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Band-pass Filters
Product description：
Band-pass filter is a passive device that passes the wavelength within a certain range and attenuates wavelengths outside the range. The band-pass filters produced by CASTECH are divided into polarization-maintaining type and non-polarization-maintaining type. There is an extremely flat passband without amplification or attenuation, and the waves outside the passband are attenuated within a certain range. Based on the thin film filter technology, the band-pass filters have the characteristics of high isolation and low insertion loss.
Applications：
●Fiber laser
●Fiber optic sensing
●ASE spectrum control
●Fiber grating application
Schematic diagram of bandpass filter
Products
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Band-pass Filters
- Band-pass filter is a passive device that passes the wavelength within a certain range and attenuates wavelengths outside the range. Non- or polarization-maintaining type are available from CASTECH.
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Product description：
Band-pass filter is a passive device that passes the wavelength within a certain range and attenuates wavelengths outside the range. The band-pass filters produced by CASTECH are divided into polarization-maintaining type and non-polarization-maintaining type. There is an extremely flat passband without amplification or attenuation, and the waves outside the passband are attenuated within a certain range. Based on the thin film filter technology, the band-pass filters have the characteristics of high isolation and low insertion loss.
Applications：
●Fiber laser
●Fiber optic sensing
●ASE spectrum control
●Fiber grating application
Schematic diagram of bandpass filter
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Filter Model Number：CBPF-w-f-b-l-h |
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Wave Length(w) |
Passband Bandwidth(f) |
Fiber Type(b) |
Pigtail Length(l) |
Housing(h) |
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980 nm 1030 nm 1064 nm 1550 nm ... |
2 nm 5 nm 9 nm ... |
Non-Polarization-Maintaining |
1 (Hi1060) 2 (SMF-28e) 3 (10/125) ... |
80 (800 mm) 100 (1 m) 150 (1.5 m) … |
A01 A02 A03 … |
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Polarization-Maintaining |
P1 (PM980) P2 (PM1550) ... |
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Typical Specifications |
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Center Wavelength |
Passband Bandwidth(0.5 dB) |
Cut-off Bandwidth (25 dB) |
Insertion Loss |
Withstand Power |
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1064 nm |
2nm，8nm，25nm |
12nm，22nm，50nm |
1.2 dB |
300 mW |
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1550 nm |
2nm，8nm，25nm |
12nm，22nm，50nm |
0.8 dB |
300 mW |
Housing dimensions(mm)：
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