Large refractive index modulation tilted holographic planar structured grating based on dichromated gelatin

Jihong Zheng, Shizhuo Yin, Zhiwen Liu, Jimmy Yao, Jae Hun Kim, Chia En Yang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A new type grating, tilted holographic planar structured dichromated gelatin (DCG) grating with large refractive index modulation, is presented in this paper. The grating is inscribed by superposing two coherent laser beams from the front and the thin side surfaces, respectively. The relationship between the tilted angle and the three types of coupling modes is analyzed when coupling with fiber. Besides, the couple mode theory and experimental investigation are applied on major characteristics analysis of the radiation mode DCG grating of tilted angle 45°. Due to the tilted planar structured grating has large refractive index modulation, it not only offers convenience for connecting (or integrating) with other fiber or waveguide-based devices, but also provide some special characteristics such as low wavelength selectivity (which is required for some applications such as multiple spectrum biomedical imaging). Therefore, this unique grating device has a wide application in optical fields such as for the waveguide-based, parallel, multiple spectrum imaging system.

Original languageEnglish (US)
Pages (from-to)1762-1766
Number of pages5
JournalOptics Communications
Volume282
Issue number9
DOIs
StatePublished - May 1 2009

Fingerprint

gelatins
Diffraction gratings
Gelatin
Refractive index
Waveguides
Modulation
gratings
refractivity
Holographic gratings
modulation
Fibers
Imaging systems
Laser beams
Imaging techniques
Radiation
Wavelength
waveguides
fibers
coupled modes
selectivity

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

Zheng, Jihong ; Yin, Shizhuo ; Liu, Zhiwen ; Yao, Jimmy ; Kim, Jae Hun ; Yang, Chia En. / Large refractive index modulation tilted holographic planar structured grating based on dichromated gelatin. In: Optics Communications. 2009 ; Vol. 282, No. 9. pp. 1762-1766.
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Large refractive index modulation tilted holographic planar structured grating based on dichromated gelatin. / Zheng, Jihong; Yin, Shizhuo; Liu, Zhiwen; Yao, Jimmy; Kim, Jae Hun; Yang, Chia En.

In: Optics Communications, Vol. 282, No. 9, 01.05.2009, p. 1762-1766.

Research output: Contribution to journalArticle

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T1 - Large refractive index modulation tilted holographic planar structured grating based on dichromated gelatin

AU - Zheng, Jihong

AU - Yin, Shizhuo

AU - Liu, Zhiwen

AU - Yao, Jimmy

AU - Kim, Jae Hun

AU - Yang, Chia En

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AB - A new type grating, tilted holographic planar structured dichromated gelatin (DCG) grating with large refractive index modulation, is presented in this paper. The grating is inscribed by superposing two coherent laser beams from the front and the thin side surfaces, respectively. The relationship between the tilted angle and the three types of coupling modes is analyzed when coupling with fiber. Besides, the couple mode theory and experimental investigation are applied on major characteristics analysis of the radiation mode DCG grating of tilted angle 45°. Due to the tilted planar structured grating has large refractive index modulation, it not only offers convenience for connecting (or integrating) with other fiber or waveguide-based devices, but also provide some special characteristics such as low wavelength selectivity (which is required for some applications such as multiple spectrum biomedical imaging). Therefore, this unique grating device has a wide application in optical fields such as for the waveguide-based, parallel, multiple spectrum imaging system.

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