Can I use this optical module with OM3 multi-mode fiber that is already installed in our building?

No. This LS-CW5110-40C CWDM module is designed for single-mode fiber and supports up to 40km transmission. It should not be used with OM3 or other multi-mode fiber for this application.

Does this LS-CW5110-40C module support live insertion? We need to replace optics during scheduled maintenance without shutting down the switch.

Yes. It has a hot-pluggable SFP+ form factor, so it can normally be inserted or removed while the device is powered on. Follow your switch vendor’s maintenance procedure to avoid affecting the active link.

Our network room is air-conditioned, but the switch can run warm. Is the commercial version okay?

Yes, it is generally suitable for a controlled indoor network room if the module case temperature remains between 0°C and +70°C. Monitoring the module temperature through DOM is recommended.

We already have a CWDM MUX with LC ports. Can this SFP module connect directly to it?

Yes, if the MUX includes a 1510nm CWDM channel and uses compatible duplex LC single-mode connections. Make sure the module wavelength matches the MUX channel exactly.

We need to carry multiple 10G services over one pair of single-mode fibers between two sites. Is this the right type of module?

Yes, this module is suitable for a CWDM system to carry one 10G service over the 1510nm channel. If you need to carry multiple 10G services over one fiber pair, you will need one SFP module for each CWDM wavelength (e.g., 1470nm, 1490nm, 1510nm, etc.), combined with a matching CWDM MUX/DEMUX. Ensure the same wavelength is used at both ends of the link.

Breadcrumb: Home; Products; Optics Transceivers | SFP Modules; 10/25/40G/100G Transceiver Modules; 10G CWDM/DWDM SFP+; 223451

Click to open expanded view

Juniper EX-SFP-10GE-CWE51 Compatible LINK-PP 10G SFP+ CWDM 1510nm 40km Duplex LC DOM SMF Optical Transceiver Module

Name: Juniper EX-SFP-10GE-CWE51 Compatible LINK-PP 10G SFP+ CWDM 1510nm 40km Duplex LC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 223451
Price: 220.16 USD
Availability: InStock
Rating: 4.9 (34 reviews)

# 223451

Product: Juniper EX-SFP-10GE-CWE51 Compatible LINK-PP 10G SFP+ CWDM 1510nm 40km Duplex LC DOM SMF Optical Transceiver Module
SKU: 223451
P/N: LS-CW5110-40C
Price: $ 256
Stock: 673 in Stock
Sold: 1.1K
Product URL: https://www.l-p.com/products/483561.htm

For Order Over $1000 Get $15.00 Off , Code: Linkpp15

For Order Over $3000 Get $50.00 Off , Code: Linkpp50

For Order Over $5000 Get $100.00 Off , Code: Linkpp100

New Users: $10 Coupon for Orders , Code: linkpp2610

34 Reviews

5 Questions

Request Stock

1.1K Sold

$ 256

Free shipping over $600, If you need a more favorable price, please contact us directly.

Qty (pcs) :

Unit Price :

$ 256

100

$ 243.2

1000

$ 235.52

3000

$ 227.84

6000

$ 220.16

Manufacture: LINK-PP

P/N: LS-CW5110-40C

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

Shipping:

To Be Negotiated

Free Shipping

Can't deliver

to United States via {{now_chooseship?now_chooseship.name:''}}

Estimated delivery time : {{now_chooseship?now_chooseship.datemin:''}}-{{now_chooseship?now_chooseship.datemax:''}} days. See details

5-Year Warranty 30-Day Returns 30-Day Exchange

Stock:

{{parseInt(detail_data.left_num) ? detail_data.left_num +' in Stock' :detail_data.zeroStockOrder==0?'Out of Stock':'Available'}} .

Quantity:

( Min. Order {{detail_data.prodInfo.minimum_ordered_quantity}} )

undeliverable

Total Price:

{{ detail_data.displayed_price.unit_prefix }} {{ detail_data.displayed_price.original_total_price }} ( {{ detail_data.displayed_price.rate_of_discount }}% OFF ) {{detail_data.displayed_price.ex_sell_type}}

Add to wish

Specifications

Specification
Videos
Matching Products
Download
Q&A
Customer Reviews

Juniper EX-SFP-10GE-CWE51 Compatible LINK-PP 10G SFP+ Specifications

EX-SFP-10GE-CWE51 operates as a 10G SFP+ CWDM optical transceiver at 1510nm, integrating a cooled EML laser and PIN photodiode to enable duplex LC connectivity and support transmission distances of up to 40km over single-mode fiber, with real-time digital optical monitoring for continuous parameter visibility.

