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We demonstrate the use of a 6-terminal photonic lantern in order to achieve deterministic conversion of the transverse structure of heralded single photons, generated through the spontaneous four wave mixing process in a birefringent fiber.
We experimentally demonstrate for the first time uniform and broadband supercontinuum generation in long tapered multimode fibers. This is achieved through an accelerated geometric parametric instability that forces the sidebands towards higher/lower frequencies.
We show that the Aharonov-Bohm-like suppression of optical tunneling in twisted multicore fibers can persist under highly nonlinear conditions. The energy exchange dynamics are analyzed and possible arrangements to experimentally observe this effect are presented.
We show that modulational instability can occur in normally dispersive adiabatically tapered parabolic multimode fibers. Experimental results corroborate this intriguing phenomenon at 1.064 μm, indicating that the sideband gain is dictated by the tapering rate.
We show that an Aharonov-Bohm like suppression of optical tunneling can take place in linear and nonlinear twisted multicore optical fiber structures. The energy exchange is analyzed under nonlinear conditions and a viable setting to observe these effects is suggested.
We demonstrate that frequency generation in multimode graded-index fibers can be tailored through appropriate fiber design. This is achieved by exploiting a geometric parametric instability which can be utilized for developing novel fiber light sources.
A spatial pulse position modulation is proposed and experimentally validated for a 12 spatial channel transmission over 53km multi-mode fiber. Improved data rates up to 30% are demonstrated with respect to conventional QPSK.
We demonstrate an all-fiber, ring core photonic lantern to generate high quality OAM modes up to the second order at 1550nm. We achieved low-loss coupling of the lantern OAM modes into a ring core fiber.
We demonstrate amplification in a multimode cladding-pumped fiber amplifier supporting 36 spatial modes. Using a large core EDF, we obtain <0.5dB differential modal gain, 16dB gain, and 25dBm output power across the C-band.
We demonstrate over two octaves supercontinuum generation in a graded index multimode fiber using a picosecond microchip laser at 1064 nm. Enhanced visible supercontinuum is obtained in a tunable fashion based on initial launching conditions.
We demonstrate mode selective amplification in a LMA cladding pumped Yb-doped fiber amplifier employing a photonic lantern. Signal gains of up to 19 dB and >1W output power are demonstrated with high mode fidelity.
We demonstrate combined wavelength- and mode-multiplexed transmission with a spectral efficiency of 58 b/s/Hz over an 87-km single-span multi-mode fiber using 16-QAM modulation format. The hybrid fiber span comprises 10- and 15-mode fibers.
We demonstrate transmission of trellis-coded-modulated-12-spatial-and-polarization modes over 40km 6-LP-mode fiber with low differential mode group delay. By employing 8-PSK trellis coded modulation, an OSNR gain of 1.8dB is observed in comparison to QPSK.
We demonstrate an all-fiber multi-mode, multi-core photonic lantern mode multiplexer for SDM applications. Selective excitation of 21 spatial channels, LP01 and LP11a, b modes in 7 cores, with insertion losses below 0.4dB is obtained.
10 spatial mode transmission over 40km multi-mode fiber (50μm core diameter) with low DMGD is demonstrated using low-loss all-fiber 10-port photonic lanterns and 20×20 multiple-input multiple-output time-domain equalizer. A maximum MDL of 4.5dB is observed.
We demonstrate combined wavelength- and mode-multiplexed transmission over a 125-km multimode single span composed of 10- and 15-mode fibers with a spectral efficiency of 29 b/s/Hz. A transmission capacity of 115.2 Tb/s is achieved over a distance of 87 km.
Wavelength and mode-division multiplexed 4.45 km low-DMGD (0.05ns/km) 6-LP mode fibre transmission employing low-loss all-fibre 10-port photonic lanterns is demonstrated using a 20×20 multiple input multiple-output time-domain equalizer. We measured an MDL of 8.7± 1.7dB over 10 hours.
We fabricate ten- and fifteen-mode photonic lanterns by using microstructured preforms that enables a repeatable fabrication process and scalability to large number of modes. Mode selective capability is demonstrated by independently exciting individual LP mode.
We transmit over all 30 spatial and polarization modes of a 22.8-km multimode fiber. 15-mode photonic lanterns enabled low-loss coupling into and out of the fiber and a time-multiplexed coherent receiver facilitates measurement of all 30 signals.
Low-loss all-fiber mode selective photonic-lanterns capable of exciting six spatial fiber modes (4 LP modes) are demonstrated. Mode field profile characterization of photonic lanterns using both step and graded index fibers is presented.
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