FWDM Filter for Thin Film Filter Technology and Wavelength Division Multiplexing
FTTX Filter WDM module extensively used in EDFA, Raman amplifiers, WDM networks, and fiber optics instrumentation is based on Thin Film Filter (TFF) technology. The device combines or separates light at different wavelengths in a wide wavelength range. It can expand the capacity of a single fiber to achieve bi-directional communication so that widely used in optical network upgrades and expansion, or introduce new comprehensive business, etc.
HJY provides filter-based wavelength division multiplexing (WDM) filter devices that are customized to the particular wavelength bands for your special applications. As you might know, the GEPON system itself works on 1310/1490, so the CATV signal here is delivered over the same fiber using 1550nm, and FWDM is a place where all this get's "mixed".
FWDM covers the following wavelength windows commonly used in optical fiber systems:
850/1310nm FWDM - for multi-mode fiber communication, CATV and testing instrumentation.
1310/1550nm FWDM - for WDM or DWDM optical communications.
1480/1550nm FWDM - for high-power DWDM optical amplifier and EDFA.
1510/1550nm FWDM - for DWDM multi-channel optical networks.
980/1550nm FWDM - for high performance DWDM optical amplifier and EDFA amplifier.
1310/1490/1550nm FWDM - for PON, FTTX and test instrument.
1310/1550/1625nm FWDM - for testing active fibers in service.
1310/1490/1550/1625nm FWDM - for combining or separating 1625nm channel with three triplex wavelength 1310nm, 1490nm and 1550nm so that 1625nm channel can be added into the existing triplex FTTH system
Dimensions (mm)
Product Parameters
| Wavelength | TX1550
RX1310/1490nm | Technology | TFF (Thin Film Filter) |
| Passband | 1540~1565nm | Reflection | 1260~1500&1590~1650 |
| Passband ripple | ≤0.30dB | IL @ Passband | ≤0.60dB |
| Reflection band ripple | ≤0.20dB | IL @Reflection | ≤0.40dB |
| Transmission isolation (adj channel) | ≥30dB | Transmission isolation (non-adj channel) | ≥50dB |
| Reflection isolation | ≥15dB | Polarization dependent loss | ≤0.1dB |
| Polarization mode dispersion | ≤0.2ps | Thermal Stability | ≤0.005N |
| Directivity | ≥50dB | Return loss | ≥45dB |
| Optical power handling | ≤500mW | Temperature | Operating -40 to 85°C
Storage -40 to 85°C |
| Fiber type | SMF-28e | Package dimension | Steel ∮5.5 x L34mm
ABS 90*20*10nm
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Application Diagram
The Filter WDM system uses a Multiplexer at the transmitter to combine several wavelengths together, each one carry different signal with bite-rate up to 10G and a demultiplexer at the receiver to split them apart. Due to its low insertion loss, low polarization dependence and high isolation, the filter is widely used in CATV system, FTTx and PON system, Fiber Communication, Test Instrument and etc.
Ordering Information
| HJY-FW | Package | Connector Type | U/A | Wavelength | Fiber Type | Fiber Length | Ports Type |
| FW | S: Steel B: ABS BOX Others | 0: No connector 1: LC 2: SC 3: FC 4: Others | U: UPC A: APC | T: Transmission wavelength range (nm) R: Transmission wavelength range (nm) | 9: 0.9mm
20:2.0mm
30:2.0mm Others | 005: 0.5+/-0.1m 01: 1.0+/-0.1m others | Com Reflect
Pass |
Note.
1) All the specifications are based on the devices without connectors, and guaranteed over wavelength, polarization and temperature.
2)PMD and chromatic dispersion values are guaranteed by design.
3) Specifications are subject to change without notice
Product Tags:
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100mA 55dB Filter FWDM Filter Thin Film Dwdm And Wavelength Division Multiplexing Images
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