Does the LS-DW3910-40I utilize a cooled EML laser or a standard DFB laser to hold its 1546.12nm line?

It integrates a highly precise, cooled Electro-absorption Modulated Laser (EML) to completely prevent wavelength drift across the dense 100GHz C-Band channel spectrum.

Does the DOM circuitry monitor internal power supply voltage variations caused by unstable solar/battery power grids at remote cell sites?

Yes, the real-time digital optical diagnostics report precise internal module voltage fluctuations, protecting the laser from power anomalies.

Does the transceiver design comply with RoHS and CE hazardous substance guidelines for deployment across dense EU public sectors?

Yes, the product is fully certified with RoHS, CE, and FCC stamps, fulfilling all necessary regulatory frameworks for global infrastructure rollout.

Can this specific module run on an active 100GHz ITU-T grid system alongside adjacent DWDM channels?

Yes, it is fixed to Channel 39 (1546.12nm) on the standard 100GHz grid, ensuring clean channel separation without bleeding into neighboring bands.

Can this module run reliably over legacy G.652.D dark fiber that has multiple physical fusion splices along the path?

Yes, it is fully optimized for standard single-mode fiber (SMF) grids, but you must ensure the cumulative insertion loss from the fusion splices doesn't exceed the module's maximum optical link budget safety margins. We highly recommend conducting an OTDR trace to verify that the total attenuation falls well within the transceiver’s rated receiver sensitivity limits.

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H3C DWDM-SFP10G-46.12-40-I Compatible LINK-PP C39 10G SFP+ DWDM 1546.12nm 40km Duplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)

Name: H3C DWDM-SFP10G-46.12-40-I Compatible LINK-PP C39 10G SFP+ DWDM 1546.12nm 40km Duplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 222525
Price: 257.14 USD
Availability: InStock
Rating: 5 (22 reviews)

# 222525

Product: H3C DWDM-SFP10G-46.12-40-I Compatible LINK-PP C39 10G SFP+ DWDM 1546.12nm 40km Duplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)
SKU: 222525
P/N: LS-DW3910-40I
Price: $ 299
Stock: 330 in Stock
Sold: 1.1K
Product URL: https://www.l-p.com/products/489164.htm

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Manufacture: LINK-PP

P/N: LS-DW3910-40I

Compatible:: Cisco; LINK-PP; Arista; Brocade; Ciena; Dell; Extreme; FS; Generic; H3C; HW; Juniper; MRV; Netgear

Wavelength:: C17; C18; C19; C20; C21; C22; C23; C24; C25; C26; C27; C28; C29; C30; C31; C32; C33; C34; C35; C36; C37; C38; C39; C40

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H3C DWDM-SFP10G-46.12-40-I Compatible LINK-PP C39 10G SFP+ Specifications

DWDM-SFP10G-46.12-40-I integrates a cooled EML transmitter and a PIN receiver into an industrial-grade 10G SFP+ DWDM optical module, guaranteeing precise 1546.12nm optical signaling and comprehensive DOM diagnostics over single-mode fiber runs up to 40km.

H3C Part Number	DWDM-SFP10G-46.12-40-I	Vendor Name	LINK-PP
Form Factor	SFP+	Max Data Rate	10.7Gbps
Wavelength	1546.12nm	Max Cable Distance	40km
Connector	Duplex LC	Media	SMF
Transmitter Type	EML	Receiver Type	PIN
TX Power	-1 to +2dBm	RX Power	-16 to -1dBm
Receiver Sensitivity	<-15.5dBm	DOM Support	Yes
Operating Temperature Range	-40 to 85°C	Protocols	SFP+ MSA Compliant, CPRI, eCPRI

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Q: Does the LS-DW3910-40I utilize a cooled EML laser or a standard DFB laser to hold its 1546.12nm line? By C***e on 2026-05-04

A: It integrates a highly precise, cooled Electro-absorption Modulated Laser (EML) to completely prevent wavelength drift across the dense 100GHz C-Band channel spectrum. By admin on 2026-05-05
Q: Does the DOM circuitry monitor internal power supply voltage variations caused by unstable solar/battery power grids at remote cell sites? By J***r on 2026-01-18

A: Yes, the real-time digital optical diagnostics report precise internal module voltage fluctuations, protecting the laser from power anomalies. By admin on 2026-01-19
Q: Does the transceiver design comply with RoHS and CE hazardous substance guidelines for deployment across dense EU public sectors? By H***t on 2025-10-21

