36 research outputs found
In situ method for power re-equalization of wavelength pulses inside of OCDMA codes
A simple in-situ method to equalize power among individual wavelengths pulses representing two-dimensional wavelength-hopping time-spreading OCDMA code originally generated by a fibre Bragg grating-based OCDMA encoder is presented. Experimental data obtained in a field-based multiuser OCDMA testbed shows that applying this method results in system performance enhancements which was demonstrated by observing improved bit error rate (BER) during the field trials
Generation of Hidden Optical-Polarization: Squeezing and Non-Classicality
A monochromatic double-mode coherent light endowed with orthogonally
polarized photons propagating collinearly is studied in Degenerate Parametric
Amplification. Generation of Hidden Optical- Polarized States is shown by
non-zero values of Index of Hidden Optical-Polarization. Squeezing in HOPS is
demonstrated by recognizing a Squeezing function. The Non-Classical feature of
HOPS is observed by 'degree of Hidden Optical-Polarization' which attains
non-classical value 'greater than unity'. The dynamical nature of Generation,
Squeezing and Non-Classicality are numerically presented.Comment: 14 pages and 02 figure
Interferometric noise characterisation of a 2-D time spreading wavelength Hopping OCDMA networks using FBG encoding/decoding
The results of a range of experimental characterization exercises of interferometric noise (IN) for the case of a representative 2-D time spreading wavelength-hopping (2-D TW) optical code family are presented. Interferometric noise is evaluated at a data rate of 2.5 Gbps within an OCDMA network emulation test bed established utilising fibre Bragg grating encoders/decoders. The results demonstrate that this form of noise introduces significant system power penalties and must be taken into consideration in any OCDMA network designs and implementations
Interferometric noise characterization of a 2-D time-spreading wavelength-hopping OCDMA network using FBG encoding and decoding
The results of a range of experimental characterization exercises of interferometric noise for the case of a representative 2-D time-spreading wavelength-hopping optical code family are presented. Interferometric noise is evaluated at a data rate of 2.5 Gbits/s within an OCDMA network emulation test bed established utilizing fiber Bragg grating encoders/decoders. The results demonstrate that this form of noise introduces significant system power penalties and must be taken into consideration in any OCDMA network designs and implementations