First demonstration of an all analog adaptive equalizer for coherent DP-QPSK links. - Nandakumar Nambath; Mehul Anghan; Nandish Bharat Thaker; Rakesh Ashok; Rashmi Kamran; Arvind Kumar Mishra; Shalabh Gupta (OFC, 2017)

Demonstration of an Analogue Domain Processing IC for Carrier Phase Recovery and Compensation in Coherent Links. - Rakesh Ashok; Sarath Manikandan; Shivangi Chugh; Sandeep Goyal; Rashmi Kamran; Shalabh Gupta (OFC, 2019)

Equalizer-Free Clock Recovery for PAM-4 Optical Interconnects. - Kaushal Patel; Rakesh Ashok; Shalabh Gupta (SPCOM, 2020)

An Analog EIC-PIC Receiver With Carrier Phase Recovery for Self-Homodyne Coherent DCIs. - Shivangi Chugh; Rakesh Ashok; Punit Jain; Sana Naaz; Aboobackkar Sidhique; Shalabh Gupta (IEEE Trans. Circuits Syst. II Express Briefs, 2023)

All Electrical Costas Loop for Carrier-Forwarded Analog Coherent DCI Receivers: System Integration, Characterization, and Measurements. - Rakesh Ashok; Sana Naaz; Punit Jain; Rashmi Kamran; Shalabh Gupta (IEEE Trans. Instrum. Meas., 2024)