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Cisco

Cisco SFP-CWDM-1590-40 | 1G CWDM SFP | 1590 nm | 40 km | LC SMF | 1000BASE-CWDM | DOM

SKU:SFP-CWDM-1590-40

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Description

Gigabit CWDM SFP for single‑mode fiber links up to 40 km. Fixed 1590 nm ITU‑T CWDM wavelength, duplex LC interface, and integrated digital diagnostics (DOM) for monitoring. Designed for Gigabit Ethernet aggregation, metro access, and fiber‑saving CWDM deployments.

Features

- 40 km reach on 1590 nm CWDM
- Efficient fiber utilization via CWDM multiplexing
- DOM for visibility into link health
- MSA‑compliant SFP for broad device support
- Low power, hot‑swappable design

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: Will this work in any SFP slot?
A: It works in SFP ports that support 1G and CWDM optics; check platform compatibility.

Q: Do I need special patch cords?
A: Standard OS2 single‑mode LC‑LC patch cords are recommended.

Q: Can I mix different CWDM wavelengths on the same fiber?
A: Yes, when used with a passive CWDM mux/demux, multiple CWDM wavelengths can share one fiber pair.

Q: Does it support digital diagnostics?
A: Yes, DOM/DDM is supported for real‑time optical monitoring.

Q: Is this a duplex or BiDi optic?
A: Duplex; it uses separate fibers for transmit and receive.

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 40 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: CWDM access/aggregation, campus links
- Compliance: RoHS

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