1.
Opt Express
; 32(6): 10230-10240, 2024 Mar 11.
Artículo
en Inglés
| MEDLINE
| ID: mdl-38571239
RESUMEN
A four-channel ultrawideband photodetector (PD) module with a size of 26.1 mm ×33.2 mm × 8.5 mm has been demonstrated in our laboratory. We propose a method to improve the bandwidth of the PD module based on compensating parasitic parameters by dual resistance regulation on the P and N terminals of the PD chip. A small signal equivalent circuit model with package matching network is established for the PD module, and the effectiveness of the proposed method and the accuracy of the model are verified by experiments. A four-channel photodetector module with a -3â dB bandwidth of up to 67â GHz is fabricated by using photodetector chips with -3â dB bandwidths of 46â GHz, and the responsivity is up to 0.50A/W.