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Three-dimensional image reconstruction with the application of a wireless device helps in filtering noise during data collection. Control board is used to make sure that one infrared sensor turn ON at a time, due to the possibilities that data reflected is not received to the correct sensor. The entire object is wrapped using black color paper to obtain a stable data, and distance between sensors...
This paper describes the use of multiple Infrared sensors to reconstruct a shape by detecting any changes in sensor displacement when there is an obstacle placed in front of the sensor. Meanwhile, the distance between IR sensors and the obstacle was set at 5 cm to minimize the noise contributed by the reflection of the sensor during data collection. A stepper motor was used in the experimental design...
An efficient fluoride-based thulium-doped fiber amplifier (TDFA) is theoretically demonstrated using a double-pass scheme. A reflector is incorporated in the double-pass TDFA to allow double propagation of the test signal in the gain medium and thus improve the gain of the TDFA. The small signal gain improvement of more than 15dB is obtained in the 1465nm region. A gain as high as 42dB is obtained...
The bending Diameter and depressed cladding erbium doped fiber (DC-EDF) length for single-pass depressed cladding Erbium-Doped Fiber Amplifiers (DC-EDFA) are theoretically optimized by solving differential equations. 22 dB peak gain at 1502 nm wavelength has been obtained with 18 m long DC-EDFA and 16 cm bending diameter.
Gain and noise figure improvements are demonstrated in a shorter wavelength region of double-pass EDFA using a macro-bending approach. The EDF is wound in a small radius to suppress the amplified spontaneous emission at the longer wavelength in order to achieve a high amplification in the shorter wavelength. Gain enhancements of about 12 ~ 14 dB are obtained with macro-bending at wavelength region...
This paper presents an experimental study of the performance characteristics of an S-band single pass and double pass erbium-doped fiber amplifier (EDFA), using depressed cladding erbium-doped fiber (EDF). The depressed cladding EDF is essentially used to suppress the amplified spontaneous emission (ASE) at the longer wavelength to achieve high amplification in the S-band region. Both single pass...
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