Polarization-independent optical packet change-over switch

摘要

Input optical header (2) delimiter is optically unidirectionally connected to both header detection and resetting block (60), and optical intermediate memory storage (7). A generator (5) of control signals and packet headers comprises at least two control signal sources (41; 42) operating in a continuous or pulse operating mode. The control signal sources (41; 42) are optically unidirectionally connected via at least two optical gates (51; 52) and at least two polarization controllers (61; 62), to an optical combiner (6) of the control signals and data portions of the optical packets. Said optical combiner (6) of the control signals and the data portions is optically unidirectionally connected via a switching segment (8) and an optical filter (91) to an input optical wave-selective member (9) with connected new optical headers from the header detection and resetting block (60) of the optical packets leading to the outputs (ji1, ji2 through jiy) of the optical fibers. The switching segment (8) comprises: an optical balance stage (81) for setting a desired level of the optical signal, which is optically unidirectionally connected by optical fiber to an optical directional divider (82); wherein the optical directional divider (82) for passing the optical signals and division of the optical signals into two polarization planes in the direction (x;y), is bidirectionally optically connected by optical fiber to an optical polarization divider (83), wherein the optical polarization divider (83), serving also as a combiner, is connected by an optical fiber in a loop, to an optical non-linear module (84). Said optical non-linear module (84) is made of at least one highly non-linear optical fiber being selected from the group consisting of Ge (germanium)-doped quartz optical fiber, chalcogenide optical fiber, bismuth optical fiber, fluoride optical fiber, optionally multicomposite optical fiber, containing Pb (lead), Bi (bismuth), Ga (gallium), and in a design of a core and jacket or in a microstructural design with more than one air opening.