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Cisco

Cisco SFP-CWDM-1590-70 | 1G CWDM SFP | 1590 nm | 70 km | LC SMF | 1000BASE-CWDM | DOM

SKU:SFP-CWDM-1590-70

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Description

High‑reach Gigabit CWDM SFP for single‑mode fiber links up to 70 km. Fixed 1590 nm wavelength aligned to the ITU‑T CWDM grid, duplex LC interface, and digital diagnostics (DOM) for proactive monitoring. Ideal for metro rings and extended backhaul where fiber resources are constrained.

Features

- Extended 70 km reach on 1590 nm CWDM
- DOM for real‑time optical health and troubleshooting
- Fiber‑saving multiplexed deployments
- MSA SFP for broad switch/router compatibility
- Low power, hot‑swappable

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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FAQs

Technical Specifications

FAQs

Q: What determines if I can achieve 70 km?
A: Actual reach depends on total link loss, including fiber attenuation, splice/connector losses, and mux/demux insertion loss.

Q: Can it interoperate with another vendor’s 1590 nm CWDM SFP?
A: Generally yes if wavelengths, data rate, and optical specs match; confirm platform compatibility.

Q: Is a CWDM mux/demux required?
A: Not required for point‑to‑point, but recommended when combining multiple wavelengths on the same fiber pair.

Q: Does it support DOM?
A: Yes, digital diagnostics monitoring is supported.

Q: Which connector does it use?
A: LC duplex on single‑mode fiber.

Technical Specifications

- Form factor: SFP (hot‑swappable, MSA compliant)
- Data rate: 1 Gbps (Gigabit Ethernet/1G FC compatible)
- Optical standard: 1000BASE‑CWDM (SMF)
- Wavelength: 1590 nm (ITU‑T G.694.2 CWDM grid)
- Optical reach: up to 70 km over single‑mode fiber (OS2/ITU‑T G.652)
- Connector: LC duplex
- Fiber type: Single‑mode
- Tx type: DFB laser; Rx type: PIN
- Digital diagnostics: DOM/DDM (SFF‑8472)
- Operating temperature: 0 to 70 °C (commercial)
- Applications: Long‑haul CWDM transport, metro/access backhaul
- Compliance: RoHS

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