Table 1 A comparison of performances for UTC-PDs with and without DBR layers working on 1550 nm.

From: Modelling and optimization of Ge/GaAs uni-travelling carrier photodiodes

Bias Voltage − 2 V

5 µm

6 µm

7 µm

8 µm

With DBR Layers

Photocurrent (mA)

2.25

2.39

2.62

2.89

Responsivity (A/W)

0.5

0.53

0.59

0.7

Without DBR Layers

Photocurrent (mA)

0.89

1.01

1.08

1.12

Responsivity (A/W)

0.176

0.193

0.235

0.248