OPTICAL MODULE

An optical module (200), comprising a first circuit board (300) and a tunable laser module (600), wherein the tunable laser module (600) comprises a packaging cavity (600c) and a second circuit board (600a); a light-emitting chip (651), a functional electrical chip group, a wavelength selection component, a shifter (655) and a phase shifter (654) are respectively arranged inside the packaging cavity (600c); a second MCU and a power conversion chip (600a2) are arranged on a surface of the second circuit board (600a); the functional electrical chip group comprises an analog switch (665), a current driving chip (666) and a monitoring chip (667); the current driving chip (666) and the monitoring chip (667) are transferred into the packaging cavity (600c) to reduce the area of the second circuit board (600a), thereby reducing the volume of the tunable laser module (600); and according to a first enable control signal that is output by the second MCU, the analog switch (665) controls a polling connection between th