An integrated multi-channel photonic radio-frequency, RF, receiver system , the system comprising: a master oscillator comprising a laser source configured to generate laser light; a local oscillator, LO, path comprising an LO generator , an LO modulator , an optical LO filter , and an optical amplifier optically coupled and configured to generate an LO signal, wherein the LO modulator is coupled to the master oscillator and the LO generator is coupled to the LO modulator and is configured to generate an electrical signal; a plurality of RF-modulation channels ; a plurality of channel filters (136-1, ..., 136-M) coupled to the plurality of RF-modulation channels and configured to produce a plurality of filtered RF-modulated optical signals; an optical switch configured to couple the plurality of RF-modulation channels to the plurality of channel filters (136-1, ..., 136-M); and an optical combiner configured to combine the LO signal with each filtered RF-modulated optical signal of the plurality of filtered RF-modulated optical signals to generate up- or down-converted optical signals, wherein: each channel of the plurality of RF-modulation channels includes a channel laser (132-1, ..., 132-N) coupled to a channel modulator (134-1, ..., 134-N), and the LO path and channel lasers (132-1, ..., 132-N) of the plurality of RF-modulation channels are fed by and wavelength locked to an operating wavelength of the laser light of the master oscillator . a master oscillator comprising a laser source configured to generate laser light; a local oscillator, LO, path comprising an LO generator , an LO modulator , an optical LO filter , and an optical amplifier optically coupled and configured to generate an LO signal, wherein the LO modulator is coupled to the master oscillator and the LO generator is coupled to the LO modulator and is configured to generate an electrical signal; a plurality of RF-modulation channels ; a plurality of channel filters (136-1, ..., 136-M) coupled to the plurality of RF-modulation channels and configured to produce a plurality of filtered RF-modulated optical signals; an optical switch configured to couple the plurality of RF-modulation channels to the plurality of channel filters (136-1, ..., 136-M); and an optical combiner configured to combine the LO signal with each filtered RF-modulated optical signal of the plurality of filtered RF-modulated optical signals to generate up- or down-converted optical signals, wherein: each channel of the plurality of RF-modulation channels includes a channel laser (132-1, ..., 132-N) coupled to a channel modulator (134-1, ..., 134-N), and the LO path and channel lasers (132-1, ..., 132-N) of the plurality of RF-modulation channels are fed by and wavelength locked to an operating wavelength of the laser light of the master oscillator . each channel of the plurality of RF-modulation channels includes a channel laser (132-1, ..., 132-N) coupled to a channel modulator (134-1, ..., 134-N), and the LO path and channel lasers (132-1, ..., 132-N) of the plurality of RF-modulation channels are fed by and wavelength locked to an operating wavelength of the laser light of the master oscillator . <EOS>