1550nm

A 1550nm bandpass filter is an optical filter designed to specifically transmit light around the wavelength of 1550 nanometers (nm) while blocking other wavelengths. It acts like a gatekeeper, allowing only frequencies within a certain range to pass through freely. Here's a breakdown of its key features and applications:

Function:

  • Transmits light with wavelengths close to 1550nm with high efficiency (e.g., 90% or more).
  • Blocks light with wavelengths significantly shorter or longer than 1550nm.
  • The bandwidth (FWHM) of the filter defines the range of wavelengths transmitted around 1550nm.Narrower bandwidth offers higher selectivity but lower overall transmission.

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