Multi-Channel ITU Tunable Light Source DFB Laser Source

  U8134 4Channel laser source offer superior performance for the testing of CWDM, DWDM components, AWG & PLC components, optical amplifiers, and other general purpose fiber optic test and measurement applications. It is specifically designed for high volume CWDM, couplers and PLC prodUtion line application.

  U8134 4Channel laser source is a high stability, compact-sized, fast-starting, and affordable optical laser source. It provides Multichannel high performance, fixed wavelength output. Any two or four and more of the following channels can be provided on request: 1271, 1291, 1311, 1331

Specification

Note: Single-channel model: U8121/U8131, dual-channel model: U8122/U8132, four-channel model: U8124/U8134, etc

DFB principle:

  The basic principle of fiber lasers is to pump light into a section of active fiber (generally erbium-doped fiber or erbium-ytterbium fiber and other fiber doped with rare earth elements), so that the active fiber will have a gain in a certain wavelength range (erbium-doped fiber is usually around 1550nm), if there is a certain frequency selection structure on this section of fiber, then the laser output can be achieved.

  The Distributed Feedback (DFB) fiber laser is a type of fiber laser. Its grating is distributed in the whole resonator, that is, a phase-shift grating is written on the active fiber, and only one grating can achieve light feedback and wavelength selection, so that it has better frequency stability.