Investigation of adjacent channel crosstalk in multichannel monolithically integrated 1.55 μm photoreceiver arrays

Kao-Chih Syao, Kyounghoon Yang, Xiangkun Zhang, Liang-Huang Lu, L.P.B. Katehi, P. Bhattacharya
1997 Journal of Lightwave Technology  
We have investigated adjacent channel crosstalk in 3-, 8-, and 16-channel InP-based monolithically integrated p-i-n/HBT photoreceiver arrays, with a channel bandwidth of 11 GHz. By using a novel monolithically integrated radiation shield, we have been able to reduce the crosstalk to 035 dB at 10 GHz. These parameters represent the best performance in multichannel integrated photoreceiver arrays. The two main components of crosstalk are found to be radiation crosstalk and electrical crosstalk
more » ... trical crosstalk and these are separately dependent on interchannel spacing and single-or dual-source biasing schemes. A electromagnetic full-wave solution shows that the measured crosstalk in arrays without the radiation shield could be dominated by radiation crosstalk, which can be modeled as a capacitive coupling between adjacent channels. Similarly, electrical crosstalk can be modeled by equivalent parasitic resistive and inductive elements. Values of these circuit elements have been determined by analyzing experimental data.
doi:10.1109/50.633582 fatcat:26rzzbpo7zebnl2kkq2lybi5wq