Juniper Part Number	EX-SFP-10GE-CWE51	Vendor Name	LINK-PP
Form Factor	SFP+	Max Data Rate	10.7Gbps
Wavelength	1510nm	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	DOM Support	Yes
Operating Temperature Range	0 to 70°C	Protocols	SFP+ MSA Compliant, SFF 8472,SFF 8431,802.3ae, ITU-T

Videos

Matching Products

Pictures

ID#

Description

Price

Stock

Add to Cart

Download

Product Drawing

PDF
LS-CWxx10-40C 1271-1611.pdf

Questions & Answers
Ask a Question

No data

Q: Can I use this optical module with OM3 multi-mode fiber that is already installed in our building? By K***s on 2026-04-20

A: No. This LS-CW5110-40C CWDM module is designed for single-mode fiber and supports up to 40km transmission. It should not be used with OM3 or other multi-mode fiber for this application. By admin on 2026-04-21
Q: Does this LS-CW5110-40C module support live insertion? We need to replace optics during scheduled maintenance without shutting down the switch. By P***n on 2026-02-16

A: Yes. It has a hot-pluggable SFP+ form factor, so it can normally be inserted or removed while the device is powered on. Follow your switch vendor’s maintenance procedure to avoid affecting the active link. By admin on 2026-02-17
Q: Our network room is air-conditioned, but the switch can run warm. Is the commercial version okay? By F***h on 2025-09-23

A: Yes, it is generally suitable for a controlled indoor network room if the module case temperature remains between 0°C and +70°C. Monitoring the module temperature through DOM is recommended. By admin on 2025-09-24
Q: We already have a CWDM MUX with LC ports. Can this SFP module connect directly to it? By H***d on 2025-07-14

A: Yes, if the MUX includes a 1510nm CWDM channel and uses compatible duplex LC single-mode connections. Make sure the module wavelength matches the MUX channel exactly. By admin on 2025-07-15
Q: We need to carry multiple 10G services over one pair of single-mode fibers between two sites. Is this the right type of module? By J***t on 2025-03-26

A: Yes, this module is suitable for a CWDM system to carry one 10G service over the 1510nm channel. If you need to carry multiple 10G services over one fiber pair, you will need one SFP module for each CWDM wavelength (e.g., 1470nm, 1490nm, 1510nm, etc.), combined with a matching CWDM MUX/DEMUX. Ensure the same wavelength is used at both ends of the link. By admin on 2025-03-27

Customer Reviews
Write a Review

{{stardata.star}}

{{comment.count}} reviews
5 Stars

{{comment.star5}}%

4 Stars

{{comment.star4}}%

3 Stars

{{comment.star3}}%

2 Stars

{{comment.star2}}%

1 Star

{{comment.star1}}%

All Reviews ({{comment.star_num?comment.star_num:comment.count}})

All Reviews

5 stars only

4 stars only

3 stars only

2 stars only

1 star only
Reviews with Pictures ( {{comment.pic_comment}} )
See All Reviews

No data

E***y

New Zealand

Verified Purchase

5 .0

2026-05-02

Zero bit errors over our passive mux setup, definitely ordering more.

46 Helpful vote Comments

J***r

Israel

Verified Purchase

5 .0

2026-04-29

Good choice for extending 10G storage traffic to a remote equipment room. The module reported DOM/DDM values correctly, so our team could track temperature, voltage, and optical levels without extra tools.

85 Helpful vote Comments

N***m

Morocco

Verified Purchase

5 .0

2026-03-14

We ordered these for a phased upgrade from separate dark-fiber links to a CWDM architecture. The goal was to carry multiple 10G services over one single-mode fiber pair while keeping a clear wavelength assignment, and the 1510nm channel filled an open slot in our plan. On test, the module’s transmit and receive levels were within expected range, the 40km specification provided enough design headroom, and no packet loss was observed in extended throughput testing. For bulk rollout, having repeatable labeling, SFP+ MSA compliance, and DOM support made inventory and troubleshooting much easier.

147 Helpful vote Comments

G***g

Poland

Verified Purchase

5 .0

2026-03-04

Excellent 10G CWDM SFP+ module, no drama during deployment.

50 Helpful vote Comments

K***e

Bulgaria

Verified Purchase

5 .0

2026-01-18

For our small data center, this was a practical way to increase capacity over existing single-mode fiber instead of pulling new cable. The 1510nm CWDM optical module fit into our channel plan and gave stable 10Gbps connectivity at a sensible cost.

121 Helpful vote Comments

R***n

Nepal

Verified Purchase

4 .0

2026-01-10

The shipment arrived safely and each LC duplex optical transceiver was sealed properly. The courier tracking did not update for a few days, which made project scheduling a little harder, but the package showed up intact.

22 Helpful vote Comments

I***y

Turkey

Verified Purchase

5 .0

2025-12-30

Bought these modules for a 10GbE fiber uplink between a warehouse and the main office. Link establishment was fast, and the DOM monitoring helped us confirm that the fiber loss was within budget. Exactly what we needed for a 40km SMF CWDM link.

