Enco transmission via optided voicecal fiber

Abstract

In this work, the RSA (Rivest, Shamir, Adelman) cipher system was implemented by software. The data in form of speech waveform have been recorded by using a computer microphone. These digital speeches were encrypted, and sent via an optical fiber interface card (Fast Ethernet adapter card) at a bit rate of 100 Mbps to another computer, and then it was decrypted .The encrypted data were transmitted through the optical system using a light emitting diode (LED) with a wavelength of 1310 nm and power of (-14 )dBm. A multimode optical fiber was used as a channel and Positive Intrinsic Negative (PIN) photodiode was used as an optical detector.

‫‫‪The power budgets for distances (3, 10, 15, 20, 25) meters have been‬‬ ‫.‪calculated by using the experimental results‬‬ ‫‪In this work, a program was written to support the RSA cipher algorithms‬‬

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