Rofea 'modulator bias controller yakanyatsogadzirirwa Mach-Zehnder modulators kuti ive nechokwadi chekushanda kwakagadzikana munzvimbo dzakasiyana dzekushanda. Zvichienderana neyayo yakazara digitized chiratidzo chekugadzirisa nzira, mutongi anogona kupa yakanyanya kugadzikana kuita.
Iyo controller inopinza yakaderera frequency, yakaderera amplitude dither chiratidzo pamwe ne bias voltage mune modulator. Iyo inoramba ichiverenga zvakabuda kubva kune modulator uye inosarudza mamiriro eiyo bias voltage uye kukanganisa kwakabatana. Iyo itsva bias voltage ichashandiswa mushure memazwi zvichienderana nechiyero chakapfuura. Nenzira iyi, modulator inovimbiswa kushanda pasi peiyo bias voltage.