We are setting up remote LTE cell tower nodes in sub-zero winter conditions — will this module cold-start without issues?

Yes, this module is rated for industrial temperature. For outdoor LTE remote radio head (RRH) deployments, our industrial-grade modules are tested to cold-start and operate reliably across the full range of -40°C to +85°C (-40°F to +185°F).

We're running a 35km link between data centers — do we need single-mode or multi-mode fiber patch cords for this module?

You must use single-mode fiber with duplex LC connectors. Multi-mode fiber is strictly unsuitable for DWDM long-haul links due to extreme modal dispersion at C-band wavelengths.

Can we plug this DWDM module directly into channel 26 of a standard 100GHz ITU grid passive MUX/DEMUX?

Yes, absolutely. This LS-DW2610-40I module is precisely hard-coded to 1556.55nm (Channel 26) in compliance with the standard 100GHz C-Band ITU grid. You can plug it directly into Port/Channel 26 of any standardized passive MUX/DEMUX unit without additional frequency offset adjustment.

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HW DWDM-Sfp10G-1556-55-I Compatible LINK-PP C26 10G SFP+ DWDM 1556.55nm 40km Duplex LC DDM SMF Optical Transceiver Module (Industrial)

Name: HW DWDM-Sfp10G-1556-55-I Compatible LINK-PP C26 10G SFP+ DWDM 1556.55nm 40km Duplex LC DDM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 223424
Price: 257.14 USD
Availability: InStock
Rating: 5 (25 reviews)

# 223424

Product: HW DWDM-Sfp10G-1556-55-I Compatible LINK-PP C26 10G SFP+ DWDM 1556.55nm 40km Duplex LC DDM SMF Optical Transceiver Module (Industrial)
SKU: 223424
P/N: LS-DW2610-40I
Price: $ 299
Stock: 352 in Stock
Sold: 552
Product URL: https://www.l-p.com/products/486058.htm

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Manufacture: LINK-PP

P/N: LS-DW2610-40I

Compatible:: Cisco; LINK-PP; Arista; Brocade; Ciena; Dell; Extreme; FS; Generic; H3C; HW; Juniper; MRV; Netgear

Wavelength:: C24; C25; C26; C27; C28; C29; C30; C31; C32; C34; C35; C36; C37; C38; C39; C40

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HW DWDM-Sfp10G-1556-55-I Compatible LINK-PP C26 10G SFP+ Specifications

DWDM-Sfp10G-1556-55-I defines a 10G SFP+ DWDM optical transceiver at 1556.55nm within the C-band, incorporating a cooled EML laser and PIN photodiode, duplex LC connectivity, up to 40 km reach over single-mode fiber, real-time DDM support, and an operating temperature range of −40 to +85 °C.

HW Part Number	DWDM-Sfp10G-1556-55-I	Vendor Name	LINK-PP
Form Factor	SFP+	Max Data Rate	10.7Gbps
Wavelength	1556.55nm	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: We are setting up remote LTE cell tower nodes in sub-zero winter conditions — will this module cold-start without issues? By V***s on 2026-01-11

A: Yes, this module is rated for industrial temperature. For outdoor LTE remote radio head (RRH) deployments, our industrial-grade modules are tested to cold-start and operate reliably across the full range of -40°C to +85°C (-40°F to +185°F). By admin on 2026-01-12
Q: We're running a 35km link between data centers — do we need single-mode or multi-mode fiber patch cords for this module? By B***n on 2025-08-25

A: You must use single-mode fiber with duplex LC connectors. Multi-mode fiber is strictly unsuitable for DWDM long-haul links due to extreme modal dispersion at C-band wavelengths. By admin on 2025-08-26
Q: Can we plug this DWDM module directly into channel 26 of a standard 100GHz ITU grid passive MUX/DEMUX? By D***y on 2025-06-24

A: Yes, absolutely. This LS-DW2610-40I module is precisely hard-coded to 1556.55nm (Channel 26) in compliance with the standard 100GHz C-Band ITU grid. You can plug it directly into Port/Channel 26 of any standardized passive MUX/DEMUX unit without additional frequency offset adjustment. By admin on 2026-06-25

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R***s

Poland

Verified Purchase

5 .0

2026-05-07

Smooth LC duplex latching and flawless optical power output.

64 Helpful vote Comments

D***l

Belarus

Verified Purchase

5 .0

2026-03-27

Deployed 50 of these DWDM modules in a data center interconnect. Power consumption is low, and the EML/PIN combo gives us a solid link budget. DOM makes troubleshooting super easy when we tweak patch panels.

