1610nm + 1×4 Splitter + 4×FWDM Integrated ABS Module

Product Overview

The Splitter + 4×FWDM Integrated ABS Module is a customized passive optical assembly that combines a 1×4 equal optical splitter with four FWDM filter channels in a compact ABS package.

According to the internal optical structure, the 1610nm optical path first passes through a wavelength-selective filter and is then divided equally into four branches. Each branch is integrated with an FWDM filter to provide individual COM-A/B/C/D and 1270/1330nm A/B/C/D interfaces.

Key Features

• Integrated Splitter + FWDM Design
  Combines one 1×4 equal splitter and four FWDM filter branches within a single passive module.

• 1×4 Equal Optical Splitting
  The splitter section divides optical power equally into four branches at approximately 25% per branch.

• 1610nm Optical Path
  Provides a dedicated 1610nm wavelength interface for monitoring or wavelength-selective transmission according to the module architecture.

• Four 1270/1330nm FWDM Branches
  Provides four independent wavelength paths identified as A, B, C, and D.

• Low Insertion Loss on 1270/1330nm Paths
  Each COM-to-1270/1330 branch is specified at <1.0dB.

• Defined 1610nm Path Loss
  COM-A to 1610nm insertion loss is specified at <8.5dB.

• High Wavelength Isolation
  Isolation between 1610nm and 1270/1330nm paths is specified at >25dB.

• Low Polarization Dependence
  PDL is specified at <0.2dB.

• Compact ABS Housing
  Packaged in an 80 × 58 × 8mm enclosure.

• LC/UPC Optical Interfaces
  Uses LC/UPC connectors for external optical connection.

The supplied specification lists low insertion loss, low PDL, high isolation, channel uniformity, and reliability as product features. Splitter+4xFWDM in ABS 20241023

Applications

• Broadband networks
• PON networks
• CATV systems
• CWDM systems
• Optical access networks
• Optical monitoring systems
• Fiber distribution systems
• Passive wavelength routing
• Customized telecom optical assemblies
• Integrated splitter and WDM applications

The source document specifically lists Broadband Networks, PON Networks, CATV systems, and CWDM systems as intended applications. Splitter+4xFWDM in ABS 20241023

FAQ

Q1: What is the function of this Splitter + 4×FWDM module?

It combines two passive optical functions in one enclosure: a 1×4 optical power splitter and four FWDM wavelength-selective filters.

Q2: How is the internal optical structure arranged?

The 1610nm path first passes through a filter. The remaining optical path enters a 1×4 equal splitter, which creates four branches. Each branch is then connected to an FWDM filter for the corresponding A, B, C, or D channel.

Q3: Is the 1×4 splitter equal-ratio?

Yes. The structure diagram specifies 1/4, 25% Equal, meaning the splitter section distributes optical power equally among four branches.

Q4: What wavelengths are supported?

The overall specified operating wavelength range is 1260–1620nm. The module includes dedicated 1610nm and 1270/1330nm wavelength paths. Splitter+4xFWDM in ABS 20241023

Q5: What is the insertion loss of the 1270/1330nm paths?

The specification defines:

• COM-A → 1270/1330 A: <1.0dB
• COM-B → 1270/1330 B: <1.0dB
• COM-C → 1270/1330 C: <1.0dB
• COM-D → 1270/1330 D: <1.0dB Splitter+4xFWDM in ABS 20241023

Q6: What is the specified insertion loss to the 1610nm port?

The specification lists COM-A → 1610nm <8.5dB. Splitter+4xFWDM in ABS 20241023

Q7: What isolation performance is specified?

Isolation between the 1610nm and 1270/1330nm wavelength paths is specified at >25dB, while reflection isolation is >13dB. Splitter+4xFWDM in ABS 20241023

Q8: Does the module require electrical power?

No. The splitter and FWDM functions are passive optical functions and require no external electrical supply.

Q9: What connectors are used?

The standard configuration in the supplied specification uses LC/UPC connectors. Splitter+4xFWDM in ABS 20241023

Q10: Can other connector types be configured?

The ordering table lists FC/UPC, FC/APC, SC/UPC, SC/APC, LC/UPC, and LC/APC as connector-code options. Splitter+4xFWDM in ABS 20241023

Technical Specifications

The optical and mechanical values above are taken directly from the supplied specification table. Splitter+4xFWDM in ABS 20241023

Configuration & Customization Options

The standard configuration shown in the document uses:

The ordering table also defines connector options including FC/UPC, FC/APC, SC/UPC, SC/APC, LC/UPC, and LC/APC, as well as customized package options. Splitter+4xFWDM in ABS 20241023

Detailed Product Description

The Splitter + 4×FWDM Integrated ABS Module combines optical power splitting and wavelength-selective filtering within a single compact passive optical assembly.

At the input side, the 1610nm wavelength path is separated by an optical filter. The remaining signal is routed into a 1×4 equal splitter, where the optical power is distributed equally to four branches. Each branch is then connected to an individual FWDM filter, producing four sets of COM and 1270/1330nm wavelength interfaces.

This structure enables simultaneous optical power distribution and wavelength routing without requiring separate splitter and FWDM modules. As a result, the number of discrete components, fiber connections, and installation points within the optical system can be reduced.

The 1270/1330nm branches are specified with insertion loss below 1.0dB, while wavelength isolation between the 1610nm and 1270/1330nm paths exceeds 25dB. The device also provides ripple below 0.5dB, PDL below 0.2dB, return loss above 40dB, and directivity above 50dB. Splitter+4xFWDM in ABS 20241023

The complete optical assembly is packaged in an 80 × 58 × 8mm ABS enclosure with 0.9mm loose-tube fiber leads and LC/UPC connectors.

Application Scenarios

PON Optical Distribution and Monitoring

The integrated structure can be used in passive optical network architectures where optical power must be distributed to multiple branches while a 1610nm wavelength path is separated for monitoring or other wavelength-selective functions.

Broadband Access Network

The module combines several passive optical functions into one package, helping simplify equipment-side fiber routing in broadband access infrastructure.

Integrated CATV / Telecom Optical Systems

Where 1270/1330nm and 1610nm wavelength paths need to coexist within one optical infrastructure, the FWDM filters provide wavelength-selective routing while the splitter distributes the common optical signal to four branches.

Compliance

• Telcordia GR-1209-CORE-2001
• Telcordia GR-1221-CORE-1999
• ITU-T G.694.1
• RoHS

Splitter+4xFWDM in ABS 20241023

Why GracyFiber

GracyFiber supports customized passive optical modules integrating multiple optical functions into one mechanical package.

For Splitter + FWDM assemblies, configurations can be developed according to wavelength plan, splitter ratio, filter quantity, fiber type, connector type, pigtail length, port identification, and enclosure requirements.