Related Experiment Video
Updated: Jul 6, 2026
09:03
A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
Published on: January 7, 2019
Fiber-optic voltage sensor based on a Bi12TiO20 crystal.
V N Filippov1, A N Starodumov, Y O Barmenkov
1Centro de Investigaciones en Optica, AC, Loma del Bosque No 115, Col Lomas del Campestre, Apartado Postal 1-948, 37150 Leon, GTO, Mexico. valera@foton.cio.mx
Applied Optics
|March 14, 2008
Summary
This study introduces an improved fiber-optic voltage sensor using a bismuth titanate crystal and a backreflecting prism. The novel design enhances sensitivity and temperature stability for accurate voltage measurements.
Area of Science:
- Optoelectronics
- Materials Science
- Sensor Technology
Background:
- Fiber-optic sensors offer non-intrusive voltage measurement capabilities.
- Pockels effect-based sensors require stable performance across varying temperatures.
- Bismuth titanate (Bi(12)TiO(20)) is a suitable electro-optic crystal for sensor applications.
Purpose of the Study:
- To develop a fiber-optic voltage sensor with enhanced sensitivity and temperature stability.
- To investigate the performance of a backreflecting prism as a phase-retarding element.
- To compare the temperature characteristics of a glass backreflecting prism with a quarter-wave plate.
Main Methods:
- Utilized the longitudinal Pockels effect in a Bi(12)TiO(20) crystal.
- Incorporated a special backreflecting prism as a phase-retarding element.
- Performed comparative analysis of temperature properties between the prism and a quarter-wave plate.
Main Results:
- The sensor demonstrated excellent temperature stability of +/-1.5% over a -20°C to 60°C range.
- Achieved a sensitivity of 0.145% per 1 V(rms) at 850 nm.
- The backreflecting prism improved sensor performance without additional temperature control.
Conclusions:
- The developed fiber-optic voltage sensor offers high sensitivity and superior temperature stability.
- The backreflecting prism is an effective component for enhancing Pockels effect sensor performance.
- This sensor technology is suitable for applications requiring precise voltage monitoring under diverse thermal conditions.
Related Concept Videos
01:22Bipolar Junction Transistor
Bipolar Junction Transistors (BJTs) are essential elements in electronic circuits, playing a crucial role in the functionality of amplifiers, memories, and microprocessors. These transistors can be designed as NPN or PNP based on their doping patterns. They consist of three layers: the emitter, base, and collector. The configuration of these layers and their respective doping levels—with N-type or P-type impurities—define the transistor's type and its operational characteristics.
The structure...
The structure...
01:20Diode: Forward bias
In semiconductor devices, diodes play a crucial role in directing current flow, and its operation is primarily categorized into forward bias and reverse bias. A diode is said to be forward-biased when its p-type region is connected to the positive terminal of a battery and its n-type region is linked to the negative terminal. This configuration reduces the potential barrier within the diode, allowing current to flow easily from the p to the n-type region.
The behavior of a diode in forward bias...
The behavior of a diode in forward bias...
01:29Field Effect Transistor
Field-effect transistors (FETs) are integral to electronic circuits and distinguished by their three-terminal setup: the gate, drain, and source. These transistors operate as unipolar devices, which utilize either electrons or holes as charge carriers, in contrast to bipolar transistors, which use both types of carriers. The primary function of the FET is to modulate the flow of these carriers from the source to the drain through a channel. The voltage difference between the gate and source...
01:23Voltage Doubler Circuit
A voltage doubler circuit integrates two main components: a clamping section and a rectifier section. The clamping section consists of a capacitor (C1) and a diode (D1), whereas the rectifier section is equipped with another diode (D2) and capacitor (C2). This circuit produces an output voltage with twice the amplitude of the sinusoidal input voltage.
02:26Photoelectric Effect
When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
01:16Biasing of P-N Junction
The operation of a p-n junction diode involves various biasing conditions, including forward bias, reverse bias, and equilibrium.
In equilibrium, no external voltage is applied across the p-n junction. The depletion region is formed at the junction interface due to the diffusion of carriers, which leaves behind charged dopants, acceptors on the p-side, and donors on the n-side. These immobile charges create an electric field that prevents further diffusion of carriers. The related energy band...
In equilibrium, no external voltage is applied across the p-n junction. The depletion region is formed at the junction interface due to the diffusion of carriers, which leaves behind charged dopants, acceptors on the p-side, and donors on the n-side. These immobile charges create an electric field that prevents further diffusion of carriers. The related energy band...