Semi-ellipsoid microlens simulation and fabrication for enhancing optical fiber coupling efficiency

2008 ◽  
Vol 147 (1) ◽  
pp. 93-98 ◽  
Author(s):  
Jr-Yun Hu ◽  
Che-Ping Lin ◽  
Shih-Yu Hung ◽  
Hsiharng Yang ◽  
Ching-Kong Chao
Keyword(s):  
Optical Fiber ◽  
Coupling Efficiency ◽  
Fiber Coupling

Fabrication of Lensed Plastic Optical Fiber Array Using Electrostatic Force

2011 ◽  
Vol 133 (3) ◽  
Author(s):  
Yih-Tun Tseng ◽  
Jhong-Bin Huang ◽  
Che-Hsin Lin ◽  
Chin-Lung Chen ◽  
Wood-Hi Cheng
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Electrostatic Force ◽  
Coupling Efficiency ◽  
Numerical Aperture ◽  
Uv Curing ◽  
Power Budget ◽  
Fiber Array ◽  
Plastic Optical Fibers ◽  
Efficient Coupling

The GI (graded-index) POFs (Plastic optical fibers), which has been proven to reach distances as long as 1 km at 1.25 Gb/s has a relatively low numerical aperture . Therefore, the efficient coupling of GI POFs to the light source has become critical to the power budget in the system. Efficient coupling for a POFs system normally involves either a separate lens or the direct formation of the lens at the end of the fiber. Forming the lens-like structure directly on the fiber end is preferred for simplicity of fabrication and packaging, such as polishing and fusion, combine different fibers with the cascaded fiber method and hydroflouride (HF) chemical etching. These approaches are well established, but applicable only to glass. Optical assembly architecture for multichannel fibers and optical devices is critical to optical fiber interconnections. Multichannel fiber-pigtail laser diode (LD) modules have potential for supporting higher data throughput and longer transmission distances. However, to be of practical use, these modules must be more precise. This work proposes and manufactures lensed plastic optical fibers (LPOF) array. This novel manipulation can be utilized to fabricate an aspherical lens on a fiber array after the UV curing of the photo-sensitive polymer; the coupling efficiency (CE) is increased and exceeds 47% between the LD array and the fiber array.

Experimental optimization of the fiber coupling efficiency of GaAs quantum dot-based photon sources

2021 ◽  
Vol 119 (24) ◽  
pp. 244003
Author(s):  
Weijie Nie ◽  
Nand Lal Sharma ◽  
Carmen Weigelt ◽  
Robert Keil ◽  
Jingzhong Yang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Coupling Efficiency ◽  
Experimental Optimization ◽  
Fiber Coupling ◽  
Photon Sources ◽  
Gaas Quantum Dot

Coupling Efficiency of Light Intensity from Blackbody Cavity into Spherical Optical Fiber

2020 ◽  
Vol 49 (9) ◽  
pp. 906001-906001
Author(s):  
宋超鑫 Chao-xin SONG ◽  
雷小华 Xiao-hua LEI ◽  
谢磊 Lei XIE ◽  
刘显明 Xian-ming LIU ◽  
陈伟民 Wei-min CHEN
Keyword(s):  
Light Intensity ◽  
Optical Fiber ◽  
Coupling Efficiency ◽  
Blackbody Cavity

Pointing errors effect on fiber coupling efficiency for Gaussian-beam wave through atmospheric turbulence channel in FSO links

2019 ◽  
Vol 435 ◽  
pp. 183-189 ◽  
Author(s):  
Gaoyuan Lu ◽  
Jing Ma ◽  
Chao Zhai ◽  
Siyuan Yu ◽  
Liying Tan ◽  
...  
Keyword(s):  
Gaussian Beam ◽  
Atmospheric Turbulence ◽  
Coupling Efficiency ◽  
Beam Wave ◽  
Fiber Coupling ◽  
Pointing Errors

Enhancement of Coupling Efficiency of Butterfly Package Laser Modules Based on Post-Weld-Shift Compensation

2011 ◽  
Vol 145 ◽  
pp. 109-113
Author(s):  
Jao Hwa Kuang ◽  
Tsung Pin Hung ◽  
Shian Huan Chiou ◽  
Chao Ming Hsu
Keyword(s):  
Optical Fiber ◽  
Laser Diode ◽  
Optical Design ◽  
Coupling Efficiency ◽  
Welding Process ◽  
Central Wavelength ◽  
Power Coupling ◽  
Finite Element Software ◽  
Numerical Predictions ◽  
Welding Sequence

