Optical fiber data bus modulation techniques for military avionics

This paper presents a possible simulation of negative effects in the optical transmission medium and an analysis for the utilization of different signal processing techniques at the optical signal transmission. An attention is focused on the high data rate signal transmission in the optical fiber influenced by linear and nonlinear environmental effects presented by the prepared simulation model. The analysis includes possible utilization of OOK, BPSK, DBPSK, BFSK, QPSK, DQPSK, 8PSK, and 16QAM modulation techniques together with RS, BCH, and LDPC encoding techniques for the signal transmission in the optical fiber. Moreover, the prepared simulation model is compared with real optical transmission systems. In the final part, a comparison of the selected modulation techniques with different encoding techniques and their implementation in real transmission systems is shown.

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PON-based bus-type optical fiber data bus

Seventh Symposium on Novel Photoelectronic Detection Technology and Applications ◽

10.1117/12.2585878 ◽

2021 ◽

Author(s):

Haidong Xue ◽

Qi Wu ◽

Hongbo Yin ◽

Yujie Bai ◽

lin xiaojuan ◽

...

Keyword(s):

Optical Fiber ◽

Data Bus

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Performance of Carrier- Suppressed Return-to-Zero(CSRZ), Duo binary Return-to-Zero(DRZ) and Modified Duo binary Return-to-Zero(MDRZ) Modulation Methods in WDM-PON Systems

International Journal of Soft Computing and Engineering - Regular Issue ◽

10.35940/ijsce.a3452.0710120 ◽

2020 ◽

Vol 10 (1) ◽

pp. 22-25

Keyword(s):

Optical Fiber ◽

Fiber System ◽

Modulation Formats ◽

Modulation Format ◽

Modulation Techniques ◽

Fiber Optic Technology ◽

Modulation Methods ◽

The Right ◽

Right Order ◽

Wdm Pon

In this paper the different modulation techniques used in fiber optic technology are compared to check which one has the better bit error rate (BER). There are a number of different modulation techniques used in WDN-PON systems but here the comparison is made among carrier-suppressed return-to-zero (CSRZ), duobinary return-to-zero (DRZ) and modified duobinary return-to-zero (MDRZ) modulation. The comparison to determine which is better is made my performing simulations in OptiSystem version 17 software. OptiSystem 17 is the current version of the software at the time the simulations were being carried out. In the OptiSystem software an optical fiber system is simulated from transmitter all the way to receiver. In the experiment when checking the performance of the different modulation formats, the optical fiber and the receiver are left unchanged and only the transmitter part is changed according to the modulation format being simulated at that particular instance. The modulation in the transmitter is done by using proper components from the OptiSystem library which when organized in the right order will give out a signal modulated in a certain format by the time it is fed into the optical fiber. Knowing the performance of modulation can help in WDM PON where the network gets to use passive components as it goes to user. Since no active amplification or correction equipment is used in WDM-PON, therefore using the format with the best performance can help with performance of overall system.

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