Optimum design for a novel large mode area fiber with triangle-platform-index core

2019 ◽  
Vol 33 (18) ◽  
pp. 1950207 ◽  
Author(s):  
Xiaofang Miao ◽  
Peng Wu ◽  
Baoyin Zhao
Keyword(s):  
Power Level ◽  
Single Mode ◽  
Output Power Level ◽  
Nonlinear Phenomenon ◽  
Industrial Processing ◽  
Mode Field ◽  
Index Distribution ◽  
Core Fiber ◽  
Mode Area ◽  
Field Area

A triangle-platform-index core fiber is proposed, in which the refractive index distribution in the cross-section of the fiber core is composed of several closely connected triangles and a platform at the outermost layer. The simulation results show that the proposed fiber possesses an extremely large mode field area of [Formula: see text] at the wavelength of [Formula: see text], and achieves single-mode operation state near a bend radius of 17 cm. Furthermore, several different mode field distributions, including Gauss-like distribution, flatten distribution and hollow distribution, are achieved. The proposed fiber can benefit suppressing nonlinear phenomenon to increase the output power level of fiber laser, and promoting special industrial processing.

Design and analysis of trench-assisted large-mode-field-area multi-core fiber with air-hole

2021 ◽  
Vol 127 (1) ◽  
Author(s):  
Yuqin Zhang ◽  
Yudong Lian ◽  
Yuhe Wang ◽  
Jingbo Wang ◽  
Mengxin Yang ◽  
...  
Keyword(s):  
Mode Field ◽  
Core Fiber ◽  
Field Area ◽  
Air Hole

scholarly journals Microdrilled tapers to enhance optical fiber lasers for sensing

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
R. A. Perez-Herrera ◽  
M. Bravo ◽  
P. Roldan-Varona ◽  
D. Leandro ◽  
L. Rodriguez-Cobo ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Fiber Lasers ◽  
Signal To Noise Ratio ◽  
Power Level ◽  
Single Mode ◽  
Optical Signal ◽  
Single Mode Fiber ◽  
Output Power Level ◽  
Linear Cavity

AbstractIn this work, an experimental analysis of the performance of different types of quasi-randomly distributed reflectors inscribed into a single-mode fiber as a sensing mirror is presented. These artificially-controlled backscattering fiber reflectors are used in short linear cavity fiber lasers. In particular, laser emission and sensor application features are analyzed when employing optical tapered fibers, micro-drilled optical fibers and 50 μm-waist or 100 μm-waist micro-drilled tapered fibers (MDTF). Single-wavelength laser with an output power level of about 8.2 dBm and an optical signal-to-noise ratio of 45 dB were measured when employing a 50 μm-waist micro-drilled tapered optical fiber. The achieved temperature sensitivities were similar to those of FBGs; however, the strain sensitivity improved more than one order of magnitude in comparison with FBG sensors, attaining slope sensitivities as good as 18.1 pm/με when using a 50 μm-waist MDTF as distributed reflector.

Mode field adaptation between single-mode fiber and large mode area fiber by thermally expanded core technique

2013 ◽  
Vol 47 ◽  
pp. 72-75 ◽  
Author(s):  
Xuanfeng Zhou ◽  
Zilun Chen ◽  
Haihuan Chen ◽  
Jie Li ◽  
Jing Hou
Keyword(s):  
Single Mode ◽  
Single Mode Fiber ◽  
Large Mode Area ◽  
Mode Field ◽  
Mode Area

scholarly journals Numerical Simulations on Polarization Quantum Noise Squeezing for Ultrashort Solitons in Optical Fiber with Enlarged Mode Field Area

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 226
Author(s):  
Arseny A. Sorokin ◽  
Elena A. Anashkina ◽  
Joel F. Corney ◽  
Vjaceslavs Bobrovs ◽  
Gerd Leuchs ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Numerical Simulations ◽  
Noise Suppression ◽  
Quantum Noise ◽  
Scale Up ◽  
Optical Pulses ◽  
Mode Field ◽  
Mode Area ◽  
Noise Squeezing ◽  
Field Area

Broadband quantum noise suppression of light is required for many applications, including detection of gravitational waves, quantum sensing, and quantum communication. Here, using numerical simulations, we investigate the possibility of polarization squeezing of ultrashort soliton pulses in an optical fiber with an enlarged mode field area, such as large-mode area or multicore fibers (to scale up the pulse energy). Our model includes the second-order dispersion, Kerr and Raman effects, quantum noise, and optical losses. In simulations, we switch on and switch off Raman effects and losses to find their contribution to squeezing of optical pulses with different durations (0.1–1 ps). For longer solitons, the peak power is lower and a longer fiber is required to attain the same squeezing as for shorter solitons, when Raman effects and losses are neglected. In the full model, we demonstrate optimal pulse duration (~0.4 ps) since losses limit squeezing of longer pulses and Raman effects limit squeezing of shorter pulses.

scholarly journals Graphene Oxide Sensitized No-Core Fiber Step-Index Distribution Sucrose Sensor

