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V Mathivanan
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Full C-Band Tunable V-Cavity-Laser based TOSA and SFP Transceiver Modules Saravanan K; V Mathivanan
Indonesian Journal of Electrical Engineering and Computer Science Vol 9, No 2: February 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v9.i2.pp327-331

Abstract

We report the latest development in tunable transmitter optical sub-assembly (TOSA) and small form-factor pluggable (SFP) transceivers based on simple and compact V-cavity laser (VCL), aiming for low-cost deployment in metro, access and data center networks. The VCL employs a half-wave coupler to achieve high side-mode suppression ratio (SMSR) and the Vernier effect to achieve a wide wavelength tuning range. Full C-band tuning from 1529.55-nm to 1566.31-nm with SMSR above 36 dB is demonstrated. Since the laser does not involve any grating or epitaxial regrowth, and has a simple tuning algorithm, it allows simpler processes for fabrication and testing as compared to other widely tunable laser structures. Compact TOSAs and SFP transceiver modules have been developed for full C-band tuning with up to 93 channels at 50 GHz spacing. Transmission experiments are carried out for direct modulation with data rates from 2.5 Gbps to 8.5 Gbps. The results of reliability tests of the modules are also presented.
Efficient Data Assumption and Optimization of Analog Response Communication Systems Prasanna Moorthi N; V Mathivanan
Indonesian Journal of Electrical Engineering and Computer Science Vol 9, No 2: February 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v9.i2.pp269-270

Abstract

This paper is focused on the examination of connection between the premier remote reason exactitude of transmission information and qualities for driving edge correspondence structures and straightforward data cesium (AFCS) identified with transmission of signs from fundamental sources. It's displayed that the mean sq. oversight of transmission picks information properties of AFCS. Varieties between the cutoff purposes of AFCS thought of as summed up correspondence channel and their forward channel square measure investigated. The new impacts appearing in incredible AFCS and in DCS working near Shannon's cutoff square measure thought of also. Amid this works advanced and essential correspondence frameworks were thought of with none inclinations and no confirmation that the use of simple cesium is frequently less able than modernized correspondence structures had been given start inside the no in this way far off past. The secured comes about unambiguously showed the capacity of simple data cesium to transmit the signs while not committal to composing with to a little degree rate up to the uttermost ranges of the forward control.
Co-Authors Prasanna Moorthi N Saravanan K