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

Name: Cisco DWDM-SFP10G-46.12-I Compatible LINK-PP C39 10G SFP+ DWDM 1546.12nm 40km Duplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 222520
Price: 257.14 USD
Availability: InStock
Rating: 4.9 (25 reviews)

# 222520

Product: Cisco DWDM-SFP10G-46.12-I Compatible LINK-PP C39 10G SFP+ DWDM 1546.12nm 40km Duplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)
SKU: 222520
P/N: LS-DW3910-40I
Price: $ 299
Stock: 312 in Stock
Sold: 1K
Product URL: https://www.l-p.com/products/489090.htm

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

DWDM-SFP10G-46.12-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.

Cisco Part Number	DWDM-SFP10G-46.12-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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F***l

Denmark

Verified Purchase

5 .0

2026-05-02

Excellent EML DWDM laser stability with zero CRC errors over a 38km fiber span.

53 Helpful vote Comments

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

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

T***y

India

Verified Purchase

4 .0

2026-01-05

Optics work great on our routers. The Duplex LC/UPC interface fits cleanly. I dropped one star because the tracking number didn't update for the first 3 days after shipping. Customer service responded quickly and provided the correct status though. Overall, good value for enterprise fiber projects.

26 Helpful vote Comments

B***h

Sweden

Verified Purchase

5 .0

2025-12-03

Excellent customer support from LINK-PP. They verified our compatibility matrix before shipping the LS-DW3910-40I. Deployed into our network infrastructure and had zero issues. Stable +1dBm output power level.

37 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

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

E***g

Belarus

Verified Purchase

5 .0

2025-06-09

They were very professional.I will definitely buy from them again.

76 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

M***t

United States

Verified Purchase

5 .0

2025-05-16

First purchase a very pleasant experience

21 Helpful vote Comments

E***d

Finland

Verified Purchase

5 .0

2025-04-27

Outstanding industrial operating temperature range — ideal for our unconditioned remote cabinets!

38 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

U***e

Austria

Verified Purchase

4 .0

2025-02-05

Good EML laser stability and excellent distance coverage up to 40km on SMF. The delivery was a day later than estimated due to bad weather at the hub. If you need reliable, budget-friendly DWDM transceivers for campus fiber networking, these are great, just plan for logistics variance.

34 Helpful vote Comments

W***g

United States

Verified Purchase

5 .0

2025-01-03

Goods as advertised. Shipping great. Recommended!

52 Helpful vote Comments

A***r

Macao

Verified Purchase

5 .0

2024-10-24

Products delivered as expected. Arrived a day early. Completely satisfied.

53 Helpful vote Comments

R***s

Hong Kong

Verified Purchase

5 .0

2024-03-21

I am proud to e a customer of Fiberstore.

78 Helpful vote Comments

P***f

Russian Federation

Verified Purchase

5 .0

2024-03-13

This company supplied the item at a good price, good quality and very quickly.

97 Helpful vote Comments

B***n

Norway

Verified Purchase

5 .0

2024-01-20

I appreciated the large array of productions offered

92 Helpful vote Comments

O***z

Romania

Verified Purchase

4 .0

2024-01-14

After seeing so many good reviews I gave it a try and I was extremely satisfied with the service here. Fast and simple! I'd recommend l-p.com to my friends!

85 Helpful vote Comments

A***r

United Kingdom

Verified Purchase

5 .0

2023-09-04

Excellent service delivery on time and very Fast and accurate.

40 Helpful vote Comments

J***m

United States

Verified Purchase

5 .0