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Optica Publishing Group
  • Optical Fiber Communications Conference
  • OSA Trends in Optics and Photonics (Optica Publishing Group, 2002),
  • paper ThC5

Thin film interference filters for 25 GHz channel spacing

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Optical demultiplexing of 25 GHz spaced channels presents a number of challenges to the optical DWDM component designer. In particular, technical challenges around insertion loss, chromatic dispersion, and filter squareness have prevented the adoption of thin film interference filter technology for 25 GHz or 50 GHz channel spaced systems. This paper discusses the first experimental results of five and six cavity thin film optical filters for 25 GHz spaced DWDM systems. Power penalty due to dispersion is simulated for a cascade of eight 25 GHz six cavity filters. Thin film filters are shown to be a practical solution for optical multiplexing and demultiplexing for 25 GHz channel spaced DWDM systems.

© 2002 Optical Society of America

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