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Diffraction Gratings for Telecommunication

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  • Diffraction Gratings for Telecommunication

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Diffraction Gratings for Telecommunication

 

  • Material from DUV to IR
  • Custom dimension and shapes
  • Wafer type: Plano or Prism
  • Grating type: Transmission or reflection grating
  • Line density: Up to 3000line/mm
  • Line density uniformity: ± 0.5 line/mm
  • Wavelength range: 1525-1575nm
  • Central wavelength: 1550 nm
  • Angle of incidence(AOI): Littrow or Customized
  • Optical polarization: TE/TM
  • Diffraction efficiency: >94.0%
  • Clear aperture: ≥95%
  • Wavefront distortion: λ/4@632.8nm
  • Surface quality: 40-20 S/D
  • Parallelism:< 0.1°
  • Coating: Au or Dielectric coatings

 

CASTECH typically employs fused silica or ULE characterized with low absorption and superior stability for the fabrication of gratings. Other optical glass are also available upon request.

Our high DE reflection grating is ideal for WSS and other applications in optical communication industry. Generated by our state-of-art holographic, iron etching and replication technology, the precise realization of grating designs is enabled that provides high diffraction efficiency and perfect uniformity. The replicas copied from the master grating have the same performance such as low light scatter, extreme environmental stability, excellent groove uniformity at a lower price. Customized solution is available from prototype building to high volume production.

 

Kimmon He-Cd (Helium Cadmium) Laser Holographic System

 


 

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