Feasibility Study of Few Mode Fibers as a Sensor

2018 ◽  
Vol 7 (2) ◽  
pp. 14-30
Author(s):  
Chandana S ◽  
Amulya K L ◽  
Bhavana A M ◽  
Chaithra B ◽  
Chaitra S
Keyword(s):  
Communication Systems ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Physiological Parameters ◽  
Physiological Parameter ◽  
Sensing Element ◽  
Interference Spectrum ◽  
Optical Communication Systems ◽  
Linearly Polarized ◽  
Novel Concept

This article describes how few mode fiber (FMF) has found its applications in optical communication systems. We report a novel concept of sensing physiological parameters using FMF, which utilizes Space Division Multiplexing technology (SDM) where SDM supports multiple modes/ paths of fixed bandwidth channels which increases the data carrying capacity in an optical fiber. Here we have considered two linearly polarized (LP) modes namely LP01 and LP11. A segment of FMF is used as sensing element, where it is spliced between two segments of single mode fiber (SMF). The intermodal interference between LP01 mode and LP11 mode of FMF provides an interference spectrum which is sensitive to change in physiological parameters applied on FMF. Hence any change in physiological parameter results to shift in wavelength in interference spectrum which makes FMF as a sensor

The Engagement of Hybrid Ultra High Space Division Multiplexing with Maximum Time Division Multiplexing Techniques for High-Speed Single-Mode Fiber Cable Systems

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
I. S. Amiri ◽  
P. G. Kuppusamy ◽  
Ahmed Nabih Zaki Rashed ◽  
P. Jayarajan ◽  
M. R. Thiyagupriyadharsan ◽  
...  
Keyword(s):  
Communication Systems ◽  
High Speed ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Design Parameters ◽  
Control Parameters ◽  
Data Rates ◽  
Fiber Optic Communication ◽  
High Space ◽  
Optic Communication

AbstractHigh-speed single-mode fiber-optic communication systems have been presented based on various hybrid multiplexing schemes. Refractive index step and silica-doped germanium percentage parameters are also preserved during their technological boundaries of attention. It is noticed that the connect design parameters suffer more nonlinearity with the number of connects. Two different propagation techniques have been used to investigate the transmitted data rates as a criterion to enhance system performance. The first technique is soliton propagation, where the control parameters lead to equilibrium between the pulse spreading due to dispersion and the pulse shrinking because of nonlinearity. The second technique is the MTDM technique where the parameters are adjusted to lead to minimum dispersion. Two cases are investigated: no dispersion cancellation and dispersion cancellation. The investigations are conducted over an enormous range of the set of control parameters. Thermal effects are considered through three basic quantities, namely the transmission data rates, the dispersion characteristics, and the spectral losses.

scholarly journals Correlation and Power Distribution of Intercore Crosstalk Field Components of Polarization-Coupled Weakly Coupled Single-Mode Multicore Fibres

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 191
Author(s):  
José A. P. Morgado ◽  
Adolfo V. T. Cartaxo
Keyword(s):  
Power Distribution ◽  
Communication Systems ◽  
Single Mode ◽  
Coupled Mode ◽  
Weakly Coupled ◽  
Wide Range ◽  
Optical Communication Systems ◽  
The Mean ◽  
Distribution Of Power ◽  
Linear Propagation

The correlation and power distribution of intercore crosstalk (ICXT) field components of weakly coupled multicore fibers (WC-MCFs) are important properties that determine the statistics of the ICXT and ultimately impact the performance of WC-MCF optical communication systems. Using intensive numerical simulation of the coupled mode equations describing ICXT of a single-mode WC-MCF with intracore birefringence and linear propagation, we assess the mean, correlation, and power distribution of the four ICXT field components of unmodulated polarization-coupled homogeneous and quasi-homogeneous WC-MCFs with a single interfering core in a wide range of birefringence conditions and power distribution among the field components at the interfering core input. It is shown that, for homogeneous and quasi-homogeneous WC-MCFs, zero mean uncorrelated ICXT field components with similar power levels are observed for birefringence correlation length and birefringence beat length in the ranges of 0.5m,10m and 0.1m,10m, respectively, regardless of the distribution of power between the four field components at the interfering core input.

