A 1450nm optical bandpass filter with a full width at half maximum (FWHM) of 30nm is a specialized optical filter that only allows light within a narrow range of wavelengths centered around 1450nm to pass through, while blocking or attenuating all other wavelengths.

This type of optical filter can be used in various applications, such as telecommunications, spectroscopy, and sensing. In telecommunications, for example, 1450nm is a commonly used wavelength for optical communications in the fiber optic network. By using a bandpass filter with a narrow FWHM, it is possible to selectively filter out unwanted noise and interference and improve the signal-to-noise ratio of the communication link.

Coligh’s stock standard 1450nm FWHM 30nm optical bandpass filter feature:

• Feature: SWIR bandpass filter
• Center wavelength: 1450±10nm
• Angle of incidence: 0°
• FWHM: 30±10nm
• Blocking range: 200-2500nm
• Blocking depth: OD4-OD6
• Transmission average: Above 90%
• Thickness：0.55mm, 0.5mm, 0.7mm, 1.0mm, 1.1mm
• Size: φ12.5mm, φ25.4mm, φ50mm

Custom option:

• Bandwidth:20nm, 40nm or any bandwith client request
• Angle of incidence: Depend on request
• Blocking depth: OD2. OD3, OD4
• Size: round or square smaller than 100*100mm
• Material thickness: Depend on request
• Transmission and blocking rang: custom as per requirement or between 200nm to 1500nm