We are troubleshooting intermittent packet loss on a 1530nm channel. Can DDM help us determine whether the issue is the module or the fiber path?

Yes. Compare transmit and receive power readings at both ends, then check whether values change over time or with temperature. Low receive power at one end often points to fiber, connector, MUX port, or splice loss, while abnormal temperature, bias current, or transmit power may indicate a module issue.

Our traffic-control cabinet may reach -10°C overnight in winter and more than 60°C during the day in summer. Can we use this 1530nm CWDM SFP?

No. A commercial module rated from 0°C to 70°C is not designed for sub-zero conditions. For traffic, roadside, utility, or outdoor deployments, select an industrial-grade 1530nm CWDM SFP with a suitable extended operating range.

We are using this LS-CW531G-80C module for a 1G Fiber Channel storage link rather than Ethernet. Is it suitable for that application?

Yes. The module supports up to 1.25Gbps and is suitable for 1.063Gbps Fiber Channel applications, assuming the host device accepts a compatible SFP module and the optical budget matches the actual fiber path.

We are adding a new 1530nm channel to an existing CWDM ring. Our switches already have free 1G SFP slots — do the ports need any special configuration before we insert this module?

Usually, no wavelength-specific switch configuration is required. The switch sees the module as a standard 1G optical SFP. The important part is connecting it to the 1530nm port of the CWDM MUX/DEMUX and using a matching 1530nm module at the remote end.

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Dell CWDM-SFP-1530 Compatible LINK-PP 1G SFP CWDM 1530nm 80km Duplex LC DDM SMF Optical Transceiver Module

Name: Dell CWDM-SFP-1530 Compatible LINK-PP 1G SFP CWDM 1530nm 80km Duplex LC DDM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 224113
Price: 43.86 USD
Availability: InStock
Rating: 4.9 (13 reviews)

# 224113

Product: Dell CWDM-SFP-1530 Compatible LINK-PP 1G SFP CWDM 1530nm 80km Duplex LC DDM SMF Optical Transceiver Module
SKU: 224113
P/N: LS-CW531G-80C
Price: $ 51
Stock: 155 in Stock
Sold: 666
Product URL: https://www.l-p.com/products/492824.htm

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Manufacture: LINK-PP

P/N: LS-CW531G-80C

Compatible:: Cisco; LINK-PP; Allied Telesis; Arista; Brocade; Ciena; Dell; Extreme; Juniper; Netgear

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

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Dell CWDM-SFP-1530 Compatible LINK-PP 1G SFP Specifications

CWDM-SFP-1530 is a 1530nm CWDM SFP module that supports single-mode fiber transmission up to 80km. It combines a DFB laser with a PIN photodiode to ensure stable and reliable signal transmission. Additionally, it features real-time digital diagnostic monitoring for effortless link status tracking.

Dell Part Number	CWDM-SFP-1530	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1530nm	Max Cable Distance	80km
Connector	Duplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	-1 to +4dBm	RX Power	-26 to -1dBm
Receiver Sensitivity	-26dBm	Receiver Overload	-1dBm
EMC (Electro Magnetic Comnatihilitv)	Supported	DDM	Supported
Operating Temperature Range	0 to 70°C	Protocols	SFP MSA、SFF-8472

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Q: We are troubleshooting intermittent packet loss on a 1530nm channel. Can DDM help us determine whether the issue is the module or the fiber path? By M***s on 2026-03-16

A: Yes. Compare transmit and receive power readings at both ends, then check whether values change over time or with temperature. Low receive power at one end often points to fiber, connector, MUX port, or splice loss, while abnormal temperature, bias current, or transmit power may indicate a module issue. By admin on 2026-03-17
Q: Our traffic-control cabinet may reach -10°C overnight in winter and more than 60°C during the day in summer. Can we use this 1530nm CWDM SFP? By H***r on 2025-11-13

A: No. A commercial module rated from 0°C to 70°C is not designed for sub-zero conditions. For traffic, roadside, utility, or outdoor deployments, select an industrial-grade 1530nm CWDM SFP with a suitable extended operating range. By admin on 2025-11-14
Q: We are using this LS-CW531G-80C module for a 1G Fiber Channel storage link rather than Ethernet. Is it suitable for that application? By K***n on 2025-10-18

