This module is a 1.58μm (L-Band) DFB-LD module with single-mode optical fiber. It is suitable for 2.5Gb/s digital optical communication systems.
The FU-68SDF-V802MxxxB module is a wavelength‑selected, bias‑circuit‑integrated DFB‑LD designed for direct‑modulated 2.5 Gb/s digital optical communication and dense‑WDM transmission in the L‑Band. It features a butterfly package, built‑in optical isolator, thermoelectric cooler, and a monitoring photodiode for output power.
The document provides detailed electrical and optical characteristics, thermal data, fiber‑pigtail specifications, and an outline diagram. Key parameters such as emission wavelength, input impedance, forward current limits, and fiber connector type are listed for system designers.
| Emission wavelength | 1.58 µm (L‑Band) |
|---|---|
| Input impedance | 25 Ω |
| Laser optical output power (CW) | 6 mW |
| Maximum forward current | 150 mA |
| Thermistor resistance (25 °C) | 9.5‑10.5 kΩ |
| Cooler current (70 °C) | 0.6‑1 A |
| Fiber mode field diameter | 9.5 ± 1 µm |
| Connector type | FC/PC |
| Optical return loss (connector) | ≥ 40 dB |
The module emits at 1.58 µm, which is in the L‑Band.
The input impedance is 25 Ω.
The maximum forward current is 150 mA.
The pigtail uses an FC/PC connector.