Abstract
The Nyquist optical-time-division-multiplexing (OTDM) scheme is expected to realize high spectral efficiency and ultrafast operation over the bandwidth limitation of electrical devices. We proposed a Nyquist OTDM scheme based on optical correlation detection using an impulse response of balanced photo receivers (BPRs), and subtracters. In this letter, we demonstrate our proposed optical correlation detection using BPRs with various bandwidths. We successfully de-multiplex the multiplexed signal by adjusting a subtraction factor at a baud rate of 187.5 Mbaud with a high Q factor of over 20 dB when the BPR bandwidth is 4 or 45 MHz.
