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.