Nt1310 Unit 7 Assignment 1
Baldeo Persaud
NT1310
Unit 7 Assignment 1: Refraction, Reflection and Optics
A good example of refraction of light and reflection of light is a rainbow. Sunlight enters the rain droplet at a specific angle and the rain droplet separates the white light into many different colors. This angle is a fixed measurement between your eye and the sun. What color is refracted depends upon the critical angle, which is the angle the sunlight strikes the back of the rain droplet. Red light bends the least while violet light bends the most all the other colors bend at an angle that is between the two. Each rain droplet reflects all colors at a given point and time, but only one color comes back to your eye, requiring millions of rain droplets to create a rainbow. As the rain droplets fall …show more content…
through the sky, the colors of the spectrum being reflected and refracted are constantly changing.
Chromatic Dispersion is only a factor in high-speed (ie.
Gigabit) single-mode communications links. Chromatic dispersion is the effect of having a wide spectrum of light as the single-mode light source, and as result have light rays of traveling at slightly different speeds due to differing wavelengths. The differences in light ray speeds result in the equivalent of timing jitter at the receiver. Chromatic dispersion is caused by waveguide dispersion and material dispersion.
Modal Dispersion is only a factor in multi-mode communication links. Modal dispersion is the optical equivalent of timing jitter, where light signals of the same bit travel different paths along the fiber and cause an inability to accurately differentiate bits. Modal dispersion is a function of data rate. Modal dispersion is caused by different path lengths of the fibers in the cable.
Attenuation can be losses attributed to microscopic and macroscopic impurities in the fiber material and structure, which cause absorption and scattering of the light signal. Attenuation is a function of the wavelength, and the loss is usually stated in dB/km. Attenuation can be caused by improper connections, bend radius and
splicing.
References
2. (n.d.). 2. Retrieved November 3, 2014, from http://www.invocom.et.put.poznan.pl/~invocom/C/P1-9/swiatlowody_en/p1-1_3_3.htm
Baxter, M., & Lindley, D. (2014, September 2). What Is a Fiber-Optic Attenuator?. WiseGeek. Retrieved November 3, 2014, from http://www.wisegeek.com/what-is-a-fiber-optic-attenuator.htm
Rainbow Formation. (n.d.). Rainbow Formation. Retrieved November 3, 2014, from http://www.physicsclassroom.com/class/refrn/u14l4b.cfm
 . (n.d.). The FOA Reference For Fiber Optics. Retrieved November 3, 2014, from http://www.thefoa.org/tech/ref/testing/test/CD_PMD.html
NT1310
Unit 7 Assignment 1: Refraction, Reflection and Optics
A good example of refraction of light and reflection of light is a rainbow. Sunlight enters the rain droplet at a specific angle and the rain droplet separates the white light into many different colors. This angle is a fixed measurement between your eye and the sun. What color is refracted depends upon the critical angle, which is the angle the sunlight strikes the back of the rain droplet. Red light bends the least while violet light bends the most all the other colors bend at an angle that is between the two. Each rain droplet reflects all colors at a given point and time, but only one color comes back to your eye, requiring millions of rain droplets to create a rainbow. As the rain droplets fall …show more content…
through the sky, the colors of the spectrum being reflected and refracted are constantly changing.
Chromatic Dispersion is only a factor in high-speed (ie.
Gigabit) single-mode communications links. Chromatic dispersion is the effect of having a wide spectrum of light as the single-mode light source, and as result have light rays of traveling at slightly different speeds due to differing wavelengths. The differences in light ray speeds result in the equivalent of timing jitter at the receiver. Chromatic dispersion is caused by waveguide dispersion and material dispersion.
Modal Dispersion is only a factor in multi-mode communication links. Modal dispersion is the optical equivalent of timing jitter, where light signals of the same bit travel different paths along the fiber and cause an inability to accurately differentiate bits. Modal dispersion is a function of data rate. Modal dispersion is caused by different path lengths of the fibers in the cable.
Attenuation can be losses attributed to microscopic and macroscopic impurities in the fiber material and structure, which cause absorption and scattering of the light signal. Attenuation is a function of the wavelength, and the loss is usually stated in dB/km. Attenuation can be caused by improper connections, bend radius and
splicing.
References
2. (n.d.). 2. Retrieved November 3, 2014, from http://www.invocom.et.put.poznan.pl/~invocom/C/P1-9/swiatlowody_en/p1-1_3_3.htm
Baxter, M., & Lindley, D. (2014, September 2). What Is a Fiber-Optic Attenuator?. WiseGeek. Retrieved November 3, 2014, from http://www.wisegeek.com/what-is-a-fiber-optic-attenuator.htm
Rainbow Formation. (n.d.). Rainbow Formation. Retrieved November 3, 2014, from http://www.physicsclassroom.com/class/refrn/u14l4b.cfm
 . (n.d.). The FOA Reference For Fiber Optics. Retrieved November 3, 2014, from http://www.thefoa.org/tech/ref/testing/test/CD_PMD.html