Photonics ◽  
2020 ◽  
Vol 7 (4) ◽  
pp. 101
Author(s):  
Gongli Xiao ◽  
Kaifu Zhang ◽  
Yuting Yang ◽  
Hongyan Yang ◽  
Ling Guo ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Sucrose Concentration ◽  
Beam Propagation Method ◽  
High Sensitivity ◽  
Single Mode ◽  
Step Index ◽  
Index Distribution ◽  
Low Threshold ◽  
Core Fiber ◽  
Sensor Detection

By coating graphene oxide (GO) onto the surface no-core fiber (NCF), we designed a single-mode no-core single-mode (SNS) fiber Step-Index Distribution sucrose sensor. With wavelength demodulation and the beam propagation method (BPM), the sensor without a GO coating was studied in the low RI range of 1.33~1.389, and the high RI range of 1.389~1.4185. The experiments show that the RI sensitivity of the sensor respectively reaches 132.9 nm/RIU and 292.22 nm/RIU. Both the numerical simulation and the experiments are highly consistent with the theoretical analysis results. Especially, having coated GO on the NCF for sensitization, a high sensitivity was achieved for the response to sucrose concentration solutions. The sensor’s RI sensitivity was increased from 132.9 nm/RIU up to 1348.67 nm/RIU in the ultra-narrow range of 1.33 to 1.3385. This result provides a theoretical and experimental basis for the enrichment and development of sensor detection with a low threshold sucrose concentration.

scholarly journals Design and Analysis of Trench-Assisted Low-Bending-Loss Large-Mode-Field-Area Multi-Core Fiber with an Air Hole

Photonics ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 251
Author(s):  
Renjie Jia ◽  
Yudong Lian ◽  
Yulei Wang ◽  
Zhiwei Lu
Keyword(s):  
Communication Systems ◽  
Structural Parameters ◽  
Practical Implementation ◽  
Mode Field ◽  
Bending Loss ◽  
Optical Communication Systems ◽  
Bending Radius ◽  
Core Fiber ◽  
Field Area ◽  
Air Hole

In this paper, a trench-assisted low-bending-loss large-mode-field-area multi-core fiber with air hole is proposed, which can achieve dual-mode transmission. The influence of structural parameters on fiber performance is analyzed systematically, and the structure of the trench, with a lower refractive index than the cladding, is also analyzed and optimized. By adjusting the structural parameters, the effective mode field area of the fundamental mode can reach 2003.24 um2 at 1550 nm, and when the bending radius is 1 cm, the bending loss is 2.57 × 10−3 dB/m. The practical implementation of the proposed fiber is feasible using existing fabrication technology and is applicable to the transmission of large-capacity optical communication systems and high-power lasers.

Single-Mode Large Mode-Field-Area Tm3+-Doped Lead-Silicate Glass Photonic Crystal Fibers

2017 ◽  
Vol 29 (5) ◽  
pp. 450-453 ◽  
Author(s):  
Guowu Tang ◽  
Tingting Zhu ◽  
Wei Lin ◽  
Tian Qiao ◽  
Zhishen Zhang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Silicate Glass ◽  
Photonic Crystal Fibers ◽  
Single Mode ◽  
Lead Silicate ◽  
Lead Silicate Glass ◽  
Mode Field ◽  
Crystal Fibers ◽  
Field Area

scholarly journals Low loss and high performance interconnection between standard single-mode fiber and antiresonant hollow-core fiber

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dmytro Suslov ◽  
Matěj Komanec ◽  
Eric R. Numkam Fokoua ◽  
Daniel Dousek ◽  
Ailing Zhong ◽  
...  
Keyword(s):  
Cross Coupling ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Higher Order ◽  
Field Size ◽  
Hollow Core ◽  
Low Loss ◽  
Alternative Mode ◽  
Mode Field ◽  
Core Fiber

AbstractWe demonstrate halving the record-low loss of interconnection between a nested antiresonant nodeless type hollow-core fiber (NANF) and standard single-mode fiber (SMF). The achieved interconnection loss of 0.15 dB is only 0.07 dB above the theoretically-expected minimum loss. We also optimized the interconnection in terms of unwanted cross-coupling into the higher-order modes of the NANF. We achieved cross-coupling as low as −35 dB into the LP$$_{11}$$ 11 mode (the lowest-loss higher-order mode and thus the most important to eliminate). With the help of simulations, we show that the measured LP$$_{11}$$ 11 mode coupling is most likely limited by the slightly imperfect symmetry of the manufactured NANF. The coupling cross-talk into the highly-lossy LP$$_{02}$$ 02 mode ($$>2000$$ > 2000  dB/km in our fiber) was measured to be below −22 dB. Furthermore, we show experimentally that the anti-reflective coating applied to the interconnect interface reduces the insertion loss by 0.15 dB while simultaneously reducing the back-reflection below −40 dB over a 60 nm bandwidth. Finally, we also demonstrated an alternative mode-field adapter to adapt the mode-field size between SMF and NANF, based on thermally-expanded core fibers. This approach enabled us to achieve an interconnection loss of 0.21 dB and cross-coupling of −35 dB into the LP$$_{11}$$ 11 mode.

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