ACTIVE TEMPERATURE SENSOR USING SINGLE-MODE OPTICAL FIBER

Single Mode Optical Fiber in Rof System Using DWDM

Performance analysis was carried out to find the effect of crosstalk in a WDM system. Firstly, analysis of BER was carried out without crosstalk. Then analysis of BER with crosstalk was done. Using equation for crosstalk, number of channels was plotted using matlab. System parameters were optimized for a particular crosstalk. Objective of the thesis work Performance Analysis is carried out to f...

Optical fiber acoustic sensor utilizing mode-mode interference.

A method for detecting sound using a single step-index multimode fiber is presented. The detected signal results from differences in acoustically induced phase shifts between two different waveguide modes propagating in the fiber. The relative sensitivity of this technique compared with a two-path interferometer was experimentally determined and agreed with that calculated using the fiber param...

Single - Crystal Sapphire Optical Fiber Sensor Instrumentation

Single Mode Air-Clad Single Crystal Sapphire Optical Fiber

The observation of single mode propagation in an air-clad single crystal sapphire optical fiber at wavelengths at and above 783 nm is presented for the first time. A high-temperature wet acid etching method was used to reduce the diameter of a 10 cm length of commercially-sourced sapphire fiber from 125 micrometers to 6.5 micrometers, and far-field imaging provided modal information at interval...

New Design of Optical Filters Based on Single Mode-Multimode-Single Mode Fiber Structure for Optical Fiber Communication Systems

In this paper, a design of optical filters based on single mode-multimode-single mode fiber structure (SMS) is demonstrated. The multimode interference effect can be utilized to design wavelength-selective devices with high extinction ratio. The proposed optical filters are realized by using standard optical fibers. Two optical filters are designed to operate with wave division multiplexing (WD...