800/400/200/100G fiber optic loopback

Loopback

C-LIGHT Loopback device (fiber optic loopback) is a critical testing tool in optical communication networks, enabling self-checking and fault localization by redirecting optical signals from the transmitter (TX) directly to the receiver (RX). Compatible with LC, SC, FC, MTP/MPO connectors and single/multi-mode fibers (PC/APC interfaces), it is widely used in 40G/100G/200G/400G/800G networks, data center interconnects, and optical module performance validation. Key capabilities include detecting power loss, validating transceiver sensitivity, and assessing link integrity, featuring low loss, millisecond-level response, and AI-driven intelligent operations

3-year warranty

Long term maintenance

Technical Support

Professional free technical guidance

100% detection

Each module is 100% tested

Spot stock

Always in stock, short delivery time

Technical Support

Tel：+86 158 1857 3751

Online Consultation

Product Details

Support & Service

Quality Inspection

Quality Certification

Product Details

Form Factor	Part No.	Fiber Type	Data Rate	Wavelength	Distance	Connector	Case Temperature	Note
OSFP	CLOSFP800GLP	Loopback	800G	-		-	Com./Ind.
QSFPDD	CLQSFPDD800GLP	Loopback	800G	-		-	Com./Ind.
QSFPDD	CLQSFPDD400GLP	Loopback	400G	-		-	Com./Ind.
QSFP112	CLQSFP400GLP	Loopback	400G	-		-	Com./Ind.
QSFP56	CLQSFP200GLP	Loopback	200G	-		-	Com./Ind.
QSFP28	CLQSFP100GLP	Loopback	100G	-		-	Com./Ind.
QSFP+	CLQSFP40GLP	Loopback	40G	-		-	Com./Ind.
SFP28	CLSFP25GLP	Loopback	25G	-		-	Com./Ind.
SFP+	CLSFP10GLP	Loopback	10G	-		-	Com./Ind.

Support&Service

Customization

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Customization

C-LIGHT R&D and sales provide various personalized product customization services for customers in different industries.

C-LIGHT ensures good product quality and quality assurance through a series of effective measures.

C-LIGHT provides professional pre-sales and after-sales services, including product certification qualifications, product reports, and free technical support.

C-LIGHT provides an excellent production environment to ensure that products can meet customer needs.

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Quality inspection

●100% of products pass initial test, final test and factory inspection.

●3-step quality control management process.

●100% complete implementation of customer order quality requirements.

●100% guarantee of customer product data information security.

Quality certification

Please contact us to download the certification certificate.

Quality certification

Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.

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Phone：+86 158 1857 3751
Email : sales@c-light.com

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