title: Continuously tunable reflective-type optical delay lines using microring resonators.
abstract: We present a reflective-type optical delay line using waveguide side-coupled 13 microring resonators terminated with a sagnac loop reflector. Light passes through the microring resonator sequence twice, doubling the delay-bandwidth product. Group delay is tuned by p-i-p type microheaters integrated directly in the microring waveguides. Experiment demonstrates that the delay line can potentially buffer 18 bits and the delay can be continuously tuned for 100 ps with a power tuning efficiency of 0.34 ps/mW. Eye diagrams of a 20-Gbps PRBS signal after 10 and 110 ps delays are also examined.
authors: Jingya
authors: J
authors: Xie
authors: Linjie
authors: L
authors: Zhou
authors: Zhi
authors: Z
authors: Zou
authors: Jinting
authors: J
authors: Wang
authors: Xinwan
authors: X
authors: Li
authors: Jianping
authors: J
authors: Chen