1.Product Descriptions :
| Characteristics: | 1550nm Narrow bandpass filters |
| Central Wavelength (CWL): | 1550nm |
| Peak Transmittance: | >90% |
| Full Width at Half Maximum(FWHM): | 10-60nm |
| Cut-off depth: | OD2/OD3 |
| Dimension: | Customized |
| Thickness: | Customized |
| Remark: | Can do customization per requirement |
2. Measured Spectral curve
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Picture 1: BP1550-10nm Spectral Curve |
3.What is typical application for 1550nm narrow bandpass filters?
The 1550nm narrow bandpass filter is an optical component that permits light within a very narrow range around the 1550nm wavelength to pass through while blocking light of other wavelengths.
- LiDAR represents one of its primary applications, where the filter suppresses background light interference and enhances detection signal-to-noise ratio and accuracy.
- Additionally, since the 1550nm wavelength features low transmission loss in optical fibers, it also sees widespread use in fields such as fiber optic communications, fiber optic sensing, fiber lasers, and spectral analysis.
4.What is key parameter when choose for right Narrow bandpass filters:
When selecting a Narrow bandpass filters:
- the center wavelength (CWL) will be one of key parameter to be designated, with a tolerance of generally +/-3nm or +/5nm which depend on the user inquiry.
- Secondly, Full Width at Half Maximum(FWHM) means the transmittance range, for those FWHM is short, normally called narrow bandpass filters which no united definition and typically for lower than 10nm.
- then, Peak and Average Transmittance, e.g 90%,95%…etc. higher transmittance might need Anti-reflective(AR) coating.
other Bandpass filters in stock from Liyuan Optoelectronics: LP430 LP500 LP560 LP600 LP650 LP800。。。etc.
