Influence of optical filtering on transmission capacity in single mode fiber communications

Sudhakar, M. Venkata; Reddy, Y. Mallikarjuna; Rao, B. Prabhakara

doi:10.1007/s12200-014-0426-2

Cited by 3 publications

(2 citation statements)

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“…The following factors of the optical system are used for the simulations: VCSEL specifications [19] are used for the purpose of the calculation, the gain of the optical amplifier is set to 100 dB, and the noise figure is set to 4 dB. The range is 750 Km, the system running wavelength is 1550 nm, the transmission and reception telescopes are 15 cm in diameter, the error related to the mis-point is 1 radian, and the optics of transceivers have a 0.9 efficiency.…”

Section: Resultsmentioning

confidence: 99%

Implementation of 23 Gbps optical wireless link for 750 km inter-aircraft communications

Sudhakar

G.K

2023

Eng. Res. Express

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Optical device research and development is crucial for the implementation of miniaturized wireless optical transmission systems that are capable of transmitting large amounts of data at fast speeds. This work presents the design and evaluation of an optical link for the inter-aircraft interconnects. At the transmitter, the vertically cavity surface emission laser (VCSEL) is used to generate a directly modulated non-return to zero (NRZ) signal. In the receiver, direct detection and Gaussian low-pass filtering are used. The system's performance is evaluated and compared with and without the use of filtration at the detector. BER, sensitivities, and data transmission capability are used to evaluate the performance of optical wireless systems using optisystem software. The range and data rate are enhanced 9-fold and 4-fold, respectively, in comparison to earlier schemes. The results presented show a transmission range of 750 km at a 23 Gbps data rate with a BER of 10-29.

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Section: Resultsmentioning

confidence: 99%

Implementation of 23 Gbps optical wireless link for 750 km inter-aircraft communications

Sudhakar

G.K

2023

Eng. Res. Express

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“…Optical spectrums at MZI output are much compact in comparison with VCSEL output spectrum this results dispersion tolerance in SMF. The proposed system performance is compared with narrow optical filtering (NOF) [35] scheme. NOF scheme comprises of pulse generator and optical filter along with VCSEL in transmitter.…”

Section: Resultsmentioning

confidence: 99%

Effect of Optical Filtering for Error-free Transmission in Optical Networks

Sudhakar¹,

Reddy²,

Rao³

2014

IJCA

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This paper presents a new approach to maximize the dispersion-limited distance of vertical cavity surface emitting lasers (VCSELs) operating at 1550.127 nm with 10 Gb/s bit rate. Optical non return to zero (NRZ) signal is generated by using an optical band pass filter (OBPF) along with MachZehnder interferometer (MZI) at the output of VCSEL. A third order super-Gaussian and fourth order Butterworth filters are used as optical filters. The dependence of bit error rate (BER), the eye opening and transmission distance on variations in the optical filter and MZI parameters is investigated. The numerical results signify that with the proposed scheme one can enhance the single mode fiber (SMF) link-length to 127 km in the absence of electrical or optical dispersion compensation methods. Results are compared between the proposed method and transmitters implemented with VCSEL diode. General TermsOptical communications.

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