Is this module compatible with traditional CWDM passive filter multiplexers?

No, this is a narrow-band 100GHz DWDM Channel 35 module. It requires a dedicated DWDM multiplexer grid to ensure proper channel isolation.

Can I use this module for a standard 10G link, or do I need specific DWDM equipment?

You need a DWDM Mux/Demux that supports the C35 channel (1549.32nm). Because it emits a highly specific wavelength, it cannot be paired with standard 1310nm or 850nm optics on the other end.

Is the physical dimension compliant with high-density switches where ports are stacked closely?

Yes, it is built exactly to standard SFF-8432 mechanical guidelines. It slides in and unlatches smoothly even in maximum-density line cards.

What is the exact channel and frequency for the C35 designation?

The C35 designation corresponds to ITU Grid Channel 35. It operates at a precise wavelength of 1549.32 nm with a frequency of 193.5 THz.

If my dark fiber span is exactly 38km, will this module still hold a stable 10G link?

It is possible if your fiber line has very low attenuation and clean splices. We highly recommend checking your total dB loss budget with an OTDR first.

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Extreme DWDM-SFP10G-49.32-I Compatible LINK-PP C35 10G SFP+ DWDM 1549.32nm 40km Duplex LC/UPC DDM SMF Optical Transceiver Module (Industrial)

Name: Extreme DWDM-SFP10G-49.32-I Compatible LINK-PP C35 10G SFP+ DWDM 1549.32nm 40km Duplex LC/UPC DDM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 222548
Price: 257.14 USD
Availability: InStock
Rating: 5 (36 reviews)

# 222548

Product: Extreme DWDM-SFP10G-49.32-I Compatible LINK-PP C35 10G SFP+ DWDM 1549.32nm 40km Duplex LC/UPC DDM SMF Optical Transceiver Module (Industrial)
SKU: 222548
P/N: LS-DW3510-40I
Price: $ 299
Stock: 479 in Stock
Sold: 881
Product URL: https://www.l-p.com/products/488804.htm

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Manufacture: LINK-PP

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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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Extreme DWDM-SFP10G-49.32-I Compatible LINK-PP C35 10G SFP+ Specifications

DWDM-SFP10G-49.32-I, operating as a hot-pluggable 10G SFP+ DWDM optical transceiver module, bridges single-mode fiber (SMF) links up to 40km at a 1549.32nm wavelength while embedding a comprehensive suite for real-time Digital Diagnostic Monitoring.

Extreme Part Number	DWDM-SFP10G-49.32-I	Vendor Name	LINK-PP
Form Factor	SFP+	Max Data Rate	10.7Gbps
Wavelength	1549.32nm	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	DDM Support	Yes
Operating Temperature Range	-40 to 85°C	Protocols	SFP+ MSA Compliant, CPRI, eCPRI

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Q: Is this module compatible with traditional CWDM passive filter multiplexers? By D***d on 2026-04-10

A: No, this is a narrow-band 100GHz DWDM Channel 35 module. It requires a dedicated DWDM multiplexer grid to ensure proper channel isolation. By admin on 2026-04-11
Q: Can I use this module for a standard 10G link, or do I need specific DWDM equipment? By G***s on 2026-01-14

A: You need a DWDM Mux/Demux that supports the C35 channel (1549.32nm). Because it emits a highly specific wavelength, it cannot be paired with standard 1310nm or 850nm optics on the other end. By admin on 2026-01-15
Q: Is the physical dimension compliant with high-density switches where ports are stacked closely? By F***h on 2025-11-28

A: Yes, it is built exactly to standard SFF-8432 mechanical guidelines. It slides in and unlatches smoothly even in maximum-density line cards. By admin on 2025-11-29
Q: What is the exact channel and frequency for the C35 designation? By E***n on 2025-05-02

A: The C35 designation corresponds to ITU Grid Channel 35. It operates at a precise wavelength of 1549.32 nm with a frequency of 193.5 THz. By admin on 2025-05-03
Q: If my dark fiber span is exactly 38km, will this module still hold a stable 10G link? By H***m on 2025-04-26

A: It is possible if your fiber line has very low attenuation and clean splices. We highly recommend checking your total dB loss budget with an OTDR first. By admin on 2025-04-27

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N***n

United States

Verified Purchase

5 .0

2026-04-22

Swapped out some old 10G generic optics for these dedicated DWDM Ch35 transceivers to maximize our single-mode fiber infrastructure. The duplex LC connector has a nice tactile click. Power consumption is impressively low, keeping our line card power draw well within specs.

120 Helpful vote Comments

G***s

United States

Verified Purchase

5 .0

2026-03-03

Ordered a batch of these LS-DW3510-40I DWDM modules for a regional ISP cell tower backhaul project. The single-mode fiber run is roughly 33km. Hooked them up to our routers and they registered immediately without forcing any speed settings. DOM telemetry matches our bench test meters perfectly. Very satisfied!

108 Helpful vote Comments

S***y

United States

Verified Purchase

5 .0

2026-02-22

As an optical transport engineer for a regional ISP, I highly recommend this 10G SFP+ DWDM 40km transceiver for high-density expansions. The 1549.32nm wavelength aligns perfectly with standard Channel 35 spacing, allowing clean mapping onto our existing passive multiplexers without causing adjacent crosstalk. The duplex LC port mechanism provides a definitive mechanical click upon insertion, ensuring a secure physical latch even inside cramped fiber trays.

99 Helpful vote Comments

D***h

United States

Verified Purchase

5 .0

2026-02-14

Best industrial 40km DWDM SFP transceiver for the price. Deployed 20 units, all green.

