A New Type Circular Photonic Crystal Fiber for Orbital Angular Momentum Mode Transmission

Zhang, Hu; Zhang, Wenbo; Xi, Lixia; Tang, Xianfeng; Zhang, Xia; Zhang, Xiaoguang

doi:10.1109/lpt.2016.2551325

Cited by 107 publications

(47 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, it is compatible with WDM and advanced multilevel amplitude/phase modulation formats, which makes it possible to realize a total transmission capacity in the range of the petabits-per-second and hundredbits-per-secondper-hertz aggregate spectral efficiency. In addition to these ring fibers, some new types of microstructured fibers have also been proposed for multi-mode OAM transmission [138], [139].…”

Section: B Optical Oam Fiber Communicationsmentioning

confidence: 99%

Orbital Angular Momentum Waves: Generation, Detection, and Emerging Applications

Chen

Zhou

Moretti

et al. 2020

IEEE Commun. Surv. Tutorials

249

View full text Add to dashboard Cite

Orbital angular momentum (OAM) has aroused a widespread interest in many fields, especially in telecommunications due to its potential for unleashing new capacity in the severely congested spectrum of commercial communication systems. Beams carrying OAM have a helical phase front and a field strength with a singularity along the axial center, which can be used for information transmission, imaging and particle manipulation. The number of orthogonal OAM modes in a single beam is theoretically infinite and each mode is an element of a complete orthogonal basis that can be employed for multiplexing different signals, thus greatly improving the spectrum efficiency. In this paper, we comprehensively summarize and compare the methods for generation and detection of optical OAM, radio OAM and acoustic OAM. Then, we represent the applications and technical challenges of OAM in communications, including free-space optical communications, optical fiber communications, radio communications and acoustic communications. To complete our survey, we also discuss the state of art of particle manipulation and target imaging with OAM beams.

show abstract

Section: B Optical Oam Fiber Communicationsmentioning

confidence: 99%

Orbital Angular Momentum Waves: Generation, Detection, and Emerging Applications

Chen

Zhou

Moretti

et al. 2020

IEEE Commun. Surv. Tutorials

249

View full text Add to dashboard Cite

show abstract

“…The OAM1,1 family composed of even and odd mode of HE2,1 have two OAM modes because the OAM1,1 composed by TE0,m and TM0,m mode is unstable [34]. The C-PCF fiber structure without the two doped regions in Figure 2a was proposed by our group [17]. It supports the 14 OAM mode transmission and exhibits some good features, such as wide In the EDFA, the amplification occurs in the process of energy exchange between the pump light and Erbium ions.…”

Section: Modeling Of the Oam-edfamentioning

confidence: 99%

“…In Figure 4a, we can see that the DMG would be acceptable when the doping concentrations are in the marked area, which means a large range for concentration tolerance. To obtain a balance between avoiding the radially higher order modes and achieving a good quality of OAM modes, a value of d0 can be selected from 2.2 µm to 3.6 µm, whose large range indicates a large fabrication tolerance [17]. Besides the concentration and the diameter of a large air-hole, the doped width tolerance should also be considered.…”

Section: Conflicts Of Interestmentioning

confidence: 99%

See 1 more Smart Citation

Two-Layer Erbium-Doped Air-Core Circular Photonic Crystal Fiber Amplifier for Orbital Angular Momentum Mode Division Multiplexing System

