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DTSTAMP:20250110T023312Z
LOCATION:Hall B5 (2)\, B Block\, Level 5
DTSTART;TZID=Asia/Tokyo:20241204T151300
DTEND;TZID=Asia/Tokyo:20241204T152700
UID:siggraphasia_SIGGRAPH Asia 2024_sess119_papers_856@linklings.com
SUMMARY:