Narrow bandwidth (0.8 nm)
High tuning resolution (0.05 nm)
Broad tuning range (1535–1565 nm)
Low insertion loss (1.5 dB typical)
Low back-reflection (-50 dB max)
Newport’s Tunable Bandpass Fiber Optic Filter is used to adjust the center wavelength of a narrow passband within a 30 nm range around 1550 nm.
A 0.8 nm tunable filter model is offered, having a 1535–1565 nm tuning range. The filter features high isolation, low insertion loss, low back-reflection and low polarization sensitivity.
A thin film coating interference filter, located between two angled fiber optic collimators, is used to select the wavelength of interest, by adjusting the tilt angle of the filter with a high-precision micrometer having 0.05 nm resolution.
Applications for Newport’s Tunable Bandpass Filter include: sideband noise suppression in erbium-doped fiber amplifiers (EDFA) and in tunable laser transmission systems; as well as wavelength selection for test and measurement applications.
| Model | TBF-1550-1.0 |
|---|---|
| Wavelength Tuning Range (nm) | 1535 to 1565 |
| Tuning Resolution, Typical (nm) | 0.05 |
| 0.5 dB Bandwidth, Typical (nm) | 1.0 |
| 0.5 dB Bandwidth, Maximum (nm) | 1.2 |
| 20 dB Bandwidth, Maximum (nm) | 3.5 |
| Input Power, Maximum (mW) | 500 |
| Insertion Loss, Typical (dB)(1) | 1.5(3) |
| Insertion Loss, Maximum (dB)(1) | 3.0(3) |
| Back-Reflection, Maximum (dB) | -50 |
| Polarization Dependent Loss, Typical | 0.05 dB, typical @ 1565 nm; 0.3 dB @ 1535 nm |
| Center I Stability (nm/°C) | 0.005 |
| Thermal Limit (dB/°C) | 0.005 |
| Fiber Type(2) | 9/125 µm Singlemode |
| Operating Temperature () | +15 to +65 |
| Storage Temperature Range (°C) | -40 to +70 |
1) Without fiber optic connectors
2) Filters come with standard 1 m, 3 mm loose tube jacketed fiber pigtails
3) Measured at 1565 nm [dB]
[in. (mm)]