Novel fiber sensor arrays using erbium-doped fiber amplifiers

Abstract

We examine the signal-to-noise ratio (SNR) performance of a novel type of time domain multiplexed sensor arrays in which low gain (1-10 dB) fiber amplifiers are incorporated to compensate for splitting losses between sensors. The system noise figure for passive and amplified sensor arrays is presented, along with expressions to optimize the array parameters for high SNR's. We show that practical amplified sensor arrays exhibit low system noise figures that allow much larger arrays (hundreds of sensors) than passive arrays.

Fiber‐optic sensor active networking with distributed erbium‐doped fiber and Raman amplification

“…One of the most straightforward applications of optical amplifiers in sensor networking would be their use as loss-compensating devices in the form of either inline amplifiers, preamplifiers (before the detector), or power amplifiers (immediately after the light source). The use of optical amplification in the distribution topology has been theoretically proposed to increase the number of sensors up to some hundreds, while maintaining fairly good signal-to-noise ratios for all the sensors in the structure [2,10,26,36].…”

Optical properties of highly Er3+-doped sodium–aluminium–phosphate glasses for broadband 1.5μm emission

“…Rare earth co-doped fluoride and tellurite glasses have shown ASE with considerably extended bandwidth, where the emission broadness arises due to inter-ion energy transfer. By and large, the suitability of rare earth doping and the proper choice of glass matrix are still unclear [1][2][3][4][5].…”

Optical properties of Er3+ doped alkali chlorophosphate glasses for optical amplifiers

“…Quite recently, rareearth co-doped fluride and tellurite glasses have shown ASE with considerably extended bandwidth, where the emission broadness arises due to inter-ion energy transfer. By and large, the suitability of rare-earth doping and proper choice of glass matrix is still unclear [1][2][3][4][5].…”