Abstract
Abstract The study has outlined grating index difference (GID) and grating order based distributed feedback laser effects on coarse wavelength division multiplexing optical fiber systems. Signal amplitude level (SPL), noise signal level are measured accurately based on various grating order of distributed feedback laser. Max. signal power (MSP), noise signal power (NSP) are also measured along the variations of frequency spectrum related to spectral wavelength and bit period time versus GID variations. The optimum signal power level and minimum noise power level, maximum SPL, minimum SPL are achieved with 0.1% GID and grating order of unity.
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