Showing papers on "Dispersion-shifted fiber published in 2021"
3 citations
16 Jul 2021
TL;DR: The migration of present data network to the IoT interface, witty utilization of huge liable Single Mode Fiber rather than re-installing the whole network with Dispersion Shifted Fiber for their upgrading to ultra data speed Optical Fiber System based MPLS network results in the system more efficient with the existing Fiber network.
Abstract: The migration of present data network to the IoT interface, witty utilization of huge liable Single Mode Fiber rather than re-installing the whole network with Dispersion Shifted Fiber for their upgrading to ultra data speed Optical Fiber System based MPLS network for countering the main impediment of Chromatic Dispersion by estimating the real foe and compensating it at the receiver end and hence results the system more efficient with the existing Fiber network. The present scanning method of Fractional Fourier Transform (FrFT) to measure the Chromatic Dispersion (CD) encounters constraints of high latency time along with worst dispersion estimation error 250 picoseconds/nanometre which can be drastically improved with Golden Scan Search (GS) FrFT based algorithm method with 5 to 6 sec latency time and estimation error improved and obtained less than 80 picoseconds/nanometre.
1 citations
DOI•
28 Jun 2021
TL;DR: In this article, an ultra-fast and high-resolution optical vector analysis scheme has been proposed and experimentally demonstrated, where a broadband optical frequency-sweeping signal is generated by injecting a linearly frequency-modulated signal into one radio-frequency (RF) port of a dual-drive Mach-Zehnder electro-optic modulator, which is used to achieve fast scanning of the frequency response characteristic of the device under test (DUT).
Abstract: An ultra-fast and high-resolution optical vector analysis scheme has been proposed and experimentally demonstrated. In the scheme, a broadband optical frequency-sweeping signal is generated by injecting a linearly frequency-modulated signal into one radio-frequency (RF) port of a dual-drive Mach-Zehnder electro-optic modulator, which is used to achieve fast scanning of the frequency response characteristic of the device under test (DUT). A single-tone microwave signal is injected into the other RF port of the modulator to realize down-conversion of the frequency-sweeping signal. The down-converted signal is then digitized by an analog-to-digital converter, and is processed through Hilbert transform to extract the amplitude- and phase-frequency response of the DUT. In the proof-of-concept experiment, the amplitude- and phase-frequency response of the Brillouin gain in a section of non-zero dispersion shifted fiber with a length of 3 km is accurately measured, where the measurement time is only 20 μs, and the frequency resolution reaches 20 kHz.