Broadband semiconductor optical amplifiers of NIR range based on nanoheterostructures

The series of travelling-wave semiconductor optical amplifiers (SOAs) based on QW-heterostructures used for the production of broadband superluminescent diodes (SLDs) is developed. Small-signal fiber-to-fiber gain of SOA-modules is about 25dB. They possess spectral gain bands of 70–125 nm at 10 dB level. Together they cover the IR-range of 750–1100 nm. Their high reliability at CW output optical power of up to 50 mW ex SMF was demonstrated. An example of the application of one of the developed SOA-modules as an active element of high-performance tunable laser is presented.