An integrated photonic component for polarization insensitive wavelength multiplexing comprising: - an arrayed waveguide grating, AWG, having an input slab region and an output slab region that are in optical communication by an array of birefringent waveguides, the waveguides of said array of waveguides having a length increment from one waveguide to the next, the output slab region further being in optical communication with a plurality of output waveguides, the input slab region further being in optical communication with at least a first input waveguide and a second input waveguide, said first and second input waveguides being arranged relative to the input slab region at a first and a second position, said first and second positions being matched to the polarization dispersion caused by the birefringence of the waveguides of the array of waveguides, the AWG further having a central channel wavelength, λ c, and a number of channels being spaced apart by a channel spacing, Δ λ AWG; and - a polarization beam splitter comprising a first output waveguide and a second output waveguide, said first and second output waveguides being in optical communication with the first and second input waveguides arranged at the input slab region of the AWG, the polarization beam splitter further comprising a birefringent Mach-Zehnder interferometer, MZI, for splitting an optical input signal into a transverse electric, TE, polarized optical signal and a transverse magnetic, TM, polarized optical signal, the TE polarized optical signal being provided to the first input waveguide arranged at the input slab region of the AWG via the first output waveguide of the polarization beam splitter, and the TM polarized optical signal being provided to the second input waveguide arranged at the input slab region of the AWG via the second output waveguide of the polarization beam splitter, the MZI being configured to have a polarization splitting response that is a periodic function of wavelength of the optical input signal, said polarization splitting response having multiple passbands, wherein the MZI has a free spectral range, FSR, that is matched to the channel spacing of the AWG, Δ λ AWG. - an arrayed waveguide grating, AWG, having an input slab region and an output slab region that are in optical communication by an array of birefringent waveguides, the waveguides of said array of waveguides having a length increment from one waveguide to the next, the output slab region further being in optical communication with a plurality of output waveguides, the input slab region further being in optical communication with at least a first input waveguide and a second input waveguide, said first and second input waveguides being arranged relative to the input slab region at a first and a second position, said first and second positions being matched to the polarization dispersion caused by the birefringence of the waveguides of the array of waveguides, the AWG further having a central channel wavelength, λ c, and a number of channels being spaced apart by a channel spacing, Δ λ AWG; and - a polarization beam splitter comprising a first output waveguide and a second output waveguide, said first and second output waveguides being in optical communication with the first and second input waveguides arranged at the input slab region of the AWG, the polarization beam splitter further comprising a birefringent Mach-Zehnder interferometer, MZI, for splitting an optical input signal into a transverse electric, TE, polarized optical signal and a transverse magnetic, TM, polarized optical signal, the TE polarized optical signal being provided to the first input waveguide arranged at the input slab region of the AWG via the first output waveguide of the polarization beam splitter, and the TM polarized optical signal being provided to the second input waveguide arranged at the input slab region of the AWG via the second output waveguide of the polarization beam splitter, the MZI being configured to have a polarization splitting response that is a periodic function of wavelength of the optical input signal, said polarization splitting response having multiple passbands, wherein the MZI has a free spectral range, FSR, that is matched to the channel spacing of the AWG, Δ λ AWG.