This work presents a novel lensed plastic optical fiber (POF), efficiently coupled with a light source. A convexo-concave plastic lens (CCPL) was bound to a flat-end plastic optical fiber using laser transmission welding (LTW) to form a convexo-concave-shaped fiber endface (CCSFE). The novel lensed plastic optical fiber has a longer working distance and a higher coupling efficiency than conventional lensed plastic optical fibers. 850 nm fiber is often used in high-power 2.5 Gb/s transmission rate. Experimental POF is perfluorinated POF, 62.5–500 μm diameter, 850∼1300 μm wavelength, 10 dB/km power loss rate, 2.5 Gb/s transmission rate. Because of the small diameter of POF, it is difficult to couple between the light source and POF. Therefore, it is important to develop a lensed fiber structure to increase the coupling efficiency. Experiments indicate that the coupling efficiency between a laser diode at a wavelength of 850 nm and a graded-index POF is as high as 85% with a long working distance of 250 μm. The measured tolerance, in relation to the lateral and vertical displacements and tilt, are satisfactory for practical active alignment.
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e-mail: tsengyt@mail.nsysu.edu.tw
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August 2011
Research Papers
Lensed Plastic Optical Fiber with a Convexo-Concave Fiber Endface for Coupling Laser Diodes With Plastic Optical Fiber
Yih-Tun Tseng,
Yih-Tun Tseng
Department of Mechanical and Electro-Mechanical Engineering,
e-mail: tsengyt@mail.nsysu.edu.tw
National Sun Yat-Sen University
, 70 Lien-Hai Road, Kaohsiung 80424, Taiwan, R.O.C.
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Shu-Ming Chang,
Shu-Ming Chang
Department of Mechanical and Electro-Mechanical Engineering,
National Sun Yat-Sen University
, 70 Lien-Hai Road, Kaohsiung 80424, Taiwan, R.O.C.
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Sheng-He Huang,
Sheng-He Huang
Department of Mechanical and Electro-Mechanical Engineering,
National Sun Yat-Sen University
, 70 Lien-Hai Road, Kaohsiung 80424, Taiwan, R.O.C.
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Wood-Hi Cheng
Wood-Hi Cheng
Senior Member, IEEE, Fellow, OSA
Department of Mechanical and Electro-Mechanical Engineering,
National Sun Yat-Sen University
, 70 Lien-Hai Road, Kaohsiung 80424, Taiwan, R.O.C.
Search for other works by this author on:
Yih-Tun Tseng
Department of Mechanical and Electro-Mechanical Engineering,
National Sun Yat-Sen University
, 70 Lien-Hai Road, Kaohsiung 80424, Taiwan, R.O.C.
e-mail: tsengyt@mail.nsysu.edu.tw
Shu-Ming Chang
Department of Mechanical and Electro-Mechanical Engineering,
National Sun Yat-Sen University
, 70 Lien-Hai Road, Kaohsiung 80424, Taiwan, R.O.C.
Sheng-He Huang
Department of Mechanical and Electro-Mechanical Engineering,
National Sun Yat-Sen University
, 70 Lien-Hai Road, Kaohsiung 80424, Taiwan, R.O.C.
Wood-Hi Cheng
Senior Member, IEEE, Fellow, OSA
Department of Mechanical and Electro-Mechanical Engineering,
National Sun Yat-Sen University
, 70 Lien-Hai Road, Kaohsiung 80424, Taiwan, R.O.C.
J. Manuf. Sci. Eng. Aug 2011, 133(4): 041011 (6 pages)
Published Online: August 11, 2011
Article history
Revised:
March 21, 2010
Received:
September 15, 2010
Online:
August 11, 2011
Published:
August 11, 2011
Citation
Tseng, Y., Chang, S., Huang, S., and Cheng, W. (August 11, 2011). "Lensed Plastic Optical Fiber with a Convexo-Concave Fiber Endface for Coupling Laser Diodes With Plastic Optical Fiber." ASME. J. Manuf. Sci. Eng. August 2011; 133(4): 041011. https://doi.org/10.1115/1.4003952
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