Optical Transceivers, AOC & DAC — China Supplier & Manufacturer
Optical transceivers convert electrical signals to optical for fiber links between switches, routers and OLTs. Fiber Optic Telecom (FOT) supplies 10G to 1.6T transceivers in SFP+, XFP, SFP28, QSFP+, QSFP28, QSFP-DD and OSFP form factors, plus active optical cables (AOC) and passive direct attach cables (DAC) for short-reach data-center and telecom links.
Model Comparison
| Series | Form factor | Data rate | Reach options |
|---|---|---|---|
| 10G SFP+ Series | SFP+ | 10G | 300 m to 80 km |
| 10G XFP Series | XFP | 10G | 300 m to 80 km |
| 25G SFP28 Series | SFP28 | 25G | 100 m to 10 km |
| 40G QSFP+ Series | QSFP+ | 40G | 100 m to 40 km |
| 100G QSFP28 Series | QSFP28 | 100G | 100 m to 80 km |
| 400G & 800G Series | QSFP-DD | 400G / 800G | 500 m to 40 km |
| 1.6T OSFP Series | OSFP | 1.6T | 500 m to 2 km |
| Active Optical Cables | AOC | 10G–100G | 1-**m |
| Direct Attach Cables | DAC | 10G–100G | 1–7 m |
Specifications reflect the published catalog. Confirm the exact model, optional features and compatibility with FOT before ordering.
How to Choose
- Match the form factor to the host port — SFP+ for 10G, SFP28 for 25G, QSFP+ for 40G, QSFP28 for 100G, QSFP-DD for 400G/800G and OSFP for 1.6T. The module must physically and electrically match the switch port.
- Pick the wavelength and reach for the span — SR for 100 m, LR for 10 km, ER for 40 km, ZR for 80 km; BIDI saves fiber, CWDM/DWDM multiplex many wavelengths over one fiber.
- Choose AOC or DAC for short reach — passive DAC is lowest cost up to ~5 m; AOC extends reach and is lighter for 1–**m links between adjacent racks.
- Confirm single-mode vs. multimode — multimode (850 nm) for short data-center links; single-mode (1310/1550 nm) for long-reach telecom.
- Verify compatibility before ordering — transceivers depend on the host switch firmware and vendor code. Share your switch model so FOT can confirm the listed part number works in your port.
Frequently Asked Questions
Equipment Buyer Questions
What is the difference between SR, LR, ER and ZR?
SR uses multimode 850 nm for short reach (≤100 m); LR uses 1310 nm single-mode for 10 km; ER reaches 40 km; ZR reaches 80 km on 1550 nm single-mode.
What is a BIDI transceiver?
A Bi-Directional transceiver uses two wavelengths (e.g. Tx1490/Rx1550) to send and receive over a single fiber, doubling fiber utilization compared to duplex modules.
When should I use an AOC or DAC instead of a transceiver?
For short links between adjacent racks, AOCs and DACs cost less than two transceivers plus patch cords. Passive DAC suits ≤5 m; AOC extends reach and reduces weight.
Are FOT transceivers compatible with my switch?
Compatibility depends on the host switch vendor and firmware. Share your switch model and port type so FOT can confirm the listed part number before ordering.
What data rates does FOT supply?
The catalog covers 10G SFP+/XFP, 25G SFP28, 40G QSFP+, 100G QSFP28, 400G/800G QSFP-DD and 1.6T OSFP, plus AOC and DAC assemblies from 10G to 100G.
Products in this Category
- 10G SFP+ Series
- 10G XFP Series
- 25G SFP28 Series
- 40G QSFP+ Series
- 100G QSFP28 Series
- 400G & 800G Series
- 1.6T OSFP Series
- Active Optical Cables Series
- Direct Attach Cables Series
Request a Quote · sales@fiberoptictel.com · +86-158 0028 0091