High Precision Fiber WDM Filter Red / Blue Optical Fiber Filter For FTTx Access Networks

GRACYFIBER's Red/Blue Band Fiber WDM Filter is an optical wavelength management device based on high-performance thin-film filter (TFF) technology, designed for precise combining and splitting of multi-band signals over a single fiber. This filter comprehensively covers an ultra-wide spectrum of 1260–1620 nm, supporting not only Red/Blue band wavelength separation in the core C-band but also providing various classic wavelength combinations such as 1310/1550 nm, 1550/980 nm, and 1310/850 nm. Utilizing precision manufacturing processes for an all-fiber structure, this device features ultra-low insertion loss, high channel isolation, and extremely low polarization-dependent loss (PDL). Whether integrated into miniature optical modules or deployed in metropolitan area networks, FTTx access networks, or complex system-level optical test platforms, it ensures efficient routing and absolute stability of backbone traffic.

(Designed specifically to solve your pain points of crosstalk and multi-service coexistence in single-fiber bidirectional transmission)

This filter is a key component for achieving fiber optic resource multiplexing and optical path protection:

• C-band Red/Blue Band Separation: Core frequency division node in single-fiber bidirectional (BiDi) DWDM systems and long-haul optical transmission backbone networks.
• Optical Amplifier and Laser System Integration: Efficiently combines 980 nm pump light and 1550 nm signal light in the EDFA.
• 1310/1550 nm Service Coexistence: Perfectly achieves lossless superposition of traditional data services and analog video signals on the same fiber.
• Hybrid PON and FTTx Access Networks: Manages and routes specific wavelengths of different generations of PON networks (such as GPON and XGS-PON).
• Optical Monitoring and Protection Paths: Separate specific monitoring wavelengths (e.g., 1625/1650 nm) in a system-level test platform.
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