50 Helpful vote Comments

S***n

South Africa

Verified Purchase

5 .0

2026-03-09

Solid 40km reach on our C26 DWDM link, DOM works great!

51 Helpful vote Comments

J***s

Ireland

Verified Purchase

5 .0

2025-11-22

Tested receiver sensitivity across a patched 36km single-mode fiber line, and error rates stayed well below threshold. The build quality feels rigid, and the duplex LC connector clicks in firmly. Will order another batch for our secondary ring!

79 Helpful vote Comments

S***s

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-10-19

We manage a regional fiber network with 40+ DWDM channels. The LS-DW2610-40I (C26, 1556.55nm) was deployed in 8 locations for a 10G ring upgrade. Over 2 months, we’ve seen stable Rx power between -15 and -12dBm on 35km SMF spans. The DOM data (temperature, Vcc, Tx/Rx bias) integrates into our NMS via SNMP, and the industrial temp range has handled our unsheltered roadside cabinets without a single thermal alarm. The 100GHz grid spacing aligns perfectly with our existing mux/demux, and we’ve had zero interoperability issues with our 10G switches.

126 Helpful vote Comments

L***z

Lithuania

Verified Purchase

5 .0

2025-10-06

We subjected this 10G CWDM optical module to continuous thermal stress testing inside an unheated, remote substation enclosure to simulate harsh winter conditions. The wide-temperature engineering proved its worth — the transmitter exhibited zero frequency drift or signal degradation even during severe ambient temperature fluctuations. Thermal dissipation stayed remarkably low inside high-density switch cages, making it an ideal, rock-solid choice for unconditioned outdoor cabinet deployments and industrial automation backhauls.

135 Helpful vote Comments

K***s

Finland

Verified Purchase

5 .0

2025-10-05

Low power consumption and stable signal across our metro ring.

73 Helpful vote Comments

G***r

Hungary

Verified Purchase

5 .0

2025-08-27

Adding extra 10G pipes over leased dark fiber gets expensive fast. Dropping this C26 1556.55nm 10G SFP+ transceiver into our existing DWDM grid solved our capacity bottleneck overnight at a fraction of lease costs.

101 Helpful vote Comments

S***z

Romania

Verified Purchase

5 .0

2025-06-25

Deployed these LS-DW2610-40I 10G DWDM modules across a 30km single-mode fiber link connecting our remote aggregation nodes. Both Rx and Tx power levels stayed well within target thresholds. Definitely saved our quarterly budget without sacrificing optical reliability.

99 Helpful vote Comments

J***y

Maldives

Verified Purchase

4 .0

2025-06-09

We deployed these 10G DWDM optics across a 35km metro link and achieved rock-solid link-up on the first attempt. The delivery was delayed by 2 days at international customs clearance due to routine import paperwork checks. Product quality is superb, but budget extra transit time for overseas orders.

27 Helpful vote Comments

J***l

Cambodia

Verified Purchase

5 .0

2025-05-22

Deployed this industrial-grade C26 DWDM 10G optical transceiver across our regional dark fiber span using a passive MUX/DEMUX multiplexer, and the physical layer locked on immediately. The module's center wavelength stability on the standard ITU grid prevented any adjacent channel crosstalk, while the low insertion loss kept frame drops to absolute zero during high-load traffic testing. Digital Optical Monitoring (DOM) polled cleanly via SNMP, giving our engineering team real-time visibility into internal operational health across the entire optical link.

143 Helpful vote Comments

D***n

Indonesia

Verified Purchase

5 .0

2025-05-14

DOM monitoring is accurate, easy to read via CLI. Temperature, voltage, and optical power all show up correctly.

91 Helpful vote Comments

N***i

Taiwan, Province of China

Verified Purchase

5 .0

2025-04-28

First time using l-p.com. The website is easy to navigate and placing the order is easy and straightforward. The prices of the Halo TG111-HPE3NV6LF modules that I ordered were less than many other online stores. Found what I wanted very quickly, good price and easy check out.

16 Helpful vote Comments

B***d

United States

Verified Purchase

5 .0

2025-02-26

Generally quick and easy to find what I'm looking for- and fair prices.

25 Helpful vote Comments

c***t

Germany

Verified Purchase

5 .0

2024-10-10

The website is very easy to use, and I appreciate that since a lot of items I order for my technicians I am not aware of. Your website shows exactly what I need and ordering is easy. Really satisfied with the shopping experience.

38 Helpful vote Comments

T***i

United States

Verified Purchase

5 .0

2024-10-04

Link-ppstore is my first choice.

29 Helpful vote Comments

c***t

Canada

Verified Purchase

5 .0