1550nm Polarization Maintaining Bandpass Filter

1550nm Polarization Maintaining Bandpass Filter

The 1550nm Polarization Maintaining Bandpass Filter is a fiber optic filter designed to transmit a selected wavelength band around 1550 nm while suppressing unwanted optical noise and out-of-band signals. Based on high-performance thin-film filter technology, it offers low insertion loss of ≤0.8 dB, high return loss of ≥50 dB, extinction ratio of ≥20 dB, and optical power handling options from 0.5 W up to 10 W. Standard 1550 nm pass bandwidth options include 2 nm, 5 nm, 10 nm, and 15 nm, with high out-of-band isolation for reliable filtering performance. The filter supports polarization maintaining fiber configurations and both-axis operation, making it suitable for fiber lasers, fiber amplifiers, fiber optic sensing, optical communications, and scientific research. Custom center wavelengths, bandwidths, power ratings, and fiber configurations are also available for specific application requirements.