Zhang

Han

et al. 2019

Crystals

Self Cite

View full text Add to dashboard Cite

Orbital angular momentum (OAM) mode-division multiplexing (MDM) has recently been under intense investigations as a new way to increase the capacity of fiber communication. In this paper, a two-layer Erbium-doped fiber amplifier (EDFA) for an OAM multiplexing system is proposed. The amplifier is based on the circular photonic crystal fiber (C-PCF), which can maintain a stable transmission for 14 OAM modes by a large index difference between the fiber core and the cladding. Further, the two-layer doped region can balance the amplification performance of different modes. The relationship between the performance and the parameters of the amplifier is analyzed numerically to optimize the amplifier design. The optimized amplifier can amplify 18 modes (14 OAM modes) simultaneously over the C-band with a differential mode gain (DMG) lower than 0.1 dB while keeping the modal gain over 23 dB and noise figure below 4 dB. Finally, the fabrication tolerance and feasibility are discussed. The result shows a relatively large fabrication tolerance in the OAM EDFA parameters.Crystals 2019, 9, 156 2 of 10 capacity in a MDM system [5]. For communications using OAM beams, there are two key problems to be solved. One is the optical vortex generation, which is the most fundamental technique to implement OAM multiplexing. The optical vortex can be generated by a variety of schemes, such as spatial light modulator [6] and modified interference of different modes [7]. A liquid-crystal spatial light modulator is another promising scheme for generating OAM modes, which exhibits some good properties including simplicity, high efficiency, and reconfiguration [8][9][10]. Another is the optical vortex beam transmission, which needs the fiber supporting OAM modes. In current research, the ring fiber was designed mostly to transmit OAM modes [11][12][13][14][15]. The circular photonic crystal fiber (C-PCF) was also proposed as a potential OAM fiber structure [16][17][18][19]. One fiber can transmit several dozens of mutually orthogonal modes. To date, terabit data transmission based on an OAM fiber has been demonstrated [20]. The transmission distance of the OAM mode in fibers has already reached 50 km [21]. However, many techniques are still needed for handling the implementation of long-haul MDM systems based on OAM modes. OAM carrier signal amplification is one of the critical techniques.The Erbium-doped fiber amplifier (EDFA) not only allows the light signal to be amplified online directly but also possesses the same range between amplification wavelength and the low loss wavelength of optical fibers, which is suitable for MDM systems based on OAM modes. However, unlike the single-mode fiber amplifier, there are tens (even dozens) of modes in the OAM fiber amplifier. The transverse distribution of each mode is different. The biggest difference of these mode gains was defined as differential mode gain (DMG) [22]. DMG should be low enough to ensure approximately equal amplification of the multimode in the fiber.In recent studies, most designs...

show abstract

“…Based on this kind of idea, a circular type PCF was firstly proposed by our research group as shown in Figure 2 [36]. This kind of circular PCF, by optimizing design, can support 14, 26, and 42 good quality OAM modes with satisfied transmission properties like low confinement loss, flat CD, large effective mode area, and low nonlinear coefficient [39,42,43,45]. (a)…”

Section: Circular Pcfsmentioning

confidence: 99%

The Orbital Angular Momentum Modes Supporting Fibers Based on the Photonic Crystal Fiber Structure

Zhang

et al. 2017

Crystals

Self Cite

View full text Add to dashboard Cite

Abstract:The orbital angular momentum (OAM) of light can be another physical dimension that we exploit to make multiplexing in the spatial domain. The design of the OAM mode supporting fiber attracts many attentions in the field of the space division multiplexing (SDM) system. This paper reviews the recent progresses in photonic crystal fiber (PCF) supporting OAM modes, and summarizes why a PCF structure can be used to support stable OAM transmission modes. The emphasis is on the circular PCFs, which possess many excellent features of transmission performance, such as good-quality OAM modes, enough separation of the effective indices, low confinement loss, flat dispersion, a large effective area, and a low nonlinear coefficient. We also compare the transmission properties between the circular PCF and the ring core fiber, as well as the properties between the OAM EDFA based on circular PCF and the OAM EDFA based on the ring core fiber. At last, the challenges and prospects of OAM fibers based on the PCF structure are also discussed.

show abstract

A New Type Circular Photonic Crystal Fiber for Orbital Angular Momentum Mode Transmission

Cited by 107 publications

References 16 publications

Orbital Angular Momentum Waves: Generation, Detection, and Emerging Applications

Orbital Angular Momentum Waves: Generation, Detection, and Emerging Applications

Two-Layer Erbium-Doped Air-Core Circular Photonic Crystal Fiber Amplifier for Orbital Angular Momentum Mode Division Multiplexing System

The Orbital Angular Momentum Modes Supporting Fibers Based on the Photonic Crystal Fiber Structure

Contact Info

Product

Resources

About