Optical packet drop structure of an optical packet switching node of a wavelength division multiplexing optical network, the optical packet drop structure being integrated within a photonic integrated circuit and comprising: - a wavelength demultiplexer (22, 58) comprising an input (22a, 58a) configured to be linked to an input optical link via an input (20a, 20a') of the optical packet drop structure and a plurality of outputs (22b, 58b), - a first wavelength multiplexer (28, 58) comprising a plurality of inputs (28a, 58b) and an output (28b, 58a) configured to be linked to an output optical link via a first output (20b 1, 20a') of the optical packet drop structure, - a second wavelength multiplexer comprising a plurality of inputs and an output configured to be linked to a plurality of receivers via a second output (20b 2, 20b) of the optical packet drop structure, - switching means configured for switching optical packets transmitted by an output (22b, 58b) of the wavelength demultiplexer (22, 58) toward an input (28a, 58b) of the first wavelength multiplexer (28, 58) and/or toward an input of the second wavelength multiplexer, said switching means comprising - splitting means in the form of an optical splitter configurable to transmit an optical signal received at an input of the switching means toward a first (34b 1) and a second (34b 2) outputs of the switching means, - a first optical gate (38 1) located at the first output (34b 1) of the switching means and configurable to be switched between a passing state wherein all the packets are transmitted and a blocking state wherein all the packets are filtered out, - a second optical gate (38 2) located at the second output (34b 2) of the switching means and configurable to be switched between a passing state wherein all the packets are transmitted and a blocking state wherein all the packets are filtered out. - a wavelength demultiplexer (22, 58) comprising an input (22a, 58a) configured to be linked to an input optical link via an input (20a, 20a') of the optical packet drop structure and a plurality of outputs (22b, 58b), - a first wavelength multiplexer (28, 58) comprising a plurality of inputs (28a, 58b) and an output (28b, 58a) configured to be linked to an output optical link via a first output (20b 1, 20a') of the optical packet drop structure, - a second wavelength multiplexer comprising a plurality of inputs and an output configured to be linked to a plurality of receivers via a second output (20b 2, 20b) of the optical packet drop structure, - switching means configured for switching optical packets transmitted by an output (22b, 58b) of the wavelength demultiplexer (22, 58) toward an input (28a, 58b) of the first wavelength multiplexer (28, 58) and/or toward an input of the second wavelength multiplexer, said switching means comprising - splitting means in the form of an optical splitter configurable to transmit an optical signal received at an input of the switching means toward a first (34b 1) and a second (34b 2) outputs of the switching means, - a first optical gate (38 1) located at the first output (34b 1) of the switching means and configurable to be switched between a passing state wherein all the packets are transmitted and a blocking state wherein all the packets are filtered out, - a second optical gate (38 2) located at the second output (34b 2) of the switching means and configurable to be switched between a passing state wherein all the packets are transmitted and a blocking state wherein all the packets are filtered out. - splitting means in the form of an optical splitter configurable to transmit an optical signal received at an input of the switching means toward a first (34b 1) and a second (34b 2) outputs of the switching means, - a first optical gate (38 1) located at the first output (34b 1) of the switching means and configurable to be switched between a passing state wherein all the packets are transmitted and a blocking state wherein all the packets are filtered out, - a second optical gate (38 2) located at the second output (34b 2) of the switching means and configurable to be switched between a passing state wherein all the packets are transmitted and a blocking state wherein all the packets are filtered out.