Progress towards heterodyne-type single-mode fiber communication systems

1981 ◽  
Vol 17 (6) ◽  
pp. 897-906 ◽  
Author(s):  
F. Favre ◽  
L. Jeunhomme ◽  
I. Joindot ◽  
M. Monerie ◽  
J.C. Simon
Keyword(s):  
Communication Systems ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Fiber Communication

scholarly journals MOCVD Growth and Fabrication of High Power MUTC Photodiodes Using InGaAs-InP System

2015 ◽  
Vol 2015 ◽  
pp. 1-6
Author(s):  
Nandan Singh ◽  
Charles Kin Fai Ho ◽  
Guo Xin Tina ◽  
Manoj Kumar Chandra Mohan ◽  
Kenneth Eng Kian Lee ◽  
...  
Keyword(s):  
Communication Systems ◽  
Single Mode ◽  
Fast Response ◽  
Antireflection Coating ◽  
Single Mode Fiber ◽  
Device Fabrication ◽  
Group V ◽  
Mocvd Growth ◽  
Diode Ideality Factor ◽  
Processing Techniques

We report charge-compensated modified uni-traveling-carrier photodiodes (MUTC-PDs) with high photocurrent and fast response, grown using liquid group-V precursor, in an AIXTRON MOCVD system. The liquid group-V precursors involve less toxicity with better decomposition characteristics. Device fabrication is completed with standard processing techniques with BCB passivation. DC and RF measurements are carried out using a single mode fiber at 1.55 μm. For a 24-μm-diameter device (with diode ideality factor of 1.34), the dark current is 32.5 nA and the 3-dB bandwidth is ≫20 GHz at a reverse bias of 5 V, which are comparable to the theoretical values. High photocurrent of over 150.0 mA from larger diameter (>60 μm) devices is obtained. The maximum DC responsivity at 1.55 μm wavelength is 0.51 A/W, without antireflection coating. These photodiodes play a key role in the progress of the future THz communication systems.

Research on Relationship of Polarization and Rayleigh Backscatter in Bidirectional Fiber Communication Systems

2013 ◽  
Vol 312 ◽  
pp. 625-630
Author(s):  
Yan Hong Wang ◽  
Gao Wang ◽  
Ji Liu
Keyword(s):  
Communication Systems ◽  
Polarization State ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Light Polarization ◽  
Polarization Property ◽  
Orthogonal Polarization ◽  
Fiber Communication ◽  
Order Of Magnitude ◽  
Relationship Of

In this paper, the general theory and polarization property of RB in single mode fiber is discussed. According to the theoretical analysis results, the bidirectional carrying system with a polarization rotating device for analog radio frequency (RF) signal is set up. The relationship of the system CRN and the different polarization state by the polarization rotating device is studied. The results show that the RB light polarization state of backward fiber end can keep to perpendicular to that of forward light when backward lights polarization is orthogonal forward lights polarization. So utilizing orthogonal polarization method for decreasing CRN can be carried on. The system performance is analyzed by simulation. The simulation results show that CRN of the bidirectional communication system on a single mode fiber can be inhibited by using the method and RB light can decrease by an order of magnitude.

scholarly journals Thin Diamond Film on Silicon Substrates for Pressure Sensor Fabrication

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3697
Author(s):  
Stefano Salvatori ◽  
Sara Pettinato ◽  
Armando Piccardi ◽  
Vadim Sedov ◽  
Alexey Voronin ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
Electromagnetic Interference ◽  
Chemical Vapor ◽  
High Hardness ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Silicon Substrates ◽  
Sensing Element ◽  
Optoelectronic System ◽  
Sensor Fabrication

Thin polycrystalline diamond films chemically vapor deposited on thinned silicon substrates were used as membranes for pressure sensor fabrication by means of selective chemical etching of silicon. The sensing element is based on a simple low-finesse Fabry–Pérot (FP) interferometer. The FP cavity is defined by the end-face of a single mode fiber and the diamond diaphragm surface. Hence, pressure is evaluated by measuring the cavity length by an optoelectronic system coupled to the single mode fiber. Exploiting the excellent properties of Chemical Vapor Deposition (CVD) diamond, in terms of high hardness, low thermal expansion, and ultra-high thermal conductivity, the realized sensors have been characterized up to 16.5 MPa at room temperature. Preliminary characterizations demonstrate the feasibility of such diamond-on-Si membrane structure for pressure transduction. The proposed sensing system represents a valid alternative to conventional solutions, overcoming the drawback related to electromagnetic interference on the acquired weak signals generated by standard piezoelectric sensors.

High-power InGaAsP edge-emitting LEDs for single-mode optical communication systems

1985 ◽  
Vol 21 (17) ◽  
pp. 730 ◽  
Author(s):  
R. Olshansky ◽  
D. Fye ◽  
J. Manning ◽  
M. Stern ◽  
E. Meland ◽  
...  
Keyword(s):  
Optical Communication ◽  
High Power ◽  
Communication Systems ◽  
Single Mode ◽  
Optical Communication Systems
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