References

Bibliography:

• Woodward, Bill and Emile B. Husson. Fiber Optics and Technicians Installer Study Guide. San Francisco: Sybex, 2005.
• Downing, James. Fiber Optic Communications. Clifton Park: Thomson Delmar Learning, 2004.
• Prakash, Satya. Physics: Vol. 1,2. City: V K Publications, 2008.

Webliography

• https://en.wikipedia.org/wiki/Numerical_aperture
• https://en.wikipedia.org/wiki/Optical_fiber
• https://www.fiberopticstech.com/technical/numerical-aperture/