Does this support standard 10G Ethernet applications, or do we need special CWDM equipment?

The module is designed for 10G CWDM applications and the datasheet lists 10GBASE-ZR and 10GBASE-ZW applications. It supports up to 10.7Gbps and complies with relevant SFP+ standards including SFF-8431 and SFF-8472. For a CWDM deployment, the 1490nm optic must be paired with the appropriate optical channel and CWDM mux infrastructure.

We're using a mix of Cisco, HPE and Juniper equipment. How do we make sure the optic will be recognized correctly?

The product is offered with compatibility for multiple OEM platforms, including Cisco, HPE, Juniper, Dell, Brocade, Ciena, H3C and others. For a production order, provide the exact switch or router model so the appropriate compatible coding can be confirmed.

Is 0 to 70°C the operating temperature range? We plan to install these inside a standard data center rack.

Correct. The LS-CW4910-40C is specified for a 0 to +70°C operating case temperature range, making it suitable for standard indoor data centers, telecom rooms, server rooms and controlled network cabinets. It is the commercial-temperature version rather than the industrial-temperature model.

We already have a CWDM system with a 1490nm channel. Can this module be used directly with that wavelength plan?

Yes. The LS-CW4910-40C is specifically the 1490nm CWDM version and is designed for 10G transmission over single-mode fiber. It supports up to 40km and uses a Duplex LC interface. The far-end optic and CWDM mux/demux should use the corresponding wavelength channel for the optical path.

Can our monitoring system read TX and RX optical power from this SFP+?

Yes. The module supports DOM/DDM through the SFF-8472 diagnostic interface. Supported host equipment can read parameters such as module temperature, supply voltage, laser bias current, TX optical power and RX optical power for remote link monitoring and troubleshooting.

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Generic CW-SFP10G40-49 Compatible LINK-PP 10G SFP+ CWDM 1490nm 40km DOM Duplex LC SMF Optical Transceiver Module

Name: Generic CW-SFP10G40-49 Compatible LINK-PP 10G SFP+ CWDM 1490nm 40km DOM Duplex LC SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 223846
Price: 220.16 USD
Availability: InStock
Rating: 5 (29 reviews)

# 223846

Product: Generic CW-SFP10G40-49 Compatible LINK-PP 10G SFP+ CWDM 1490nm 40km DOM Duplex LC SMF Optical Transceiver Module
SKU: 223846
P/N: LS-CW4910-40C
Price: $ 256
Stock: 310 in Stock
Sold: 840
Product URL: https://www.l-p.com/products/495373.htm

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Compatible:: Cisco; LINK-PP; Alcatel-Lucent; Brocade; Ciena; Dell; FS; Generic; H3C; HPE; Juniper

Wavelength:: 1270nm; 1290nm; 1310nm; 1330nm; 1350nm; 1370nm; 1390nm; 1410nm; 1430nm; 1450nm; 1470nm; 1490nm; 1510nm; 1530nm; 1550nm; 1570nm; 1590nm; 1610nm

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Generic CW-SFP10G40-49 Compatible LINK-PP 10G SFP+ Specifications

The Generic CW-SFP10G40-49 Compatible LINK-PP 10G SFP+ transceiver delivers dependable 10Gbps performance at the 1490nm CWDM wavelength and supports long-reach links up to 40km over single-mode fiber. Compact and hot-pluggable, it enables rapid rollout of high-speed optical connections for LINK-PP-compatible systems.

Generic Part Number	CW-SFP10G40-49	Vendor Name	LINK-PP
Form Factor	SFP+	Max Data Rate	10Gbps
Wavelength	1490nm	Max Cable Distance	40km
Connector	Duplex LC	Media	SMF
Transmitter Type	EML	Receiver Type	PIN
TX Power	-1 to +5dBm	RX Power	-23 to -6dBm
Receiver Sensitivity	<-16dBm	Receiver Overload	0dBm
Operating Temperature Range	0 to 70°C	Protocols	SFP+ MSA Compliant, SFF 8472,SFF 8431,802.3ae, ITU-T

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Q: Does this support standard 10G Ethernet applications, or do we need special CWDM equipment? By P***r on 2026-05-15

A: The module is designed for 10G CWDM applications and the datasheet lists 10GBASE-ZR and 10GBASE-ZW applications. It supports up to 10.7Gbps and complies with relevant SFP+ standards including SFF-8431 and SFF-8472. For a CWDM deployment, the 1490nm optic must be paired with the appropriate optical channel and CWDM mux infrastructure. By admin on 2026-05-16
Q: We're using a mix of Cisco, HPE and Juniper equipment. How do we make sure the optic will be recognized correctly? By R***e on 2025-07-12

A: The product is offered with compatibility for multiple OEM platforms, including Cisco, HPE, Juniper, Dell, Brocade, Ciena, H3C and others. For a production order, provide the exact switch or router model so the appropriate compatible coding can be confirmed. By admin on 2025-07-12
Q: Is 0 to 70°C the operating temperature range? We plan to install these inside a standard data center rack. By T***s on 2024-09-20

A: Correct. The LS-CW4910-40C is specified for a 0 to +70°C operating case temperature range, making it suitable for standard indoor data centers, telecom rooms, server rooms and controlled network cabinets. It is the commercial-temperature version rather than the industrial-temperature model. By admin on 2024-09-21
Q: We already have a CWDM system with a 1490nm channel. Can this module be used directly with that wavelength plan? By H***n on 2024-09-08

A: Yes. The LS-CW4910-40C is specifically the 1490nm CWDM version and is designed for 10G transmission over single-mode fiber. It supports up to 40km and uses a Duplex LC interface. The far-end optic and CWDM mux/demux should use the corresponding wavelength channel for the optical path. By admin on 2024-09-08
Q: Can our monitoring system read TX and RX optical power from this SFP+? By D***s on 2024-05-27

A: Yes. The module supports DOM/DDM through the SFF-8472 diagnostic interface. Supported host equipment can read parameters such as module temperature, supply voltage, laser bias current, TX optical power and RX optical power for remote link monitoring and troubleshooting. By admin on 2024-05-28

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G***n

Lithuania

Verified Purchase

5 .0

2026-07-19

We installed these in a regional telecom room connecting a core switch to a remote aggregation site. The 1490nm CWDM channel was already reserved in our optical plan, so this module avoided any changes to the mux configuration. The 10Gbps link has remained stable during continuous operation.

