Evaluation and calculations of modes resonant cantilever for laser optical fiber assembly

Biosensors depend on cantilevers have developed a promising tool for detecting biomedical, optical laser communication and many fields of interactions with high accuracy. We modeled the operation of cantilevers with two magnetic and coil using Ansys program. This simulation technique can capably be used to select the appropriate design and dimensions of cantilever with the geometry of system. The primary main of the magnetic design is to improve the geometry of the coil and shape to yield a highly uniform for 3D of optical fiber includes Silica Glass and Nickel cantilever, two magnets and one coil that apply to force on the cantilever cylinder is using as a cantilever in the designing of this case.In conclusion,resonant frequency( tuning applying cantilivier presented in the resracher have larger variable range by using 2-magnets with the coil.However,the adjusting of the system and changing the deminsions.Resolutions to this problematic contain tuning the modes of resonant frequency to produce by cantilivier with 2-magnets and coil when the signal pass from laser source. Based on these simulations and characterization results, the proposed assembly can be a good applicant for evolving a low price, high material platform for many biological, laser optical fiber, communication, machine learning, biosensors and biomedical applications.

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Resonance frequency analysis of laser optical fiber based on microcantilever

International Journal of Electrical and Computer Engineering (IJECE) ◽

10.11591/ijece.v9i4.pp3090-3099 ◽

2019 ◽

Vol 9 (4) ◽

pp. 3090

Author(s):

Mohanad Aljanabi

Keyword(s):

Optical Fiber ◽

Resonant Frequency ◽

Resonance Frequency ◽

Frequency Analysis ◽

Optical Fiber Communication ◽

Laser Source ◽

Resonance Frequency Analysis ◽

Magnetic Current ◽

Receiver System ◽

Force Calculation

The normal frequency of smart beams was originated utilizing FEM [Ansys and Comsol] code for first five modes by varying the position of actuator from the fixed end of the structure, and it has a suitable arrangement with analytically found the standard frequency. This paper includes learning a resonance frequency analysis of laser optical fiber based on microcantilever of designing magnetic actuator using Ansys and Comsol simulation. The design of optical fiber includes Nickel cantilever, two magnets and one coil that apply to force on the cantilever. After the current flows in the coil domain, the shape of microcantilever will be deformed. It will move to z- direction that depends on the force direction. Two methods including, Comsol Multiphysics, Ansys and analytical equations have been utilized to calculate the resonance frequency, current and force values. The simulation results include calculating the current (magnetic current density) and effects of the magnetic field of the coil on the cantilever (force calculation). Utilizing this method is to limit faults(errors) of optical fiber laser between transmitter and receiver system (detection system) for any time of cutting coil when the signal of a laser passes through the coil. In conculsions, resonant frequency (f_n) tuning using cantilivier presented in the resrach have larger variable range by using simulations. However,the adjusting of the system and changing the deminsions.Resolutions to this problematic contain tuning the modes of resonant frequency to produce by cantilivier with 2-magnets and coil when the signal pass from laser source. Based on these simulations and characterization results, the proposed assembly can be a good applicant for evolving a low price, high material platform for many biological, laser optical fiber, communication, machine learning, biosensors and biomedical applications.

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Comparison between Direct and Coherent Optical Communication System

Baghdad Science Journal ◽

10.21123/bsj.8.2.479-484 ◽

2011 ◽

Vol 8 (2) ◽

pp. 479-484

Author(s):

Baghdad Science Journal

Keyword(s):

Optical Fiber ◽

Communication System ◽

Direct Detection ◽

Optical Fiber Communication ◽

Optical Signal ◽

Coherent Detection ◽

Laser Source ◽

System Quality ◽

Fiber Communication ◽

Optical Fiber Communication System

The work in this paper focuses on the system quality of direct and coherent communication system for two computers. A system quality is represented by Signal to Noise ratio (SNR) and Bit Error Rate (BER). First part of the work includes implementation of direct optical fiber communication system and measure the system quality .The second part of the work include implementation both the( homodyne and heterodyne)coherent optical fiber communication system and measure the system quality . Laser diode 1310 nm wavelength with its drive circuit used in the transmitter circuit . A single mode of 62.11 km optical fiber is selected as transmission medium . A PIN photo detector is used in the receiver circuit. The optical D-coupler was used to combine the optical signal that come from transmitter laser source with optical signal of laser local oscillator at 1310/1550 nm to obtain coherent detection . Results show that for direct detection the SNR and the BER (28.5 dB, 9.64x10-8,) respectively, while for homodyne and heterodyne coherent detection , the SNR(94.36,97.71)dB and the BER are (1.32x10-22,2.43x10-23) at maximum optical fiber length at 62.11 km. Results show that the homodyne and heterodyne detection are better than direct detection because the large output SNR and low BER of the received signal.

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High-speed integrated multiwavelength laser source for WDM optical-fiber communication systems

Optical Fiber Communications Conference ◽

10.1364/ofc.1995.fc1 ◽

1995 ◽

Author(s):

M. Asghari ◽

B. Zhu ◽

I. H. White ◽

C. P. Seltzer ◽

C. Nice ◽

...

Keyword(s):

Optical Fiber ◽

Communication Systems ◽

High Speed ◽

Optical Fiber Communication ◽

Laser Source ◽

Fiber Communication ◽

Multiwavelength Laser

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Design and Implementation for optical fiber communication system using frequency shift coding

Baghdad Science Journal ◽

10.21123/bsj.7.3.1226-1231 ◽

2010 ◽

Vol 7 (3) ◽

pp. 1226-1231

Author(s):

Baghdad Science Journal

Keyword(s):

Optical Fiber ◽

Frequency Shift ◽

Signal To Noise Ratio ◽

Optical Power ◽

Single Mode ◽

Optical Fiber Communication ◽

Laser Source ◽

System Quality ◽

Power Budget ◽

Fiber Communication

In this research, optical communication coding systems are designed and constructed by utilizing Frequency Shift Code (FSC) technique. Calculations of the system quality represented by signal to noise ratio (S/N), Bit Error Rate (BER),and Power budget are done. In FSC system, the data of Nonreturn- to–zero (NRZ ) with bit rate at 190 kb/s was entered into FSC encoder circuit in transmitter unit. This data modulates the laser source HFCT-5205 with wavelength at 1310 nm by Intensity Modulation (IM) method, then this data is transferred through Single Mode (SM) optical fiber. The recovery of the NRZ is achieved using decoder circuit in receiver unit. The calculations of BER and S/N for FSC system at maximum fiber length at 61.2 km equal to 2.30551×10-12, 47.88526 dB respectively. The power budget for FSC system was calculated to be 29 dB. Results show that the BER increases when the received optical power decreases the due to increase of the optical fiber length61.2 km. while S/N decreases. The optical power budget increases as the transmitted optical power increases.

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