We will discuss a versatile and practical approach for the generation of high-quality polarization entanglement in a fully guided-wave fashion. The experimental setup relies on a high-brilliance integrated waveguide generator producing
paired photons at a telecom wavelength, associated with an advanced interferometric device. The latter is capable of creating any pure polarization entangled state, and allows manipulation of single-photon bandwidths that can be chosen at will over five orders of magnitude, ranging from tens of MHz to several THz. With this setup, excellent entanglement fidelities for particular spectral bandwidths, i.e. 25 MHz, 540 MHz and 80 GHz, are obtained proving the relevance of the approach. We will show that this source stands as an excellent candidate for addressing fundamental quantum optics questions as well as a wide range of quantum network applications, ranging from dense division multiplexing quantum key distribution to heralded optical quantum memories and repeaters.