22 Helpful vote Comments

G***s

Canada

Verified Purchase

5 .0

2026-04-18

Easy install. =)

5 Helpful vote Comments

H***l

Russian Federation

Verified Purchase

5 .0

2026-03-18

Works nicely for long fiber runs.

81 Helpful vote Comments

A***k

Belgium

Verified Purchase

5 .0

2025-09-03

We used the LS-CW4910-40C for a remote office uplink where the fiber route is around 32km. The 40km specification gave us a comfortable margin, while the 0 to 70°C temperature range is suitable for the controlled telecom room. The module was recognized immediately by our switch.

47 Helpful vote Comments

M***s

Finland

Verified Purchase

5 .0

2025-08-19

Plugged in and worked. ;)

1 Helpful vote Comments

A***s

New Zealand

Verified Purchase

5 .0

2025-07-12

Good 10G CWDM option.

76 Helpful vote Comments

G***s

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-05-12

Stable under load. :D

47 Helpful vote Comments

P***s

Indonesia

Verified Purchase

5 .0

2025-02-10

Our NOC team likes the DOM capability because we can check the health of the optic without sending someone to the cabinet. We regularly monitor temperature, TX power and RX power on long-distance links. These modules have been straightforward to integrate into that workflow.

20 Helpful vote Comments

S***k

Lithuania

Verified Purchase

5 .0

2025-02-05

We use a mixture of OEM and compatible optics across our network. These were tested against the required host platforms before deployment, and the compatibility was good. For a 40km 10G CWDM connection, the pricing is much easier for us to justify when ordering multiple units.

38 Helpful vote Comments

M***e

Singapore

Verified Purchase

5 .0

2024-12-06

Items arrived on time.Very good.

71 Helpful vote Comments

R***n

Belgium

Verified Purchase

5 .0

2024-12-01

Our team needed a 1490nm SFP+ module for an existing CWDM system, not a standard 1310nm optic. This one fit the requirement exactly. We reused the existing Duplex LC single-mode fiber and had a stable 10Gbps connection after configuration.

31 Helpful vote Comments

I***n

New Zealand

Verified Purchase

5 .0

2024-11-16

We tested the module with existing single-mode fiber and CWDM passive equipment. The Duplex LC connection was a direct match for our patching, and the 1490nm channel behaved as expected. It saved us from having to source a different optic family for this particular wavelength.

83 Helpful vote Comments

S***s

United Kingdom

Verified Purchase

5 .0

2024-09-29

Great company to do business with. Best prices around, Fast and quality shipping.

38 Helpful vote Comments

A***r

Netherlands

Verified Purchase

5 .0

2024-09-28

We bought a small batch for a multi-vendor lab test. The modules were tested in Cisco, HPE and Juniper environments, and the SFP+ interfaces came up normally. We also checked TX/RX optical readings through DOM before moving them into production.

87 Helpful vote Comments

E***s

Morocco

Verified Purchase

5 .0

2024-09-26

We installed several pairs between distribution switches and remote aggregation cabinets. The links carried sustained 10GbE traffic during our acceptance testing with no unexpected drops. The digital diagnostics were also useful for checking optical levels remotely during commissioning.

21 Helpful vote Comments

A***n

Argentina

Verified Purchase

5 .0

2024-08-27

Good fit for our CWDM upgrade.

54 Helpful vote Comments

L***n

Indonesia

Verified Purchase

5 .0

2024-07-06

The item I was looking for was easy to find.

17 Helpful vote Comments

C***s

Thailand

Verified Purchase

5 .0

2024-04-04

I checked out l-p.com references on several forums and it had nothing but good reviews.

49 Helpful vote Comments

D***k

Israel

Verified Purchase

5 .0

2024-04-04

The 1490nm wavelength was the main reason we selected this model. Our CWDM design already had other channels occupied, so getting the correct wavelength was critical. After installation, the link came up cleanly and the module reported useful DOM information to the network monitoring system.

32 Helpful vote Comments

C***n

Italy

Verified Purchase

5 .0

2024-03-30

The package arrived with a slightly scuffed outer box, but the optics inside were properly protected. We tested the module on a 10G single-mode link before installation and everything checked out. No issue with the actual product or optical performance.

15 Helpful vote Comments

W***u

United States

Verified Purchase

5 .0

2024-03-16

The entire team was super helpful ,It was delivered very Fast and work perfectly with my switch. I would definitely buy from l-p.com again.

16 Helpful vote Comments

H***l

Mexico

Verified Purchase

5 .0

2024-03-16

We used these for 10G backhaul connections from several remote network sites. The 40km transmission rating is useful because some of our routes have changing fiber paths and we wanted additional distance margin. The modules have performed reliably so far, with stable optical readings during normal traffic.

91 Helpful vote Comments

B***s

Spain

Verified Purchase

5 .0

2024-02-23

Excellent products, very reasonable costs, Fast shipping and excellent follow up by customer service.

66 Helpful vote Comments

S***n

Sweden

Verified Purchase

5 .0