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Controlling the cross-section of waveguides inscribed on bulk chalcogenide glasses using fast laser

TAMILARASAN SABAPATHY1, GAYATHRI SIVAKUMAR1, ARUNBABU AYIRIVEETIL1, AJOY K. KAR2, SUNDARRAJAN ASOKAN1,2,3,4,*

Affiliation

  1. Department of Instrumentation and Applied Physics, Institute of Science, Bangalore- 560 012, India
  2. School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
  3. Applied Photonics Initiative, Institute of Science, Bangalore- 560 012, India
  4. Robert Bosch Centre for Cyber Physical Systems, Indian Institute of Science, Bangalore- 560 012, India

Abstract

Waveguides have been fabricated on melt-quenched, bulk chalcogenide glasses using the femto-second laser inscription technique at low repetition rates in the single scan regime. The inscribed waveguides have been characterized by butt-coupling method and the diameter of the waveguide calculated using the mode-field image of the waveguide. The waveguide cross-section symmetry is analyzed using the heat diffusion model by relating the energy and translation speed of the laser. The net-fluence and symmetry of the waveguides are correlated based on the theoretical values and experimental results of guiding cross-section..

Keywords

Integrated optics devices, Laser materials processing and Chalcogenide glasses.

Citation

TAMILARASAN SABAPATHY, GAYATHRI SIVAKUMAR, ARUNBABU AYIRIVEETIL, AJOY K. KAR, SUNDARRAJAN ASOKAN, Controlling the cross-section of waveguides inscribed on bulk chalcogenide glasses using fast laser, Optoelectronics and Advanced Materials - Rapid Communications, 8, 11-12, November-December 2014, pp.1001-1004 (2014).

Submitted at: Aug. 14, 2013

Accepted at: Nov. 13, 2014