100% Traffic Tested 100G QSFP28 LR4 OTU4 10km Transceiver — FOT Fiber Optic

Click to configure the module — your selection is carried into the quote email.

100G QSFP28 LR4 OTU4 10km Transceiver

Name: 100G QSFP28 LR4 OTU4 10km Transceiver
Brand: FOT Fiber Optic
SKU: FOT-TR-100G-Q28-LR4-OTU4
Availability: InStock

SKU: FOT-TR-100G-Q28-LR4-OTU4 · 100G · QSFP28

100 Gb/s LR4 OTU4 in QSFP28 — LWDM4 grid, 10 km over OS2 single-mode. Vendor-coded and traffic-tested on a live switch before shipment.

100 Gb/s4 × 27.95G NRZ
10 kmMax reach
LWDM4 gridWavelength
≤ 4.5 WMax power

Coding

Generic / MSANVIDIA / MellanoxCiscoAristaJuniperHuawei

Request a Quote Request Datasheet

Ships worldwide

Free qualification samples

3-year warranty

Product Overview

Dual-rate Ethernet/OTN module for transport gear that needs OTU4 framing as well as 100GbE.

Built to 100GBASE-LR4 + OTU4 (11.2 Gbaud) dual rate, this module presents a Duplex LC optical interface and runs over OS2 single-mode. Every unit is programmed to your platform's vendor coding, powered up on a live switch and traffic-tested end-to-end before it is packed — so it links up on first insertion rather than throwing an “unsupported transceiver” message at 2 a.m.

Full DDM/DOM telemetry is implemented, so per-lane transmit and receive power, laser bias and case temperature are readable live from your NOS. Modules are serialized, individually bagged with dust caps, and covered by a 3-year warranty. OEM/ODM labelling and custom EEPROM profiles are available on request.

Compatible Part Number Cross-Reference

Tell us the switch model and we will confirm the exact OEM part this replaces, then code and traffic-test the module against that platform before shipping.

Technical Specifications

Optical & Electrical
Data Rate	100 Gb/s (4 × 27.95G NRZ)
Form Factor	QSFP28
Module Type	LR4 OTU4
Wavelength	LWDM4 grid
Maximum Reach	10 km
Fiber Type	OS2 single-mode
Optical Connector	Duplex LC
Power Consumption	≤ 4.5 W

Compliance & Management
Standard	100GBASE-LR4 + OTU4 (11.2 Gbaud) dual rate
Management	CMIS / SFF-8636 as applicable to the form factor
DDM / DOM	Full real-time digital diagnostic monitoring
Hot Pluggable	Yes
RoHS	Compliant
Operating Temperature	0 °C to +70 °C (commercial); industrial grade on request
Warranty	3 years

Testing & Supply
Traffic Test	100% — every module linked on a live switch before shipment
BER Verification	Verified end-to-end per unit
Vendor Coding	Programmed to your platform at manufacture; mixed coding available
Traceability	Serialized; serial links to test record and production batch
Test Report	Available per order; sample reports supplied for tenders
Lead Time	Stock items ship in 2–3 days; coded builds 5–7 days
Sample Policy	Free samples available for qualification before volume orders

Ordering Information

Part Number	Configuration	Reach	Availability
FOT-TR-100G-Q28-LR4-OTU4	LR4 OTU4	10 km	In stock
FOT-TR-100G-Q28-LR4-OTU4-NVID	LR4 OTU4 · coded for NVIDIA / Mellanox	10 km	Build to order
FOT-TR-100G-Q28-LR4-OTU4-CISC	LR4 OTU4 · coded for Cisco	10 km	Build to order
FOT-TR-100G-Q28-LR4-OTU4-ARIS	LR4 OTU4 · coded for Arista	10 km	Build to order
FOT-TR-100G-Q28-LR4-OTU4-JUNI	LR4 OTU4 · coded for Juniper	10 km	Build to order

Need a wavelength, channel or coding that is not listed? Custom builds ship in 5–7 days — note it on your RFQ.

Platform Compatibility

Every module is EEPROM-programmed at the factory to the vendor coding you specify, so the host recognises it natively — no “unsupported transceiver” warnings and no console workarounds. Mixed coding (a different vendor at each end) is available for inter-vendor links.

Generic / MSANVIDIA / MellanoxCiscoAristaJuniperHuaweiHPEDellExtreme

Quality & What's in the Box

100% Traffic Tested

Every module is linked on a live switch and BER-verified end-to-end before packing.

Serialized & Traceable

Serial number links to the test record, coding profile and production batch.

Free Samples

Qualify the module on your own platform before committing to a volume order.

Packaging

Individually bagged with dust caps and ESD protection, packed in export cartons.

Typical Applications

Data Center Spine & Leaf

High-radix switching fabrics where port density and power per bit decide the design.

AI / GPU Clusters

Rail-optimised accelerator fabrics running InfiniBand or RoCE at scale.

Metro & DCI

Campus backbone and data-centre interconnect over leased or owned dark fibre.

Enterprise & Storage

Core uplinks, SAN fabrics and aggregation for campus and enterprise networks.

Frequently Asked Questions

What reach will I actually get on OS2 single-mode?

This module is specified to 10 km. Real-world reach depends on your channel loss budget — every mated connector pair costs roughly 0.3 dB and every splice about 0.1 dB. Measure the installed channel rather than assuming the map distance, and keep 2–3 dB of margin for ageing and future repairs.

Can you code these for my switch vendor?

Yes. We program the EEPROM at manufacture for NVIDIA/Mellanox, Cisco, Arista, Juniper, Huawei, HPE, Dell, Extreme and generic MSA. Specify the platform on your RFQ; mixed coding (a different vendor at each end) is routine for inter-vendor links.

Do you supply test reports and samples?

Free samples are available so you can qualify the module in your own environment before committing to volume. Per-order test reports are supplied on request, and sample reports can be provided for tender documentation.

Related 100G Products

Request a quote for this part

Tell us the platform and the quantity. An engineer checks the part against your switch and software version before quoting — if it will not work, we say so.

Goes to our engineers and the quotation desk together. Replies come from sales@topnetsystem.com, usually within one working day.