We have an older SAN storage network running 1.063Gbps Fiber Channel. Can this transceiver work on those ports?

Yes. Besides standard 1.25Gbps Gigabit Ethernet, this module natively supports 1.063Gbps Fiber Channel, making it fully suitable for storage area network links. (Note: If your older SAN switch applies strict vendor-locking, please ensure the module's EEPROM coding matches your switch brand to guarantee recognition.)

Since 1610nm is near the edge of standard single-mode fiber transmission bands, does it suffer higher attenuation or bending loss compared to 1310nm or 1550nm?

Fiber attenuation at 1610nm is slightly higher than at 1550nm, but significantly lower than 1310nm. However, macro-bending losses are more noticeable at 1610nm, so ensure standard fiber bend radius guidelines are maintained.

We have a 25km to 30km single-mode fiber run connected through CWDM Mux/Demux filters. Can this 1610nm 40km SFP transceiver handle that link safely?

In most standard deployments, yes. The 40km design generally provides enough optical margin to handle the fiber distance plus typical filter insertion loss. However, since actual fiber quality and splice counts vary, we always recommend verifying your total route loss against the module's optical power budget before final turn-up.

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FS CW-SFP1G40-61 Compatible LINK-PP 1G SFP CWDM 1610nm 40km Duplex LC DOM SMF Optical Transceiver Module

Name: FS CW-SFP1G40-61 Compatible LINK-PP 1G SFP CWDM 1610nm 40km Duplex LC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 224985
Price: 44.72 USD
Availability: InStock
Rating: 4.8 (13 reviews)

Product: FS CW-SFP1G40-61 Compatible LINK-PP 1G SFP CWDM 1610nm 40km Duplex LC DOM SMF Optical Transceiver Module
SKU: 224985
P/N: LS-CW611G-40C
Price: $ 52
Stock: 46 in Stock
Sold: 474
Product URL: https://www.l-p.com/products/497631.htm

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13 Reviews

3 Questions

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$ 52

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Manufacture: LINK-PP P/N: LS-CW611G-40C SKU: 224985

Compatible:: Cisco; LINK-PP; Alcatel-Lucent; Arista; Avaya; Brocade; Dell; Extreme; FS; Generic; H3C; HPE; HW; Juniper; Mikrotik; Netgear

Wavelength:: 1470nm; 1490nm; 1610nm

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FS CW-SFP1G40-61 Compatible LINK-PP 1G SFP Specifications

CW-SFP1G40-61 is specified as a 1610nm CWDM optical transceiver, employing a DFB laser and a PIN photodiode in a standard SFP footprint. Its single-mode fiber link distance is rated at 40km, with optical dispersion tolerance and loss budget matched to typical metro access spans. Integrated digital optical monitoring continuously reports key parameters (laser bias current, optical power, supply voltage, and operating temperature) over the 0°C to +70°C commercial temperature range.

FS Part Number	CW-SFP1G40-61	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1610nm	Max Cable Distance	40km
Connector	Duplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	-5 to 0dBm	RX Power	-26 to -1dBm
Receiver Sensitivity	-24dBm	Receiver Overload	-1dBm
EMC (Electromagnetic Compatibility)	Supported	DOM Support	Yes
Operating Temperature Range	0 to 70°C	Protocols	SFP MSA、SFF-8472

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Q: We have an older SAN storage network running 1.063Gbps Fiber Channel. Can this transceiver work on those ports? By C***m on 2026-04-05

A: Yes. Besides standard 1.25Gbps Gigabit Ethernet, this module natively supports 1.063Gbps Fiber Channel, making it fully suitable for storage area network links. (Note: If your older SAN switch applies strict vendor-locking, please ensure the module's EEPROM coding matches your switch brand to guarantee recognition.) By admin on 2026-04-06
Q: Since 1610nm is near the edge of standard single-mode fiber transmission bands, does it suffer higher attenuation or bending loss compared to 1310nm or 1550nm? By B***y on 2025-09-02

A: Fiber attenuation at 1610nm is slightly higher than at 1550nm, but significantly lower than 1310nm. However, macro-bending losses are more noticeable at 1610nm, so ensure standard fiber bend radius guidelines are maintained. By admin on 2025-09-03
Q: We have a 25km to 30km single-mode fiber run connected through CWDM Mux/Demux filters. Can this 1610nm 40km SFP transceiver handle that link safely? By D***n on 2025-03-11

A: In most standard deployments, yes. The 40km design generally provides enough optical margin to handle the fiber distance plus typical filter insertion loss. However, since actual fiber quality and splice counts vary, we always recommend verifying your total route loss against the module's optical power budget before final turn-up. By admin on 2025-03-12

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F***t

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2026-04-14

Great price for 40km reach, no packet loss after 2 weeks.

