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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 27, Iss. 5 — May. 1, 2010
  • pp: 1131–1138

Scalability and stability of a coherent fiber laser array using fiber couplers

Si-si Zhao, Zhen Wang, and Zhi-yong Wang  »View Author Affiliations


JOSA B, Vol. 27, Issue 5, pp. 1131-1138 (2010)
http://dx.doi.org/10.1364/JOSAB.27.001131


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Abstract

A coherent fiber laser array using fiber couplers is discussed. The array modes are analyzed and determined using coupled mode theory. A numerical analysis of the phase property for a 19-fiber array is performed and the results show that the array can achieve a quasi-in-phase state. The stability and the scalability of coherent combination are investigated by simulations via changing the fiber grating reflectivity, the pump parameter, and the cavity length. Considering the mutual coupling between fiber lasers and the mismatch among fiber lengths, we trace the relative phases between array elements and further provide the evidence of coherent combining for the 19-fiber array. With the increase in the fiber elements, although the system is required to operate at a lower grating reflectivity for achieving a stable laser output, the output power increases nonlinearly.

© 2010 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(140.3290) Lasers and laser optics : Laser arrays
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3298) Lasers and laser optics : Laser beam combining
(140.3325) Lasers and laser optics : Laser coupling
(140.3425) Lasers and laser optics : Laser stabilization

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 8, 2009
Revised Manuscript: March 7, 2010
Manuscript Accepted: March 15, 2010
Published: April 29, 2010

Citation
Si-si Zhao, Zhen Wang, and Zhi-yong Wang, "Scalability and stability of a coherent fiber laser array using fiber couplers," J. Opt. Soc. Am. B 27, 1131-1138 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-5-1131

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