A 1300nm optical bandpass filter with a Full Width at Half Maximum (FWHM) of 30nm permits light within a specific range of wavelengths centered around 1300nm to pass through efficiently. The FWHM value of 30nm indicates that the filter has moderate spectral resolution, allowing transmission of light within approximately a 30nm range around the central wavelength of 1300nm.

These types of filters are commonly used in telecommunications, optical fiber communication systems, and sensing applications. In telecommunications, for instance, they are used to isolate specific channels within the optical spectrum for data transmission. In sensing applications, they can be employed for tasks such as environmental monitoring or biomedical imaging, where specific wavelengths of light are used for analysis or detection purposes.

Coligh’s stock standard 1300nm FWHM 30nm optical bandpass filter feature:

• Feature: SWIR bandpass filter
• Center wavelength:1300±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: φ10nm,φ12.5mm, φ25.4mm, φ50mm

Custom option:

• Bandwidth:12nm, 20nm, 27nm, 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