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1550nm Single-Mode Cascaded FBT Coupler Module (5/95 & 50/50 Combination, Differential Optical Path Design)

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1550nm Single-Mode Cascaded FBT Coupler Module (5/95 & 50/50 Combination, Differential Optical Path Design)

Detail Information

Product Description

Detail Information

Operating Wavelength:

1550 Nm

Fiber Type:

G657A1 Single-mode

Optical Path Difference:

10.0 ± 1.0 Mm

Package Dimensions:

80×58×8 Mm

Highlight:

1550nm single-mode FBT coupler module

cascaded FBT coupler differential design

FBT coupler 5/95 50/50 combination

Product Description

1550nm Single-Mode Cascaded FBT Coupler Module (5/95 & 50/50 Combination, Differential Optical Path Design)

1. Product Overview

This 1550nm single-mode FBT coupler module is constructed by cascading 1×2 (5/95), 1×2 (50/50), and 2×2 (50/50) couplers. It utilizes G.657A1 single-mode fiber and features precise control over the differential length between the two optical paths.

2. Product Features

Utilizes a three-stage FBT coupling structure: 1×2 5/95, 1×2 50/50, and 2×2 50/50
Operating wavelength of 1550 nm; suitable for standard single-mode optical communication systems
Uses G657A1 bend-insensitive single-mode fiber, facilitating compact routing and module packaging
5/95 coupler used for power distribution between the main optical path and the sampling path
Critical optical path difference controlled at Path 1 – Path 2 = 10.0 ± 1.0 mm
Total fiber length of the module is approximately 2 m; lengths L1–L5 can be adjusted based on specific splicing and optical path requirements
Input fiber length: 300 ± 20 mm
OUT-1 output fiber length: 400 ± 20 mm
OUT-2 and OUT-3 output fiber lengths: 120 ± 20 mm
Housed in an 80×58×8 mm ABS box package for easy internal equipment installation
Equipped with 0.9 mm yellow, white, and red color-coded loose tubes for easy port identification
FC/APC connectors installed on the input and all output ports
Customization available for fiber length, coupling ratio, connectors, and packaging format

1550nm Single-Mode Cascaded FBT Coupler Module (5/95 & 50/50 Combination, Differential Optical Path Design)

3. Applications

1550 nm fiber-optic interferometric systems
Differential optical path and optical path matching modules
Fiber-optic sensing and precision measurement
Coherent optical communication and coherent detection systems
Optical power sampling and signal monitoring
Fiber laser and optical amplifier systems
Laboratory optical path setup and scientific research equipment
Customized integrated passive optical component systems

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Fiber Collimator

Fiber Optic Coupler

PBS/PBC

Optical Isolator

Optical Circulator

CWDM Multiplexer

DWDM Multiplexer

Variable Optical Attenuator

PM Patch Cord

MPO Patch Cord

Optical Polarizer

WDM & Optical Filtering

DWDM Mux Demux

WDM Filter

FWDM

UCWDM

O-Band WDM

Reflective WDM (High ISO)

Optical Fiber Array

PM Fiber Array

Mode Field Diameter Fiber Array

Lensed Fiber Array

2D Fiber Array

Custom Fiber Array

Network Visibility

Photonic Integration

High Density Optical Connectivity

Fiber Optic Components

Polarization Maintaining

Fiber Collimator

Fiber Optic Coupler

PBS/PBC

Optical Isolator

Optical Circulator

CWDM Multiplexer

DWDM Multiplexer

Variable Optical Attenuator

PM Patch Cord

MPO Patch Cord

Optical Polarizer

WDM & Optical Filtering

DWDM Mux Demux

WDM Filter

FWDM

UCWDM

O-Band WDM

Reflective WDM (High ISO)

Optical Fiber Array

PM Fiber Array

Mode Field Diameter Fiber Array

Lensed Fiber Array

2D Fiber Array

Custom Fiber Array

Network Visibility

Photonic Integration

High Density Optical Connectivity

Fiber Optic Components

products details

Polarization Maintaining

Fiber Collimator

Fiber Optic Coupler

PBS/PBC

Optical Isolator

Optical Circulator

CWDM Multiplexer

DWDM Multiplexer

Variable Optical Attenuator

PM Patch Cord

MPO Patch Cord

Optical Polarizer

WDM & Optical Filtering

DWDM Mux Demux

WDM Filter

FWDM

UCWDM

O-Band WDM

Reflective WDM (High ISO)

Optical Fiber Array

PM Fiber Array