60 Helpful vote Comments

J***e

Argentina

Verified Purchase

5 .0

2026-02-06

We use CWDM to multiplex multiple 1G streams over leased dark fiber. This 1610nm CWDM SFP transceiver slotted right into our edge router without optical attenuation pads needed for our 28km run. Super clean setup!

89 Helpful vote Comments

D***l

Brunei Darussalam

Verified Purchase

5 .0

2026-01-15

Clean optical Tx power, great budget 40km CWDM SFP transceiver!

51 Helpful vote Comments

S***n

Australia

Verified Purchase

5 .0

2025-11-02

We swapped out old optics for these 1610nm CWDM modules on our 3-node metro ring. The 40km reach gave us plenty of headroom on our fiber spans, and the link has been rock-solid for months. DOM monitoring helps us track performance without extra tools. No errors, no drops—just clean 1G Ethernet over CWDM. Perfect for operators adding wavelength services without touching the fiber plant.

95 Helpful vote Comments

V***y

Japan

Verified Purchase

5 .0

2025-08-17

Leasing additional dark fiber pairs between our HQ and backup data center was cost-prohibitive, so we deployed passive CWDM multiplexers. We needed a dedicated 1610nm 1G transceiver to complete our 8-channel topology. The LS-CW611G-40C SFP module integrated seamlessly into our switch uplinks. Latch release is sturdy, duplex LC connectors fit snugly, and the SFF-8472 compliance ensures standard diagnostic alarms trigger properly. Over a 27km route with multiple fusion splices, we achieved a sustained 1.25Gbps throughput with zero frame loss or jitter.

136 Helpful vote Comments

N***y

United States

Verified Purchase

5 .0

2025-02-19

We deployed these LS-CW611G-40C CWDM modules across campus buildings. The 1610nm wavelength pairs perfectly with our CWDM MUX, and the 40km spec gives us plenty of headroom on our 35km fiber run. DOM data shows stable TX power around -2dBm. Solid choice for metro Ethernet backhaul.

125 Helpful vote Comments

J***y

Maldives

Verified Purchase

5 .0

2025-01-29

Deployed these 1610nm CWDM 1G SFP transceivers for enterprise campus inter-building links. The DFB laser output is very stable and DOM diagnostics make fiber attenuation monitoring super easy from the CLI. Highly recommend for campus backbone expansion.

97 Helpful vote Comments

X***k

United Kingdom

Verified Purchase

4 .0

2025-01-18

The 1610nm CWDM module itself works like a charm on our 30km fiber link with great DDM readings. Knocking off one star because the delivery was delayed by two days due to customs clearance. Optic is solid though!

25 Helpful vote Comments

W***k

Germany

Verified Purchase

4 .0

2024-12-28

The optical performance of the 1610nm SFP is 5-star quality—linked instantly across our 20km single-mode fiber with crisp DDM stats. Deducting one star only because the outer cardboard box got slightly crushed during international transit, though the inner packaging protected the optic completely. Good hardware, just needs sturdier courier outer boxes.

32 Helpful vote Comments

M***t

Japan

Verified Purchase

5 .0

2024-12-02

Needed an extra 1610nm channel to free up fiber cores between our primary site and disaster recovery facility. Locked link immediately across single-mode fiber patch cables. Very satisfied with the SNR levels.

131 Helpful vote Comments

P***y

United Kingdom

Verified Purchase

5 .0

2024-11-16

We needed 1G CWDM optics for a client's campus network upgrade. These modules checked all the boxes: 40km reach, DOM, Duplex LC, and SFP MSA compliance. The client's network team was happy with the plug-and-play compatibility.

144 Helpful vote Comments

T***r

India

Verified Purchase

5 .0

2024-10-31

Our team deployed dozens of these across remote base stations for backhaul to our PoP. Each link runs 20–35km over existing aerial fiber, and the modules handle it without breaking a sweat. The receiver sensitivity is more than enough for our loss budgets, and remote monitoring via DDM is a lifesaver for unattended sites. Zero failures after several months in the field.

122 Helpful vote Comments

H***s

Nepal

Verified Purchase

5 .0

2024-10-09

We added channel 1610nm onto our passive 8-channel CWDM MUX to add dedicated gigabit backhaul between two remote offices. Link budget held up nicely with plenty of optical margin to spare. Clean duplex LC interface connection!

126 Helpful vote Comments