12F ELSFP Testing Cable

12F ELSFP Testing Cable

12F ELSFP Testing Cable is a PM fiber cable assembly designed for external laser source testing in CPO and NPO systems.
It provides stable, low-loss connectivity for ELSFP interfaces.
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Product Profile

 

12F ELSFP Testing Cable is a single-sided fiber optic test assembly designed for external laser source interconnect testing in CPO and NPO architectures. Featuring a compact ELSFP interface with a 12-fiber MT ferrule, it enables reliable mating with the corresponding host-side optical connector for test, validation, and system integration.

Precision Interface

Designed for high-precision ELSFP optical connectivity, supporting stable and repeatable test connections in advanced external-laser architectures.

12-Fiber MT Design

A single-sided 12F configuration supports compact fiber routing and efficient connection to ELSFP host interfaces.

Customizable Assembly

Fiber type, cable length, polarity, boot style, and opposite-end termination can be tailored to the test fixture or system requirement.

Applications: External laser source testing, CPO switch validation, NPO optical interconnect evaluation, optical engine testing, production-line verification, and high-density fiber optic test fixtures.

Tags: 12F ELSFP Testing Cable, ELSFP Fiber Cable Assembly, External Laser Source Test Cable, CPO Testing Cable, NPO Optical Interconnect, 12F MT Fiber Cable, ELSFP Host Interface Cable, Optical Engine Test Assembly, High-Density Fiber Optic Testing

 

What Is an ELSFP Connector?

 

ELSFP stands for External Laser Small Form Factor Pluggable. It is a high-precision optical connectivity solution developed for Co-Packaged Optics (CPO) and external laser source architectures, where the laser source is separated from the optical engine or switch ASIC.

product-1784-660

Host and Module Connector System

An ELSFP connection consists of a host connector and a module connector. The host connector is integrated into the CPO equipment or PCB, while the module-side connector is attached to the external laser source cable assembly. When connected, the two interfaces align precisely to establish the optical link.

Blind-Mate Connection

Self-alignment features support accurate blind mating, simplifying installation and maintenance in compact equipment environments.

MT Ferrule Platform

The ELSFP format can accommodate up to two low-loss MT ferrules in one connection, supporting high-density optical interconnect requirements.

Serviceable Laser Architecture

By placing the laser source outside the CPO switch, ELSFP supports easier serviceability and helps address thermal-management challenges in high-performance optical systems.

 

 

Specifications

 

Parameter Specification
Fiber Count 12 Fibers
Fiber Type Polarization-Maintaining (PM) Fiber, such as PM1330
Polarization Extinction Ratio (PER) ≥ 22 dB
Insertion Loss (IL) ≤ 0.35 dB
Return Loss (RL) ≥ 50 dB
Polarization Axis Alignment Angle ± 3°
MT Ferrule Length ≥ 7.90 mm
End Face Grade A / B / C
Product Features

 

PM Fiber Construction
Built with polarization-maintaining fiber options to help preserve polarization performance in external laser source test links.
Precision MT Ferrule Termination
Precision-terminated MT ferrule construction supports accurate fiber positioning and consistent optical mating during demanding test procedures.
Stable Test Connectivity
Designed to support reliable, repeatable optical connections for validation, characterization, and production-line test environments.
End-Face Options
Multiple end-face grade options are available to match different test requirements and application conditions.
Flexible Customization
Cable construction, polarity, length, boot style, and opposite-end termination can be configured to suit dedicated test fixtures and system layouts.
Clean and Protected Delivery
Each assembly can be supplied with protected connector end faces to help maintain cleanliness during handling, transport, and test setup.
Applications

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CPO (Co-Packaged Optics)
Supports external laser source interconnect testing and optical-link validation in co-packaged optics architectures.
NPO (Near Packaged Optics)
Suitable for optical interface verification and system-level evaluation in near-packaged optics applications.

 

 
100% Tested Before Delivery
 

 

Our products undergo comprehensive testing before shipment to ensure high-quality delivery to our customers.

 

MT IL RL

 

IL/RL Test

MPO

 

Polarity Test

MPO End surface Test

 

End-surface Test

High and low temperature cycle

 

Temperature Test

 

 

Certificates

 
CE-Patchcord

CE

CPR

CPR

 
ISO

ISO

 
RoHS-Patchcord-PLC

RoHS

FAQ

 

How is an ELSFP Testing Cable different from a conventional MT test cable?
Unlike a conventional MT test cable, an ELSFP Testing Cable is built around the dedicated ELSFP optical interface for external laser source architectures. It is designed to mate with the corresponding ELSFP host-side connection and supports PM fiber-based testing for CPO and NPO applications.
Why use an ELSFP connection?
ELSFP enables the laser source to be located outside the CPO switch or optical engine, helping address thermal-management needs and supporting a more serviceable system architecture.
What type of fiber is used?
This testing cable is designed for polarization-maintaining fiber applications. PM fiber options, such as PM1330, can be selected according to the required operating wavelength and test setup.
How many MT ferrules can an ELSFP connector support?
The ELSFP connector system can accommodate up to two MT ferrules in one connection. This product is configured as a single-sided 12F testing cable; other configurations can be discussed based on the application requirement.

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