Fabrication and optimization of one-to-two and two-to-two optical directional couplers in glass using a femtosecond laser

DOIResolve DOI: http://doi.org/10.1117/12.567083
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Proceedings titleApplications of photonic technology : closing the gap between theory, development, and application : 7A--Photonics North 2004: Optical components and devices
Series titleProceedings of SPIE; Volume 5577
ConferencePhotonics North 2004: Optical Components and Devices, 27 September 2004, Ottawa, Ontario, Canada
Pages777783; # of pages: 7
Abstract1×2 and 2×2 optical waveguide directional couplers were fabricated in a silica glass sample by a femtosecond laser and characterized at the wavelength of 1.5μm. The coupling coefficient was determined by systematically writing series of 1 X 2 directional couplers. After the process and design optimization, the two types of waveguide directional couplers successfully achieved the coupling ratio of about 3.0dB with the average IL and PDL 6.55±0.25dB and 0.28±0.12dB respectively. The multi-scan writing technique with inter-scan shifts was used to reshape the magnitude and profile of the refractive index change so that excess loss of S bends and the PDL for such couplers were substantially reduced.
Publication date
AffiliationNational Research Council Canada; NRC Institute for National Measurement Standards
Peer reviewedNo
NPARC number12346586
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Record identifiercc99f470-cb69-43fd-a4d3-bdbfddf02481
Record created2009-09-17
Record modified2017-09-13
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