Cylindrical vector beam generation from a multi elliptical core optical fiber

Milione, Giovanni; Sztul, H. I.; Nolan, Daniel A.; Kim, Junghoon; Etienne, Michael; McCarthy, Joseph E.; Wang, J.; Alfano, R. R.

doi:10.1117/12.872004

Cited by 20 publications

(13 citation statements)

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“…The 8 array elements are excited with phase delays of 0, π/4, π/2, 3π/4, π, 5π/4, 3π/2 and 7π/4. Our results agree well with the previous studies in the RF domain171819 and in the optical domain27. Besides, the beam’s phase distribution is characterized through its interference (see Fig.…”

Section: Resultssupporting

confidence: 92%

“…In addition to the near field and far field intensity profiles of the generated OAM + 1 beam27, we also investigate the evolution of the beam’s intensity profiles at different distances. Figure 2c1–c5 depict the intensity profiles of the generated OAM + 1 beam at various ranges from 0.4 to 1.2 m. Our experimental results agree well with the simulation predictions.…”

Section: Resultsmentioning

confidence: 99%

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Demonstration of Tunable Steering and Multiplexing of Two 28 GHz Data Carrying Orbital Angular Momentum Beams Using Antenna Array

Xie

Zhao

Yan

et al. 2016

Sci Rep

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In line-of-sight communication systems, accurate alignment between the transmitter and receiver is important to guarantee sufficient signal power at the receiver. Such alignment is even more important for orbital angular momentum (OAM) multiplexing systems since misalignment between the transmitter and receiver may cause crosstalk among channels. In this paper, we demonstrate the simultaneous generation and tunable steering of two OAM beams utilising a custom-designed circular antenna array at 28 GHz. We achieve a steering angle of up to 35 degrees from the antenna array normal. We find that (i) the steering angle of the generated OAM beams is limited by the emitting angle of the antenna elements, and (ii) a larger steering angle may degrade the mode purity of the generated OAM beams as well as induce inter-symbol-interference to each of the individual channels. Moreover, we demonstrate the transmission of two 1-Gbaud quadratic phase shift keying (QPSK) signal over the two steerable OAM beams with both multiplexed channels achieved bit error rates (BERs) of <3.8 × 10−3.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Demonstration of Tunable Steering and Multiplexing of Two 28 GHz Data Carrying Orbital Angular Momentum Beams Using Antenna Array

Xie

Zhao

Yan

et al. 2016

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Recently, more and more attentions have been focused on the generation of OAM beams with phased array antenna (PAA) in RF, microwave, and lightwave region 32 33 34 35 . To model such process, some simulations are also carried on an annular PAA with antenna unit of linearly polarized Gauss beam as schematically shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Identifying Orbital Angular Momentum of Vectorial Vortices with Pancharatnam Phase and Stokes Parameters

Zhang

Feng

Cui

et al. 2015

Sci Rep

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In this work, an explicit formula is deduced for identifying the orbital angular moment (OAM) of vectorial vortex with space-variant state of polarization (SOP). Different to scalar vortex, the OAM of vectorial vortex can be attributed to two parts: 1. the azimuthal gradient of Pancharatnam phase; 2. the product between the azimuthal gradient of orientation angle of SOP and relevant solid angle on the Poincaré sphere. With our formula, a geometrical description for OAM of light beams can be achieved under the framework of the traditional Poincaré sphere. Numerical simulations for two types of vectorial vortices have been carried on to confirm our presented formula as well as demonstrate the geometrical description of OAM. Furthermore, this work would pave the way for precise characterization of OAM charge of vectorial vortices.

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“…For example, a mode (de)multiplexer for OAM modes that has been demonstrated is based on passive beam (separation) combining [4], e.g., data streams from N singlemode optical fibers (SMFs) are transformed into N OAM modes via N spatial light modulators (SLMs), or vice versa, and are then (separated) combined via N − 1 beam splitters. There are many methods to generate vector modes, e.g., [9][10][11]. Here, a liquid crystal technology referred to as a q-plate is used [12].…”

mentioning

confidence: 99%

Demonstration of intradyne BPSK optical free-space transmission in representative atmospheric turbulence conditions for geostationary uplink channel

2017

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Binary phase-shift keying optical transmission in the C-band with coherent intradyne reception is demonstrated over a long-range (10.45 km) link through the atmosphere. The link emulates representative channel conditions for geostationary optical feeder uplinks in satellite communications. The digital signal processing used in recovering the transmitted data and the performed measurements are described. Finally, the bit error rate results for 10 Gbit/s, 20 Gbit/s, and 30 Gbit/s of the outdoor experiments are presented and compared with back-to-back measurements and theory.

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Cylindrical vector beam generation from a multi elliptical core optical fiber

Cited by 20 publications

References 0 publications

Demonstration of Tunable Steering and Multiplexing of Two 28 GHz Data Carrying Orbital Angular Momentum Beams Using Antenna Array

Demonstration of Tunable Steering and Multiplexing of Two 28 GHz Data Carrying Orbital Angular Momentum Beams Using Antenna Array

Identifying Orbital Angular Momentum of Vectorial Vortices with Pancharatnam Phase and Stokes Parameters

Demonstration of intradyne BPSK optical free-space transmission in representative atmospheric turbulence conditions for geostationary uplink channel

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