44 Helpful vote Comments

J***d

United States

Verified Purchase

5 .0

2026-01-18

Incredible value for a 40km DWDM SFP optical module. We did a full interoperability test between an Arista leaf switch and a legacy Juniper router using this SFP+ module. No encoding mismatches, no CRC errors, just stable 10G transport. Will buy in bulk next quarter.

107 Helpful vote Comments

L***l

United States

Verified Purchase

5 .0

2025-12-03

If you are looking for reliable industrial 10G SFP+ DWDM optical transceivers for harsh environments, this is it. Our node is located right next to heavy machinery with high ambient temps. These units stay cool around 52°C according to the internal DDM sensor. Outstanding thermal design!

54 Helpful vote Comments

R***e

United States

Verified Purchase

5 .0

2025-11-19

Perfect for High-Density Passive DWDM MUX Deployments! As an architecture consultant, I am highly cautious about third-party DWDM channel grid alignment, but these 1549.32nm (Channel 35) SFP+ transceivers are incredibly stable. We populated 24 ports on a passive 100GHz MUX connected to our switches, and the optical spectrum analyzer showed zero center wavelength drift. The built-in DOM functionality is fully compliant with SFF-8472, feeding real-time bias current and voltage metrics seamlessly into our automated SNMP tracking software. For long-haul 40km single-mode fiber links, these modules offer premium performance without the premium brand tax.

86 Helpful vote Comments

P***s

United States

Verified Purchase

5 .0

2025-09-02

Best choice for high-density DWDM expansions. The 1549.32nm wavelength is perfectly centered with zero spectral drift. Our optical spectrum analyzers verified the tight tolerances. Will definitely buy more LINK-PP transceivers for our next project rollout.

33 Helpful vote Comments

U***y

United States

Verified Purchase

4 .0

2025-08-31

High-quality 40km DWDM module. The wavelength is perfectly centered and the 10Gbps line rate runs completely error-free. The price is unbeatable for an industrial-grade wide temperature module. The shipping tracking link was delayed by 48 hours, though the package arrived right on time anyway. Will buy again.

35 Helpful vote Comments

T***v

United States

Verified Purchase

5 .0

2025-07-18

Great site, easy to use.

106 Helpful vote Comments

E***d

United States

Verified Purchase

5 .0

2025-07-01

Industrial grade pays off. Surviving the Texas summer heat inside an uncooled pole cabinet.

137 Helpful vote Comments

R***g

India

Verified Purchase

5 .0

2025-06-29

I am proud to e a customer of Fiberstore.

59 Helpful vote Comments

T***y

Republic of Korea

Verified Purchase

5 .0

2025-06-07

the ordering is painless customer service is excellent

88 Helpful vote Comments

H***s

United States

Verified Purchase

5 .0

2025-04-27

Upgraded our corporate backbone with these 1549.32nm DWDM SFP+ 40km modules. The duplex LC/UPC interface fits our existing patch panels like a glove. Running full line-rate 10Gbps traffic for 3 weeks now with absolute zero bit errors. Excellent alternative to overpriced OEM optics.

81 Helpful vote Comments

P***d

Sweden

Verified Purchase

5 .0

2025-04-25

Fast Shipping, Product as described.

135 Helpful vote Comments

R***p

Denmark

Verified Purchase

5 .0

2025-03-27

Wanted some stuff at reasonable price. Order immediately processed. Very pleased with price.

16 Helpful vote Comments

D***s

Belarus

Verified Purchase

5 .0

2025-03-12

Product was shipped promptly and the product was just as it was described.

43 Helpful vote Comments

M***y

United States

Verified Purchase

5 .0

2025-03-07

Our team deployed these 1549.32nm SFP+ modules across a metro ring topology. Having precise DOM functionality helps our NOC team monitor signal degradation proactively. LINK-PP has proved that you don't need to pay premium brand tax for carrier-grade reliability.

87 Helpful vote Comments

W***y

United States

Verified Purchase

5 .0

2024-12-12

I received a timely reply about the product I needed and ordering it was easy.

40 Helpful vote Comments

W***l

Bulgaria

Verified Purchase

5 .0

2024-06-06

Arrived on time and as promised.

86 Helpful vote Comments

K***v

United States

Verified Purchase

5 .0

2024-04-08

I have been using Link-pp for years, they are awesome.

36 Helpful vote Comments

W***g

United States

Verified Purchase

5 .0

2023-12-13

Great customer service!

92 Helpful vote Comments

H***s

Taiwan, Province of China

Verified Purchase

5 .0

2023-11-19

Fast transaction, Fast shipping and good price!

77 Helpful vote Comments

O***g

Netherlands

Verified Purchase

5 .0

2023-11-10

Awesome experience... Great customer service. It's was perfect experience.

83 Helpful vote Comments

M***z

France

Verified Purchase

5 .0

2023-11-08

Ordering was quick with email notifications of shipping and tracking numbers. Price was very competitive on the 10G Sfp Cage I ordered. Everything was good. Will definitely use this company again.

100 Helpful vote Comments

T***i

Ireland

Verified Purchase

5 .0

2023-09-23

Received informative status emails for order confirmation and shipping notification. Items were shipped/received promptly and were as described. Overall, an easy shopping experience and I will certainly shop here again.

66 Helpful vote Comments

O***i

Maldives

Verified Purchase

5 .0

2023-08-02

Large selection of hard to find items. Great pricing.

82 Helpful vote Comments

B***u

United States

Verified Purchase

5 .0