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- Description
- Specifications
This fixed-wavelength SFP emits at 1539.77 nm, ITU channel 47 on the 100 GHz grid. The 100 GHz grid puts channel 47 at 1539.77 nm, with channel 48 at 1538.98 nm on one side and channel 46 at 1540.56 nm on the other. It is one of 40 fixed channels, numbered 20 to 59, and this one is the 1539.77 nm channel in that span of 1530.33 to 1561.42 nm. The optical link budget is 28 dB. It uses a dual LC/PC connector; only PC or UPC patch cords are supported, not APC.
Receiver input is -28.0 to -9.0 dBm when power-limited, and the receiver damage threshold is +5 dBm. Operating temperature is 0 to 70 C, with storage from -40 to 85 C. For short single-mode runs, at least 1 dB of attenuation prevents receiver damage and at least 9 dB avoids overload.
The 1490 nm CWDM SFP is the coarse-wavelength choice at 1490 nm. It is a hot-swappable device for Gigabit Ethernet SFP ports on Cisco switches and routers.
Cisco interface cards covers further transceivers.
Related: Cisco DWDM transceiver parts
| Part number | DWDM-SFP-3977 |
| Type | DWDM SFP, fixed wavelength, 100 GHz ITU grid |
| Wavelength | 1539.77 nm |
| ITU channel | 47 |
| Data rates | Gigabit Ethernet; Fibre Channel 1 and 2 Gbps |
| Link budget | 28 dB |
| Connector | dual LC/PC (PC or UPC only) |
| Transmit power | 0 to 4.0 dBm average |
| Receiver input wavelength | 1530 to 1565 nm |
| Operating temperature | 0 to 70 C |
| Dimensions | 8.5 x 13.4 x 56.5 mm |