Optical transmit device
An optical transmit device includes a conversion device configured to convert an electrical data signal into an optical signal, a control unit configured to change an adjustment value for peaking based on a baud rate of the optical signal, and a driver configured to change a band characteristic of the conversion device based on the adjustment value changed by the control unit.
1 . An optical transmit device comprising:
a conversion device that converts an electrical data signal into an optical signal;
controller that changes an adjustment value for peaking according to a baud rate; and
a driver that changes a band characteristic based on the adjustment value changed by the controller,
the driver changes the band characteristic by adjusting a voltage value of the driver based on the adjustment value, and
a signal type including the baud rate is input into the controller.
2 . The optical transmit device according to claim 1 , wherein the peaking is a characteristic that amplifies an amplitude component in the band characteristic.
3 . The optical transmit device according to claim 1 , wherein the driver changes the band characteristic by adjusting the peaking based on the adjustment value.
4 . The optical transmit device according to claim 1 , wherein the controller includes a memory that stores a table that defines a correspondence relationship between the baud rate and the adjustment value, and determines the adjustment value corresponding to the baud rate based on the table.
5 . The optical transmit device according to claim 4 , wherein the correspondence relationship is a relationship in which the adjustment value decreases as the baud rate decreases.
6 . The optical transmit device according to claim 1 , wherein the controller holds formula information that defines a correspondence relationship between the baud rate and the adjustment value, and calculates the adjustment value corresponding to the baud rate based on the formula information.
7 . The optical transmit device according to claim 6 , wherein the correspondence relationship is a relationship in which the adjustment value decreases as the baud rate decreases.
8 . The optical transmit device according to claim 1 , wherein
the driver includes a first circuit that adjusts the peaking of low frequencies and a second circuit that adjusts the peaking of high frequencies, and
the driver changes the band characteristic by adjusting a first voltage value applied to the first circuit and a second voltage value applied to the second circuit by changing the adjustment value.
9 . The optical transmit device according to claim 1 , wherein the driver changes the band characteristic of the optical transmit device.
10 . The optical transmit device according to claim 1 , wherein the driver changes the band characteristic of the conversion device.
11 . The optical transmit device according to claim 1 , wherein the controller that receives a setting of the baud rate and adaptively changes the adjustment value for peaking according to a received setting, the setting being input from an operation terminal.
12 . The optical transmit device according to claim 1 , wherein the adjustment value is a constant corresponding to a value of a voltage.