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A five-mode multiplexer/demultiplexer based on a partially elongated five-core fiber is presented. Multiplexing operation is experimentally verified. Mode selectivity higher than 95% at 1550 nm, for both the LP11 and the LP21 mode, is achieved.
The vector-based quality equalization method is proposed to mitigate the core-to-core Q-difference for multicore fiber transmission. The multiple signals are combined and separated with transfer function in vector domain. It is confirmed that it is effective at larger SNR difference case compared to the bit-based equalization method numerically.
In this work, we studied modulational instability (MI) in an asymmetrical dual-core optical fiber with different power ratio at under normal (β2 >0) and anomalous dispersion (β2 < 0) regime. We investigate the variation of modulational instability for symmetric and asymmetric power. The result shows the influence of power in the frequency at which the MI gain appears. When the nonlinear coefficient...
Ultra-long-haul WDM/SDM transmission based on 200 Gbit/s/ch over 5,040 km using cladding pumped seven-core EDFA has been successfully demonstrated for the first time. In addition, the feasibility of the transoceanic transmission based on 100 Gbit/s/ch was confirmed.
We demonstrate a measurement method for the cutoff wavelength of multi-core fibers using a near-infrared camera. This method enables the simultaneous measurement of multiple cores and further simplifies the measurement procedure. The experimental results of a dual-core fiber support the validity of this method.
We propose a novel structure of optoelectronic oscillator (OEO) based on a microwave photonics filter (MPF), and this MPF is implemented by phase modulation to intensity modulation conversion and a heterogeneous multicore fiber. In our scheme, the periodicity of the generated finite impulse response (FIR) filter by using the multicore fiber is broken by the phase modulation to intensity modulation...
We propose a homogeneous coupled w-type four-core fiber. By adding trench structures around the cores, the lower differential mode group delay (DMGD) between the fundamental and higher-order supermodes is realized.
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