Abstract
Up to now, there have been no complete theoretical researches and field experiment reports on the fiber fusion loss at high altitude. Therefore, we have conducted an exploratory study on the fiber splicing loss at high altitude, and firstly analyze the influence of mode field diameter mismatch, axial offset, angle tilt or end face gap affected by high altitude on splice loss, and then discuss the influence of fusion-splicing parameters on splice loss. Besides, a mathematical model for reducing the splicing loss of single-mode fiber at high altitude is established by combining the effects of temperature, humidity, oxygen content, atmospheric pressure, gale and gravity. We have conducted repeated field fusion experiments in different altitude areas (53, 2980, 4000, 4200, 4300, 5020, and 5200 m) more than once, hence obtaining a large number of field experimental data, making a deep comparison between typical “plain” area and typical “high altitude” area. The splice loss of most fusion points achieved successfully has been reduced by at least 0.07 dB. The simulation results are basically consistent with the theoretical analysis. Ultimately, the method proposed has been directly applied to on-site splicing engineering in high altitude environment and achieves good results.
Highlights
In the optical fiber communication links with a large span and super long distance, the whole optical fiber link is often composed of several independent and continuous fiber splicing [1,2]
The simulation results are basically consistent with the theoretical analysis
The experimental results show that, in the case of mode field diameter (MFD) mismatch, the value of UG is greater than that of UU and GG, the three curves of UU, GG and UG all do not change, as shown in Figure 6a, which indicates that the fusion loss L(w) caused by MFD mismatch is not affected by the high altitude environment
Summary
In the optical fiber communication links with a large span and super long distance, the whole optical fiber link is often composed of several independent and continuous fiber splicing [1,2]. By effectively controlling the viscous flow or the diffusion of glass components in the fusion-splicing process, the loss caused only by lateral shift and refractive index change can be reduced [4]. This literature fails to consider the effect of angle tilt on the fusion splice loss, and lacks enough experimental data. When the eccentricity of the fiber core and the deviation of the outer diameter of the fiber exist, the change of splice loss can be less than 0.1 dB with the 18 mA discharge current, 0.2 s pre-fusion time and 1 s discharge duration [11], but the influence of angle tilt and end face spacing on splice loss is not considered here
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
