Abstract
The transmission of the high data rate and information over the optical fiber is restricted by various dispersion phenomenon which further results into intersymbol interference (ISI). This article proposes two different methodologies for optical fiber deformation aiding vibration monitoring one using the pin diode as a photo-detector device and another manifesting the avalanche photo-detector. The novelty of this article lies in optical signal conversion using photo-detector processing followed by low pass Gaussian filter in order to reduce the extra contortion. This work is approaching electronic dispersion compensation technique (EDC) for compensation of chromatic dispersion at two distinct bit rates of 25 and 30 Gbps over 120 km of single mode fiber. Both the diodes have tested for theory performance using factors like Q-factor, bit error rate and eye height. It is found that pin diode is exhibiting a quality factor of 67.150 and 40.5944 at 25 and 30 Gbps, respectively. When avalanche pin diode is used at the same data rates, quality factor of 73.0240 and 43.3523 are obtained, respectively. Hence, use of avalanche photodiode at high bit rates is utilized and the simulations showed the optimum photo-diode for efficacious dispersion compensation at such a long transmission distance.
Highlights
Fiber obstacles like chromatic dispersion affect high speed optical fiber communication very badly
The transmission of the high data rate and information over the optical fiber is restricted by various dispersion phenomenon resulting into intersymbol interference (ISI)
The work in this paper basically focuses on extracting the optimal photo detector to be used at receiver in order to get the highest q-factor and minimal bit error rate
Summary
Fiber obstacles like chromatic dispersion affect high speed optical fiber communication very badly. The system for transmission of signals should be carefully designed so that minimum distortion of signal occurs while propagating along the optical fiber. Presence of nonlinear factors requires more power, fiber with little or non-zero chromatic dispersion is necessary for the coherent transmission over long distances. Existence of chromatic dispersion is predominant issue in single mode fibers as it deteriorates the signal up to a large extent. The result of this deterioration is popularly known as intersymbol interference (ISI).
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