A: Yes, the product is fully certified with RoHS, CE, and FCC stamps, fulfilling all necessary regulatory frameworks for global infrastructure rollout. By admin on 2025-10-22
Q: Can this specific module run on an active 100GHz ITU-T grid system alongside adjacent DWDM channels? By L***h on 2025-07-05

A: Yes, it is fixed to Channel 39 (1546.12nm) on the standard 100GHz grid, ensuring clean channel separation without bleeding into neighboring bands. By admin on 2025-07-06
Q: Can this module run reliably over legacy G.652.D dark fiber that has multiple physical fusion splices along the path? By M***n on 2025-04-10

A: Yes, it is fully optimized for standard single-mode fiber (SMF) grids, but you must ensure the cumulative insertion loss from the fusion splices doesn't exceed the module's maximum optical link budget safety margins. We highly recommend conducting an OTDR trace to verify that the total attenuation falls well within the transceiver’s rated receiver sensitivity limits. By admin on 2025-04-11

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W***y

Philippines

Verified Purchase

5 .0

2026-04-21

Highly impressed with the industrial operating temperature (-40 to 85°C). We use these in uncooled roadside cabinets for traffic management networks. They handle temperature spikes easily without affecting the 10Gbps line rate.

33 Helpful vote Comments

Z***m

Malaysia

Verified Purchase

5 .0

2026-02-25

These EML DWDM lasers are incredibly stable. We run a tight 100GHz grid spacing and channel crosstalk can be an issue with cheaper optics, but these hold their 1546.12nm frequency perfectly. Will buy more for our next PoP upgrade.

102 Helpful vote Comments

C***e

Norway

Verified Purchase

5 .0

2026-01-15

Real-time DOM telemetry is accurate and the 1546.12nm wavelength is perfectly stable.

49 Helpful vote Comments

Y***h

Hong Kong

Verified Purchase

5 .0

2025-10-30

Outstanding link budget on these 40km SFP+ modules. We are running them across a 32km span through multiple patch bays, and the receiver sensitivity holds strong at -13.1dBm. Great value for high-density deployments. ✨

66 Helpful vote Comments

V***n

United States

Verified Purchase

5 .0

2025-08-14

Solid build quality. The 1546.12nm fixed wavelength is perfect for matching our passive C-Band Mux infrastructure. We’ve had 30 of these modules running for 2 months with zero CRC errors or interface drops. Excellent 10G solution.

19 Helpful vote Comments

D***k

Switzerland

Verified Purchase

5 .0

2025-07-08

Rock-solid 40km link over single-mode fiber, running on our switches flawlessly.

26 Helpful vote Comments

R***n

Italy

Verified Purchase

5 .0

2025-06-23

Outstanding optical performance. We deployed these transceivers on a 35km dark fiber span to bridge two regional points of presence (PoPs). Since we utilize a passive DWDM Mux/Demux setup, wavelength stability is paramount. A minor frequency drift can cause adjacent channel crosstalk and ruin the entire fiber strand's throughput. These 10G DWDM 1546.12nm modules hold their center frequency flawlessly. Even under heavy aggregation traffic from our broadband access networks, the internal DDM shows zero fluctuation in wavelength accuracy. Our routers accepted the modules immediately as native compatible devices. The optical link budget on this 40km module is surprisingly forgiving—our RX power reads -12.1dBm, leaving a solid safety margin before the receiver overload limit or sensitivity floor. LINK-PP has definitely nailed the manufacturing process on these modules.

91 Helpful vote Comments

X***e

United Arab Emirates

Verified Purchase

5 .0

2025-05-28

Complete compatibility across our edge routing platforms. SFP+ MSA compliance means it just works. The Duplex LC/UPC optical ports provide a very firm, reassuring click when patching single-mode fiber. Delivery was fast too.

59 Helpful vote Comments

O***e

Romania

Verified Purchase

5 .0

2025-05-27

We received the items quickly and are pleased with the price. Also, thank you for the great communication.

120 Helpful vote Comments

A***d

Poland

Verified Purchase

5 .0

2025-03-09

Excellent single-mode SFP transceivers. We use them for interconnecting high-throughput SAN arrays over long-distance links. No frame losses or latency penalties. The physical latching mechanisms feel very heavy-duty.

41 Helpful vote Comments

W***g

United States

Verified Purchase

5 .0

2025-01-03

Goods as advertised. Shipping great. Recommended!

52 Helpful vote Comments

R***s

Hong Kong

Verified Purchase

5 .0