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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 36 — Dec. 20, 2006
  • pp: 9168–9175

Low-loss passive alignment of single-mode fibers in low-temperature cofired ceramics using CO2 laser fabricated U-grooves

K. M. Nowak, H. J. Baker, D. R. Hall, X. Liu, and A. Bell  »View Author Affiliations


Applied Optics, Vol. 45, Issue 36, pp. 9168-9175 (2006)
http://dx.doi.org/10.1364/AO.45.009168


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Abstract

We report a step toward optoelectronic integration on low-temperature cofired ceramics substrates in the form of fiber alignment U-grooves. The precision of the CO 2 laser machining of green state ceramic for this purpose is investigated. The groove-writing process with a speed of 1   mm / s was carried out in air at room temperature and ambient pressure. The process is to a large extent self-cleaning without any gas jet assist. By analysis of groove profiles after firing of a near-zero shrinkage green tape formulation, it is shown that the cutting accuracy is approximately 2   μm , which is at the fundamental limit set by the particle size ( 1 5 μ m ) . We demonstrate low-loss butt coupling of < 1   dB for single-mode fibers using the laser written U-grooves. The technique exhibits a potential for fabrication of low-cost fiber ribbon and fiber array connectors.

© 2006 Optical Society of America

OCIS Codes
(060.2390) Fiber optics and optical communications : Fiber optics, infrared
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(140.3390) Lasers and laser optics : Laser materials processing
(140.3470) Lasers and laser optics : Lasers, carbon dioxide
(220.1140) Optical design and fabrication : Alignment
(220.4000) Optical design and fabrication : Microstructure fabrication

History
Original Manuscript: July 17, 2006
Manuscript Accepted: August 18, 2006

Citation
K. M. Nowak, H. J. Baker, D. R. Hall, X. Liu, and A. Bell, "Low-loss passive alignment of single-mode fibers in low-temperature cofired ceramics using CO2 laser fabricated U-grooves," Appl. Opt. 45, 9168-9175 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-36-9168

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