OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 4 — Feb. 19, 2007
  • pp: 1434–1442

Asymmetric elliptic-cone-shaped microlens for efficient coupling to high-power laser diodes

Yu-Kuan Lu, Ying-Chien Tsai, Yu-Da Liu, Szu-Ming Yeh, Chi-Chung Lin, and Wood-Hi Cheng  »View Author Affiliations


Optics Express, Vol. 15, Issue 4, pp. 1434-1442 (2007)
http://dx.doi.org/10.1364/OE.15.001434


View Full Text Article

Enhanced HTML    Acrobat PDF (445 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

A new scheme of asymmetric elliptic-cone-shaped microlens (AECSM) employing a single-step fabrication technique for efficient coupling between the high-power 980-nm laser diodes and the single-mode fibers is proposed. The AECSMs are fabricated by asymmetrically shaping the fiber during the single-step grinding process and elliptically lensing the fiber tip during the fusing process. A maximum coupling efficiency of 85% and a high-average coupling efficiency of 71% have been demonstrated for a 980-nm laser diode with a high aspect ratio of 5. In comparison with the previous works on asymmetric fiber microlenses fabricated by the multi-step processes with complicated fabrication, the advantages of the AECSM structure for achieving high coupling are a single-step fabrication, a reproducible process, and a high-yield output. Therefore, this AECSM can form different aspect ratios of asymmetric elliptical microlenses to match the far field of the high-power diode lasers that is suitable for use in commercial high-power pump laser modules.

© 2007 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2340) Fiber optics and optical communications : Fiber optics components
(250.4480) Optoelectronics : Optical amplifiers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: November 29, 2006
Revised Manuscript: January 23, 2007
Manuscript Accepted: January 29, 2007
Published: February 19, 2007

Citation
Yu-Kuan Lu, Ying-Chien Tsai, Yu-Da Liu, Szu-Ming Yeh, Chi-Chung Lin, and Wood-Hi Cheng, "Asymmetric elliptic-cone-shaped microlens for efficient coupling to high-power laser diodes," Opt. Express 15, 1434-1442 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-4-1434


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. J. S. Major, W. E. Plano, D. F. Welch, G. T. Wiand, and T. S. Stakelon, "Singlemode InGaAs-GaAs laser diodes operating at 980 nm," Electron. Lett. 27, 539-540 (1991). [CrossRef]
  2. V. S. Shah, L. Curtis, R. S. Vodhanel, D. P. Bour, and W. C. Yang, "Efficient power coupling from a 980-nm, broad-area laser to a single-mode fiber using a wedge-shaped fiber endface," J. Lightwave Technol. 8, 1313-1318 (1990). [CrossRef]
  3. H. M. Presby and C. R. Giles, "Asymmetric fiber microlenses for efficient coupling to elliptical laser beams," IEEE Photon. Technol. Lett. 5, 184-186 (1993). [CrossRef]
  4. C. A. Edwards, H. M. Presby, and C. Dragone, "Ideal microlens for laser to fiber coupling," J. Lightwave Technol. 11, 252-257 (1993). [CrossRef]
  5. R. A. Modavis and T. W. Webb, "Anamorphic microlens for laser diode to single-mode fiber coupling," IEEE Photon. Technol. Lett. 7, 798-800 (1995). [CrossRef]
  6. H. Yoda and K. Shiraishi, "A new scheme of lensed fiber employing a wedge-shaped graded-index fiber tip for the coupling between high-power laser diodes and single-mode fiber," J. Lightwave Technol. 19, 1910-1917 (2001). [CrossRef]
  7. H. Yoda and K. Shiraishi, "Cascaded GI-fiber chips with a wedge-shaped end for the coupling between an SMF and a high-power LD with large astigmatism," J. Lightwave Technol. 20, 1545-1548 (2002). [CrossRef]
  8. Y. Irie, J. Miyokawa, A. Mugino, and T. Shimizu, "Over 200 mW 980 nm pump laser diode module using optimized high-coupling lensed fiber," in Tech. Dig. OFC/IOOC'99 (San Diego, CA, Feb. 1999), pp. 238-240.
  9. S.Y. Huang, S.M. Yeh, Y.K. Lu, H.H. Lin, and W.H. Cheng, "A novel scheme of lensed fiber employing a quadrangular-pyramid-shaped fiber endface for efficient coupling to high-power laser diodes," in Tech. Dig. Optical Fiber Communication Conf. (Los Angeles, CA, Feb, 2004), Paper FJ1.
  10. S. M. Yeh, Y. K. Lu, S. Y. Huang, H. H. Lin, C. H. Hsieh, and W.H. Cheng, "A novel scheme of lensed fiber employing a quadrangular-pyramid-shaped fiber endface for coupling between high-power laser diodes and single-mode fibers," J. Lightwave Technol. 22, 1374-1379 (2004). [CrossRef]
  11. S.M. Yeh, S.Y. Huang, and W.H. Cheng, "A novel scheme of conical-wedge-shaped fiber endface for high-power laser to single-mode fiber coupling," in Tech. Dig. Conference on Lasers and Electro-Optics (Baltimore, MA, May 2005), Paper CWN2.
  12. S. M. Yeh, S. Y. Huang, and Wood-Hi Cheng, "A new scheme of conical-wedge-shaped fiber endface for coupling between high-power laser diodes and single-mode fibers," J. Lightwave Technol. 23, 1781-1786 (2005). [CrossRef]
  13. J. W. Goodman, Introduction to Fourier Optics (San Francisco, CA, McGraw-Hill, 1968), Chap. 4-5.
  14. H. Kogelink, "Coupling and conversion coefficients for optical modes in quasi-optics," in Microwave Research Institute Symposia Series (New York Polytechnic Press, 1964), Vol. 14, pp. 333-347.
  15. L. Guo and R. Shankar Subramanian, "Mechanical removal in CMP copper using alumina abrasives," J. Electrochem. Soc. 151, 104-108 (2004). [CrossRef]
  16. Prime Optical Fiber Data Sheets (Hsinchu, Taiwan, R.O.C., 2003).
  17. Ultrapol 1200 Series Use Guide: Issue 5.0 (ULTRA TEC, Santa Ana, CA, 2002).
  18. Axcel Photonics, Marborough, MA 2006.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited