ECE_437_Lab2_sp10 - ECE 437 Fiber and Integrated Optics:...

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Read this entire document before starting the laboratory session. The laboratory reports should be clear, concise and written in good English. Answer all of the questions asked throughout the experiment and at the end. Feel free to contact Howard with any questions you may have. The laboratory sessions are not difficult. The demonstrations performed in the lab in conjunction with the instructions herein contained should be more than sufficient for each team to complete the experiments without any difficulty. Every team member should learn and put to practice all of the techniques. NEVER STARE AT THE LASER BEAM – ESPECIALLY NOW THAT YOU ARE WORKING WITH INVISIBLE RADIATION! Even at low power, laser light can still be dangerous. Some of the equipment in the laboratory is very expensive and sensitive. Please be careful, and do not lean on these devices nor put anything unnecessary on them. There is a webcam attached to the data acquisition computer. The webcam is used to take snapshots at different stages of the experiment, which will be included in the report. You may want to bring a flash drive to save the webcam pictures. ECE 437 Fiber and Integrated Optics: Lab 2 Polarization Measurement of an Optical Fiber 1 March 2010 Report Due Date: TBA 1
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Objectives Investigate and determine polarization effects in a short length of SMF-28 fiber. Equipment – additional parts, available in the laboratory, may be required. Tunable Laser Bare Fiber Adaptor Polarizer, Newport 05P509AR18 M3P029 Quarter wave plate and rotation stage Polarizer Holder Multi-Axis Positioner Polarization Controller Fiber Cleaver Isopropanol Fiber Stripper Newport 818-IR Low-power Detector with Calibration module HeNe laser OD3 filter Mounted (ND Filter) Newport 818-SL Low-power visible wavelength detector Fiber Optics Holders Tweezers Cotton Swabs Bare Fiber Adaptor for SMF-28 Background Polarization The solution of Maxwell's equation leads to the result that the electric and magnetic fields are transverse to the propagation direction of light. As the fields propagate, their amplitudes vary sinusoidally, the spatial and temporal variations of the electric field inducing changes in the spatial and temporal components of the magnetic field and vice-versa. Assume that the beam of light is coming towards you (see picture on the right) and that you are facing the incoming beam. As the beam is coming towards you, if the electric field is oscillating up and down and up and down and … (remember, the light is coming straight at you!) in a linear fashion, then we say that the light is linearly polarized. Light can also be circularly polarized, and even, more generally, elliptically polarized. Generally, light is not polarized, meaning that it does not follow the regular variations of linear, circular or
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ECE_437_Lab2_sp10 - ECE 437 Fiber and Integrated Optics:...

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