Keysight 81623C Tunable Laser Source  

*Purpose

The Keysight 81623C is a high-performance tunable laser source designed for precision optical testing in R&D, manufacturing, and quality control of photonic components and systems.  

Key Features

Wide Tunability** – C-band (1525–1565 nm) or L-band (optional) coverage.  

High Power & Stability** – Up to **10 dBm output**, excellent power and wavelength stability.  

Low Noise & Narrow Linewidth** – Ideal for **coherent communications** testing.  

Modulation Capability** – Supports **external analog/digital modulation** for dynamic testing.  

Automation-Friendly** – **GPIB, LAN (LXI), USB** interfaces for system integration.  

*Typical Applications* 

DWDM** component characterization (filters, switches, multiplexers)  

EDFA gain & noise figure** measurements  

Coherent optics** (QPSK, 16-QAM) validation  

Fiber Bragg grating (FBG)** and passive device testing