When fabricating laser diode transceiver modules, the coupling efficiency can be improved via a laser hammering process, in which additional, calculated spot welds are performed at key locations within the package in order to compensate for post-weld shift. The present study performs a numerical investigation into the post-weld-shift compensation of a butterfly laser module package incorporating a lensed optical fiber and a laser diode with a central wavelength of 980 nm. In performing the simulations, the deformation of the package components during the welding process is modeled using Marc finite element software. Furthermore, the laser power coupling efficiency is estimated using the commercial Zemax optical design program. It is shown that the numerical predictions for the coupling power in the laser diode transceiver module are in good agreement with the experimental results. The optimal welding sequence which minimizes the post-weld shift of the optical fiber relative to the laser diode is determined. It is shown that the corresponding coupling efficiency is equal to 69%. Finally, it is shown that by performing an optimized laser hammering process, the coupling efficiency can be improved to around 99%.

scholarly journals Research on fiber coupling technology of kilowatt laser diode by single emitters

2018 ◽  
Vol 189 ◽  
pp. 11008 ◽  
Author(s):  
Wenbin Qin ◽  
Jing Li ◽  
Lei Yao ◽  
Youqiang Liu ◽  
Yuntao Qiu ◽  
...  
Keyword(s):  
Diode Laser ◽  
Coupling Efficiency ◽  
Processing System ◽  
Spot Size ◽  
Theoretical Research ◽  
Fiber Coupling ◽  
Output Laser Power ◽  
Fiber Taper ◽  
Output Laser ◽  
Focus Spot Size

This paper proposes a program that combine the laser of single-emitters by using fiber combiner, what’s more, we designed and developed a multiple single emitters diode laser module of full optical fiber. We used ZEMAX software to simulate and optimize the influence of fiber coupling efficiency by the location of cylindrical lens and fiber, finally, we developed 8W fiber coupling single emitter diode laser, the wavelength is 915nm, fiber diameter is 105/125μm, NA0.15. This article also carried on the theoretical research of N×1 fiber combiner, and based on Vytran GPX glass processing system, we fabricated the 19×1fiber combiner by TFB technique, combined 19 105/122μm, NA0.15 fibers to a 400/440μm, NA0.22 fiber, has realized 150W laser output, with fiber combining efficiency more than 96%. In the end, 8*400um fibers are synthesized through a fiber taper. The output laser power after fiber taper reached 1453W, with the focus spot size is 2.25mm*1.1mm and power density reached 6×104W/cm2.

Study on Coupling of Step and Graded Index Single Mode Optical Fiber Considering the Transverse Misalignment

2020 ◽  
Vol 8 (2) ◽  
pp. 78-82
Author(s):  
Prosenjit Roy Chowdhury ◽  
◽  
Keyword(s):  
Optical Fiber ◽  
Communication Systems ◽  
Structural Parameters ◽  
Fractional Power ◽  
Single Mode ◽  
Spot Size ◽  
Fiber Coupling ◽  
Fundamental Parameters ◽  
Graded Index ◽  
Wide Range

"Advance design and day to day up-gradation of communication system is the requirement of international telecommunication. The optical communication systems involve the effective fiber coupling or splicing to meet the need of long communication channel. When the studies on both the intensive and extensive properties of optical fiber are exploring new research horizons, the effectiveness of such systems can be calibrated with transmission parameters like transmitted fractional power, which is a function of ‘spot size’ as well. Our study of fiber junctions based on fundamental parameters like wavelength, fiber profile index etc. has touched some unrevealed areas and explored some interesting results. The profile index of optical fiber has received less attention compared to other structural parameters of optical fiber but our study at important wavelengths for different profiles has shown that the less-used fiber profiles has some interesting premier outcomes, which can introduce some significant impact on optical fiber based system design and engineering. We have observed almost frequency or wavelength independent transmitted fractional power around the most used 1.55 micrometer wavelengths at some rarely used fiber profile index. Our study predicts the best and worst fiber profiles for transmitted fractional power (T ), at the same time, we have observed the fiber profile index independent region for a band of ‘T’ values. The reporting and its approach are found to be premier in this field. So, our work is reporting a comparison of effective fiber-to-fiber coupling, based on fiber profile index of different fibers. It is also giving a clear view of the wavelength dependency of effective fiber coupling for different fibers having wide range of graded fiber profiles."

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