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| Brand Name: | Gracyfiber |
| MOQ: | 100pcs |
| Payment Terms: | T/T |
High-Performance Filter-Chip Wavelength Division Multiplexer (FWDM Multiplexer)
GRACYFIBER's high-performance filter-type wavelength division multiplexer (FWDM) is a core passive device specifically designed for FTTH (Fiber to the Home) networks that integrate GPON/XGS-PON and CATV. Based on mature thin-film filter (TFF) technology, this module can efficiently separate or combine optical signals of different wavelengths within a single fiber, such as perfectly separating 1310 nm data signals from 1550 nm video signals. This series supports an extremely wide operating wavelength range of 1260~1620 nm, featuring extremely high channel isolation and ultra-low insertion loss. Whether you are developing compact ONU/ONT terminal modules or deploying outdoor CATV optical nodes, our diverse packaging options provide high reliability and deployment flexibility for your large-scale fiber optic network construction.
(Designed to overcome power budget constraints and signal crosstalk in FTTH network upgrades)
| Parameter | Unit | Value | ||||||
|---|---|---|---|---|---|---|---|---|
| Operating Wavelength | nm | 1260~1620 | ||||||
| Pass Band Wavelength | nm | 1310 (±50) | 1550 (±80) | 1400~1572 | 1530-1565 | 1260~1620 | 1600~1670 | |
| Reflect Band Wavelength | - | 1550 ( ±80) | 1310 ( ±50) | 1575~1680 | 1260-1500 &1575-1660 |
1640~1670 | 1260~1590 | |
| Insertion Loss | Max.Pass | dB | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 |
| Max.Reflect | dB | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | |
| Isolation | Transmission | dB | ≥30 | ≥30 | ≥30 | ≥30 | ≥40 | ≥30 |
| Reflection | dB | ≥15 | ≥15 | ≥15 | ≥15 | ≥15 | ≥15 | |
| Ripple | Max | dB | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| PDL | Max | dB | 0.10 | |||||
| Return Loss | Min | dB | 40 | |||||
| Directivity | Min | dB | 50 | |||||
| Power Handing | Max | mW | 300 | |||||
| Fiber Type | - | G67A1/ A2/ B3 or SMF-28 | ||||||
| Fiber Coating | um | 250 µm / 900 µm loose tube | ||||||
| Fiber Length | mm | 1000 | ||||||
| Connector | - | LC/UPC or Customized | ||||||
| Dimensions (HxWxD) | mm | 90x20x10, 120x80x18, 155x129x29, 482x250x44 | ||||||
| Operating Temperature | °C | -5~65 | ||||||
| Storage Temperature | °C | -40~85 | ||||||
Solved Pain Points/Value: Despite its extremely low typical insertion loss, its rigorously tested maximum pass loss is only 0.6 dB, and its maximum reflection loss is only 0.4 dB. Combined with an extremely low polarization dependent loss (PDL) of up to 0.10 dB, it saves extremely valuable optical power budget for your power-sensitive long-haul PON networks, ensuring clients receive the strongest possible signal.
Solved Pain Points/Value: For specific broadband configurations, transmission isolation can reach ≥30 dB or even ≥40 dB, and reflection isolation ≥15 dB (system-level high isolation up to 45 dB). This completely shields against crosstalk between high-power video signals and weak data signals when CATV and broadband data are transmitted on the same network, preventing image noise and network packet loss.
Solved Pain Points/Value: Supports full-band operation from 1260 to 1620 nm, and pre-sets various transmit/reflection band combinations (e.g., transmit 1550 nm / reflect 1310 nm, or transmit 1530-1565 nm, etc.). This allows your network architecture to smoothly support wavelength evolution from traditional GPON to 10G PON and even XGS-PON, achieving true "Future-Proof".
Solved Pain Points/Value: Possesses a minimum of 50 dB directivity and a minimum of 40 dB return loss, with a maximum optical power handling capacity of 300 mW. It supports stable operation in a standard wide temperature range of -5°C to 65°C (and can be extended to -20°C to 75°C as needed), easily coping with harsh outdoor wall-mounted enclosures or junction boxes.
Our FWDM devices are cost-effective tools for achieving multi-service converged transmission over a single fiber:
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