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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Cisco 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: Cisco 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: 222546
Price: 257.14 USD
Availability: InStock
Rating: 5 (31 reviews)

# 222546

Product: Cisco 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: 222546
P/N: LS-DW3510-40I
Price: $ 299
Stock: 446 in Stock
Sold: 665
Product URL: https://www.l-p.com/products/488798.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-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.

Cisco 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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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

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

I***l

United States

Verified Purchase

5 .0

2025-10-22

We needed specific channel 35 DWDM optics for an existing passive MUX setup. LINK-PP nailed it with this industrial-grade transceiver. The real-time Digital Diagnostics Monitoring (DDM) is fully operational, tracking optical Rx/Tx power levels accurately. Definitely adding them to our standard procurement vendor list.

114 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

O***y

United States

Verified Purchase

5 .0

2025-07-29

Running these inside a remote node cabinet on a mountain top. The industrial grade wide-temperature range was a mandatory requirement for our engineering team. They have survived extreme weather spikes already while maintaining a steady 10Gbps link. Simply amazing.

153 Helpful vote Comments

h***i

South Africa

Verified Purchase

5 .0

2025-07-13

This is my go-to site for ordering high quality optics, especially customized ones. They always have the best prices and a great selection.

71 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

B***g

Turkey

Verified Purchase

5 .0

2025-04-07

Great website. Easy and organized.

68 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

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

J***n

Israel

Verified Purchase

5 .0

2024-12-03

I have been very pleased with quality of each item.

26 Helpful vote Comments

Y***z

Israel

Verified Purchase

5 .0

2024-07-11

Got my order on promised date. Great customer service.

42 Helpful vote Comments

W***l

Bulgaria

Verified Purchase

5 .0

2024-06-06

Arrived on time and as promised.

86 Helpful vote Comments

W***g

United States

Verified Purchase

5 .0

2023-12-13

Great customer service!

92 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

A***s

South Africa

Verified Purchase

5 .0

2023-08-21

This is my third purchase and so far so good.

112 Helpful vote Comments

P***I

United States

Verified Purchase

5 .0

2023-08-16

Higher shipping charge fee. No other complaints.

38 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

2023-06-04

Just as we wanted, the item was delivered in a timely manner. Thanks

85 Helpful vote Comments

A***a

United Kingdom

Verified Purchase

5 .0

2023-05-04

no problems to report

165 Helpful vote Comments

J***t

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2023-04-19

Delivery is very Fast and their service is also very good. Waiting for their working performance in the near future.

49 Helpful vote Comments

F***e

New Zealand

Verified Purchase

5 .0

2023-04-09

I am a little guy but treated as a big fish. prompt notification quick delivery and save lot cash!!!

71 Helpful vote Comments

D***r

United States

Verified Purchase

5 .0

2023-03-10

this a good goos

81 Helpful vote Comments

S***i

Cambodia

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5 .0

2023-03-05

have been very satisfied with the quality of goods purchased

79 Helpful vote Comments

S***i

Republic of Korea

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5 .0

2023-02-23

It's too early to know, so I can only give you an average rating.

70 Helpful vote Comments

D***i

Bangladesh

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5 .0

2023-01-26

Great customer service! Walked through with me to solve a problem I had with the order. Previous orders have always shipped Fast and arrived within a short time.

61 Helpful vote Comments