A: Yes. The module supports up to 1.25Gbps and is suitable for 1.063Gbps Fiber Channel applications, assuming the host device accepts a compatible SFP module and the optical budget matches the actual fiber path. By admin on 2025-10-19
Q: We are adding a new 1530nm channel to an existing CWDM ring. Our switches already have free 1G SFP slots — do the ports need any special configuration before we insert this module? By D***n on 2025-06-19

A: Usually, no wavelength-specific switch configuration is required. The switch sees the module as a standard 1G optical SFP. The important part is connecting it to the 1530nm port of the CWDM MUX/DEMUX and using a matching 1530nm module at the remote end. By admin on 2025-06-20

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B***n

Cambodia

Verified Purchase

5 .0

2026-05-18

Our central NOC monitors real-time DOM voltage and laser temperature via SNMP. The module stays well within its 0°C to 70°C commercial threshold even under 100% throughput.

105 Helpful vote Comments

L***l

New Zealand

Verified Purchase

5 .0

2026-05-02

Locked instantly on our 1530nm CWDM Mux channel, zero packet loss across 65km.

49 Helpful vote Comments

V***n

Poland

Verified Purchase

5 .0

2026-03-04

Essential 1G CWDM optic for long-haul aggregation, flawless so far.

50 Helpful vote Comments

O***y

Ukraine

Verified Purchase

5 .0

2026-02-24

Great budget-saver for our regional campus fiber link. (•‿•)

70 Helpful vote Comments

E***r

Nepal

Verified Purchase

5 .0

2026-02-10

We use passive CWDM multiplexing to carry several Gigabit services over a limited single-mode fiber pair. This 1530nm 1G SFP transceiver integrates cleanly into the wavelength plan and pairs correctly with the matching CWDM channel. The module’s SFP MSA and SFF-8472 DDM support matters to us because we collect optical power, temperature, and bias current data through our monitoring platform. In practice, it has been a cost-effective way to extend Ethernet connectivity to a remote site without adding new outside plant fiber.

116 Helpful vote Comments

X***n

Turkey

Verified Purchase

5 .0

2025-12-30

Picked up 8 units of this 1530nm CWDM 1G SFP module for our metro ring extension. Optical power output sits stably at +2dBm and DDM tracking on the CLI makes remote diagnostics super straightforward.

87 Helpful vote Comments

M***r

Austria

Verified Purchase

5 .0

2025-11-28

Stable optical power budget and crisp DFB laser output.

67 Helpful vote Comments

C***n

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-11-05

Our operations team installed these 1G CWDM SFP optical transceivers in an indoor equipment room for a long-distance Gigabit Ethernet uplink. The module runs stably, and the 1530nm channel lines up correctly with our passive CWDM system.

122 Helpful vote Comments

D***s

Macao

Verified Purchase

4 .0

2025-09-26

Performance is good on our single-mode fiber link, and the 1.25Gbps connection has been stable. Delivery took a little longer than expected due to carrier processing, but the LS-CW531G-80C CWDM module arrived sealed and worked right away.

37 Helpful vote Comments

N***n

Finland

Verified Purchase

5 .0

2025-09-17

Direct plug-in, port came up immediately with valid DOM readouts.

42 Helpful vote Comments

P***d

Ireland

Verified Purchase

5 .0

2025-07-11

We patched this 80km CWDM SFP transceiver through a passive 8-channel MUX over a 75km dark fiber span. The link budget headroom is generous and latency remains rock solid.

93 Helpful vote Comments

F***s

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-05-27

Our field engineers used this 1G 80km SFP for a long-distance uplink serving several access switches at a distributed site. We verified TX/RX optical power before service activation and continued to monitor the data through the module’s DDM interface after deployment. The Duplex LC connection made it easy to integrate with the existing fiber distribution frame, and the single-mode link has remained steady through normal maintenance windows.

148 Helpful vote Comments

W***s

Romania

Verified Purchase

5 .0

2025-05-03

Accurate 1530nm wavelength pass-through, smooth deployment.

69 Helpful vote Comments