Optical Fiber Sensors Lecture 2 Quiz

Optical Sensors Lecture

• The lecture focuses on different types of optical sensors and their applications.

Physical Parameters and Light Properties

• Physical parameters such as temperature, pressure, and vibration can be detected using the properties of light, including amplitude, phase, and polarization.

Amplitude Modulators

• Amplitude Modulators sensors are commonly referred to as Intensity Modulated Sensors.

Electric Field Amplitude and Intensity Modulated Sensors

• Electric field amplitude is directly related to intensity modulated sensors, as changes in amplitude affect the intensity of the light.

Television Analogy

• The lecture uses the example of a kid playing with a television to illustrate how an optical sensor can capture information about gestures.

Optical Fiber Sensors

• The primary aim of the lecture on Optical Fiber Sensors is to discuss their applications and types.

Sensor Purpose and Application

• The purpose of an optical sensor in the described application is to capture information about gestures.
• The optical sensor is used in an application involving gesture recognition.

Infrared Radiation and Sensor

• The infrared source in the application uses near-infrared radiation, which is different from visible radiation.
• The infrared sensor captures information about gestures by detecting changes in the scattered near-infrared radiation.

CCD Array and Scattering

• The main purpose of using a CCD array is to capture the scattered near-infrared radiation and create an image of the object.
• Scattering only a few dots from an object allows for the creation of a pattern of dots.
• The fine features of the pattern of dots allow for the recognition of gestures.

Gesture Recognition

• Gesture recognition involves the detection and interpretation of gestures using the captured information about the scattered near-infrared radiation.