Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

A Compact, Low Loss Integrated Continuous-Time Electro Optic-PLL with Maximum Range of > 3.3m

Not Accessible

Your library or personal account may give you access

Abstract

Continuous time (CT) Electro Optic Phase Locked Loops (EOPLLs) can significantly reduce the differential delay required in a Mach-Zehnder Interferometer (MZI) which is used to detect the chirp slope, thereby reducing the MZI area and associated loss. However, CT-EOPLLs produce inter-modulation tone at (fref + fbeat) which creates spurs at offsets of ±(fref + fbeat), ±2(fref + fbeat), ±3( fref + fbeat) from the expected beat tone at the ranging output. In this work, we present a CT-EO-PLL which not only breaks the fundamental trade-off between chirp bandwidth and MZI delay, but also completely eliminates spurs from the PLL and laser output by using IQ single-sideband (SSB) and harmonic reject (HR) mixing. This EO-PLL, integrated in CMOS technology, suppresses the spurs at beat note by > 25dB, enabling us to detect an object at a maximum range of > 3.3m, with a precision of 558µm at 2m distance.

© 2019 The Author(s)

PDF Article
More Like This
Continuous-Time Electro-Optic PLL with Decimated Optical Delay/Loss and Spur Cancellation for LIDAR

Jahnavi Sharma, Sohail Ahasan, Christopher T. Phare, Michal Lipson, and Harish Krishnaswamy
JTu2A.81 CLEO: Applications and Technology (CLEO:A&T) 2018

A Fast-Locking Electro-Optic PLL (EOPLL) with Lock-in Calibration (LIC) and Harmonic Suppression for LiDAR

Jinhai Xiao, Weigang Ge, Siyuan Li, Ning Liang, Maliang Liu, and Yintang Yang
Th1F.3 European Conference and Exhibition on Optical Communication (ECOC) 2022

Electro-optical phase-locked loop for hybrid integrated external cavity laser

Chuxin Liu, Yuyao Guo, Ruiyang Xu, Liangjun Lu, Jianping Chen, and Linjie Zhou
M3F.7 Optical Fiber Communication Conference (OFC) 2023

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved