. The inner portion of the fiber cable is called
- 17. is a set of devices connected by a communication links
- 18. Which of the following is used as an optical receiver in fiber optics communications
- 19. is lasing medium
Down
- 1. Is a non-coherent light source foe optical communications system
- 3. The band of light wavelengths that are too long to be seen by the human eye
- 4. optics A dielectric waveguide for the propagation of electromagnetic energy at light frequencies
- 6. Longitudinal waves do not exhibit
- 8. spreading of light pulses
- 11. What is a specific path the light takes in an optical fiber corresponding to a certain angle and number of reflection
- 14. the core is surrounded by a solid dielectric --------
- 15. -----can be a computer,printer,or any other device capable of sending and receiving data generated by other device capable of sending &receiving data generated by other nodes on the network