2005

• Engan, Helge Emil; Bløtekjær, Kjell. (2005) Acousto-optic interactions in few-mode optical fibers.
  Academic chapter/article/Conference paper

2003

• Langli, Bjørnar; Bløtekjær, Kjell. (2003) Effect of Acoustic Birefringence on Acoustooptic Interaction in Birefringent Two-Mode Optical Fibers. Journal of Lightwave Technology
  Academic article

2000

• Langli, Bjørnar; Bløtekjær, Kjell. (2000) Measurement of the Differential Dispersion Coefficient in Two-Mode Fibers. Journal of Lightwave Technology
  Academic article

1999

• Løvseth, Sigurd Weidemann; Kringlebotn, Jon Thomas; Rønnekleiv, Erlend; Bløtekjær, Kjell. (1999) Fiber distributed-feedback lasers used as acoustic sensors in air. Applied Optics
  Academic article

1998

• Løvseth, Sigurd Weidemann; Bløtekjær, Kjell; Kringlebotn, Jon Thomas. (1998) Contributions to wavelength shifts of DFB fiber lasers used as acoustic sensors in air. Proceedings of SPIE, the International Society for Optical Engineering
  Academic article
• Langli, Bjørnar; Östling, Dan; Bløtekjær, Kjell. (1998) Axial variations in the acoustooptic phase-mismatch coefficient of two-mode fibers. Journal of Lightwave Technology
  Academic article

1997

• Bløtekjær, Kjell. (1997) Theoretical concepts of a novel Vernier-based fringe-counting fibre optic sensor. IEE Proceedings - Optoelectronics
  Academic article
• Langli, Bjørnar; Sinha, Pranay G.; Bløtekjær, Kjell. (1997) Acousto-optic mode coupling of partially coherent light in tow-mode optical fibers. Optical Review
  Academic article

1993

• Bløtekjær, Kjell. (1993) Research on transverse modulation tubes at the Norwegian Defence Research Establishment. Fields, waves, and beams : a tribute to Tore Wessel-Berg on hisseventieth birthday. (FYS.EL.-rapport & 1993:01)
  Popular scientific article
• Bløtekjær, Kjell. (1993) Strain distribution and optical propagation in tension-coiled fibers. Optics Letters
  Academic article

1992

• Bløtekjær, Kjell. (1992) Thermal noise in optical fibers and its influence on long distance coherent communication systems. Journal of Lightwave Technology
  Academic article