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Finisar FWLF1634RY17 DWDM 4G long-reach SFP 1563.86nm 80km class
up to 4.25 Gb/s DWDM 4G long-reach SFP transceiver, 1563.86nm (191.7THz, ITU ch17), up to 80km class.
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FWLF1634RY17
- Family
- FWLF1634RY
- Category
- Fiber optic transceiver modules
- Datasheet
- FWLF1634RY17 datasheet (PDF)
FWLF1634RY17 specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FWLF1634RY17 |
| Product family | FWLF1634RY |
| Form factor | SFP |
| Standards / application | 4x FC; 1x/2x FC, GbE and OC-48 LR-2 (rate-select option) |
| Data rate | 0.155–4.25 Gb/s |
| Wavelength | 100 GHz ITU grid C-band, 45 channels: ch17 191.7 THz/1563.86 nm to ch61 196.1 THz/1528.77 nm |
| Laser | Temperature-stabilized DWDM-rated low-dispersion DFB |
| Receiver | APD |
| Reach | Total link budget 26–30 dB @4.25 Gb/s; 31–34 dB @2.5 Gb/s (BER<10⁻¹²) |
| Tx output power | +2 to +5 dBm |
| Rx sensitivity | −28 dBm @2.5 Gb/s; −23 dBm @4.25 Gb/s (BER<10⁻¹²) |
| Rx overload / max input | −9 dBm; damage threshold +6 dBm |
| Extinction ratio | 6.0 dB (≤4.25G); 8.2 dB SONET (rate-select option) |
| Supply voltage | 3.3 V (3.13–3.50 V) |
| Power dissipation | 1.25 W max (Icc 325 mA typ) |
| Operating temperature | −5 to 70 °C case |
| Diagnostics | Digital diagnostics per Finisar AN-2030; enhanced features per DWDM SFP MSA (A2h: laser current, temperature, Tx/Rx power) |
| Compliance | Class 1 laser product |
| Lifecycle | Legacy / end-of-life |
Optical and electrical values are from the Finisar / Coherent family datasheet; temperature grade is per part number. Confirm critical values with us before ordering.
About the Finisar FWLF1634RY17
The Finisar FWLF1634RY17 (now a Coherent Corp. product, formerly II-VI) is a SFP DWDM 4G long-reach optical transceiver for up to 4.25 Gb/s links at 1563.86nm (191.7THz, ITU ch17) over SMF, with reach up to 80km class. This is a legacy Finisar part; we help buyers find remaining stock or a current Coherent alternative. Typical uses: Gigabit Ethernet, 1/2/4G Fibre Channel SAN, SONET OC-48 / STM-16 and CWDM/DWDM metro links.
- Up to 4.25 Gb/s bi-directional links
- Hot-pluggable SFP footprint
- Temperature-stabilized DWDM-rated DFB laser transmitter
- 100 GHz ITU Grid, C-Band
- Wavelength controlled within ±0.1 nm over life and temperature
- Extended link budget with APD receiver technology
FWLF1634RY17: frequently asked questions
What is the Finisar FWLF1634RY17?
The FWLF1634RY17 is a Finisar SFP transceiver for DWDM 4G long-reach at up to 4.25 Gb/s. Finisar is now part of Coherent Corp. (formerly II-VI), and the part number is unchanged. It is used for Gigabit Ethernet, 1/2/4G Fibre Channel SAN, SONET OC-48 / STM-16 and CWDM/DWDM metro links.
What is the maximum distance of the FWLF1634RY17?
The FWLF1634RY17 is specified for up to 80km class over SMF. Long-reach optics may need an attenuator on short links; we can advise based on your link loss.
What is the optical power budget of the FWLF1634RY17?
Per the Finisar family datasheet, the FWLF1634RY17 transmits +2 to +5 dBm and has a receiver sensitivity of −28 dBm @2.5 Gb/s; −23 dBm @4.25 Gb/s (BER<10⁻¹²). Maximum receiver input is −9 dBm; damage threshold +6 dBm.
Does the FWLF1634RY17 support DDM / digital diagnostics?
Yes. Digital diagnostics per Finisar AN-2030; enhanced features per DWDM SFP MSA (A2h: laser current, temperature, Tx/Rx power). Your switch can read live temperature, voltage, laser bias and Tx/Rx power.
Which fiber and connector does the FWLF1634RY17 use?
The FWLF1634RY17 works at 1563.86nm (191.7THz, ITU ch17) over SMF. CWDM/DWDM optics must match the channel of your mux/demux port. Both ends of a link must use the same optical standard.
Will the FWLF1634RY17 work in my Cisco, Juniper, Arista or HPE switch?
The FWLF1634RY17 follows the SFP MSA, so it fits any matching port. It carries Finisar's own EEPROM programming; switches that check the module vendor may need a configuration setting or a vendor-branded optic. Send us your switch model and we confirm before dispatch.
What does the FWLF1634RY17 part number mean?
The FWLF prefix marks Finisar's CWDM / DWDM wavelength-specific SFP family. The remaining characters identify the optical design and build variant.
Is the FWLF1634RY17 still available?
The FWLF1634RY17 is a legacy Finisar part, so new production is limited or ended. Next Gen Networks helps source remaining genuine stock and can suggest a current Coherent alternative with the same reach and wavelength.
What is the FWLF1634RY17 price in India and how do I order?
The Finisar FWLF1634RY17 price in India depends on quantity, delivery city and current stock. Next Gen Networks supplies it with a GST invoice (input tax credit ready) and pan-India dispatch from New Delhi. Send the part number, quantity and delivery city on WhatsApp +91-7827955775 or email Sales@nextgennetworks.in for a GST quote.
What power does the FWLF1634RY17 need?
It runs from 3.3 V (3.13–3.50 V) with power dissipation of 1.25 W max (Icc 325 mA typ).
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Finisar / Coherent family datasheet
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