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We present the work-in-progress on a synchronized photon source in the telecom range, based on the process of Spontaneous Parametric Downconversion(SPDC) in a periodically poled KTP nonlinear crystal (PPKTP). The envisioned device consists of two main components: a source of correlated photon pairs and a time multiplexing system that synchronizes one of the photons with a clock tick, using timing information from the arrival of the herald photon.The first component is already implemented and under characterization: a 532 nm single longitudinal mode laser (1 MHz bandwidth) pumps the nonlinearcrystal. Correlated photons are generated at 1550 nm ("signal") and at 810 nm ("idler") by SPDC. The idler photon is used as a herald. We have studied theperformance of the system for different pump powers, measuring single counts at the idler beam, coincidences and the coincidence-to-accidental ratio (CAR).Also, we characterized air-to-fiber coupling, obtaining an 11% heralding efficiency. The output spectra was measured for different crystal temperatures.Regarding the time multiplexing system, the goal is to synchronize the 1550 nm photon arrival with an external clock tick, in order to obtain a deterministicsingle photon source. This approach consists in using the timing information in the detection of the idler photon to modify the signal's path so that it exits the system at an specific time. The active path modification will be done by a series of fast optical switches connected to a binary division fiber network.We present a detailed analysis and a simulation of the source statistics including losses and non-ideal components. An expression of the probabilitydistribution including dark counts in the 810 nm detector and losses in both idler and signal branches is given. We tested this expression with a computational simulation of the complete experiment, founding good agreement between them.