The TFN Narrowband Tunable Optical filter combines TeraXion's fiber Bragg grating (FBG) technology and a thermally-tunable platform to create a tunable filter with unprecedented stability and resolution. The compact and reliable TFN is available in two models—reflection (R) and transmission-reflection (T-R). The narrowband option enables bandwidths from 2 GHz to 50 GHz, and the ultra-narrowband option enables bandwidths from 50 MHz to 500 MHz. Both models feature wavelength positioning precision of 2 pm (250 Mhz) at 1550 nm over a range of ±30 GHz around the center wavelength. These combined features make the TFN an ideal choice for a range of fine-precision applications.
The TFN tunable optical filter has been specifically designed for high-precision applications that require a high-optical isolation coupled with precise and accurate narrowband filtering. The TFN provides excellent sideband filtering and carrier suppression, making this tunable filter ideal for RF over fiber and advanced fiber-optic sensing systems.
- Exclusive FBG technology creates optical filters with high reflectivity and sharp-edged spectra. Our deep knowledge of FBG design and manufacturing also allows us to supply phase-shifted, ultra-narrow optical filters, having bandwidths as small as 50 MHz.
- The precise thermal control maintains the stability of the filter reflection and transmission spectra.
Top 6 Features
The TFN supports reflection bandwidths as narrow as 50 MHz.
The TFN is tunable over a range of ±30 GHz around the center frequency with a resolution of 2 pm.
Narrowband models can reach optical isolation as high as 25 dB.
Both the narrowband flat-top filter and ultra-narrowband notch filter have sharp-edged spectra for precision wavelength filtering.
TFN R and T-R modules can be cascaded to separate, redirect, and combine different wavelength peaks.
The TFN comes equipped with LabVIEW™-based control software that makes this tunable filter ready-made for advanced fiber-optic systems that require broadband tuning and excellent sideband suppression.
Critical technical specifications
Single value in the range of 700 nm to 2 100 nm
Bandwidth for Narrowband Configuration
Single value in the range of 2 GHz to 50 GHz
Bandwidth for Ultra-Narrowband Configuration
Single value in the range of 35 MHz to 500 MHz