97 Helpful vote Comments

N***s

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-11-05

Our field team used this 10G 1510nm CWDM transceiver on a backhaul segment serving a distributed site. The deployment itself was indoors in a controlled network cabinet, so the listed 0–70°C commercial operating range was appropriate for the enclosure conditions. After validating the end-to-end optical budget, the duplex LC SMF connection performed consistently under normal production traffic, camera aggregation, and scheduled backups. DOM values were especially useful when comparing link health before and after cleaning a connector.

112 Helpful vote Comments

K***s

Denmark

Verified Purchase

5 .0

2025-10-15

We keep several of these 10G CWDM SFP+ modules as spares for field service. The 1510nm wavelength, 40km distance, and LC duplex interface are clearly labeled, which reduces mistakes when technicians are working with several CWDM channels.

115 Helpful vote Comments

P***n

Macao

Verified Purchase

4 .0

2025-09-26

The 10G CWDM SFP+ modules arrived in good condition and were individually protected. The outer shipping carton had a small dent from transit, but nothing inside was affected.

37 Helpful vote Comments

G***z

Finland

Verified Purchase

5 .0

2025-09-17

Our 1510nm channel came up instantly over existing single-mode fiber.

61 Helpful vote Comments

L***s

Belarus

Verified Purchase

5 .0

2025-08-21

Deployed this 40km 1510nm CWDM SFP+ transceiver into our data center multiplexer. The duplex LC connector clicked firmly into our patch panel, and our 10G link came right up at full line rate without any port flapping. Solid engineering.

102 Helpful vote Comments

E***n

Indonesia

Verified Purchase

5 .0

2025-06-12

DDM telemetry readouts are spot on in our aggregation layer.

51 Helpful vote Comments

J***n

Hungary

Verified Purchase

5 .0

2025-04-21

This thing was ultra cheap, worked amazingly at advertised speeds and came super Fast. awesome service and support great product. will def. buy again in a heartbeat

163 Helpful vote Comments

M***e

Lithuania

Verified Purchase

5 .0

2025-04-16

These were evaluated as part of a multi-vendor 10GbE switch refresh where we needed a coded 1510nm CWDM 40km SFP+ optical module that could be matched to the host-side compatibility requirement. We ran traffic, optical diagnostics, and link flap tests across a single-mode fiber span with cross-connects, ODFs, and a passive CWDM system. The modules maintained stable receive power and clean 10G links, while SFF-8472 diagnostics made it easy to document baseline readings for future maintenance. Good fit for data center interconnects, enterprise campuses, and remote network rooms.

134 Helpful vote Comments

F***l

Belgium

Verified Purchase

5 .0

2025-04-07

DOM levels report solid optical margins on single-mode patch cables.

62 Helpful vote Comments

J***n

Hungary

Verified Purchase

5 .0

2025-03-08

Used these optical modules for a 1510nm CWDM point-to-point circuit on SMF. Both ends were linked at 10G and passed our overnight traffic test without packet loss. The modules also seated firmly in the SFP+ cages.

108 Helpful vote Comments

T***t

United States

Verified Purchase

5 .0

2025-02-06

I have ordered from them for years. you can always reach someone to help you with your problem. i recommend l-p.com.

32 Helpful vote Comments

T***d

Republic of Korea

Verified Purchase

5 .0

2025-02-05

Thank you so much. Would shop again

103 Helpful vote Comments

G***g

United States

Verified Purchase

5 .0

2024-11-09

Just as described, shipped out in a timely manner.

105 Helpful vote Comments

M***r

Norway

Verified Purchase

5 .0

2024-10-15

These 10/25/40G Transceiver Modules are cheaper than other stores, but the quality don't let me down. Highly recommend!

201 Helpful vote Comments

J***r

Indonesia

Verified Purchase

5 .0

2024-10-11

Order was delivered on time, with extremely Fast and helpful support

16 Helpful vote Comments

R***d

Thailand

Verified Purchase

5 .0

2024-10-06

Great selection and easy to check out.

91 Helpful vote Comments

J***n

United States

Verified Purchase

5 .0

2024-04-19

We didn't have any trouble ordering what we needed...very easy!

139 Helpful vote Comments

T***a

Netherlands

Verified Purchase

5 .0

2024-03-22

Great website and good product reviews.

69 Helpful vote Comments

S***o

South Africa

Verified Purchase

5 .0

2024-03-16

Brilliant product, delivered earlier than originally stated and work excellent

28 Helpful vote Comments

Y***u

Ireland

Verified Purchase

5 .0

2024-02-16

Very satisfied, Very Fast on delivery and I'm sure I will need to order again soon.

36 Helpful vote Comments

J***r

United States

Verified Purchase

5 .0

2023-12-09

I am very happy

156 Helpful vote Comments

O***n

Cambodia

Verified Purchase

5 .0

2023-11-13

The website is user friendly, I can find what I need easily. And the service is great, they answered all my questions patiently. Enjoy doing business with you!

178 Helpful vote Comments

Z***m

France

Verified Purchase

5 .0

2023-10-03

Great service, Fast shipping and great pricing.

101 Helpful vote Comments

C***s

Finland

Verified Purchase

5 .0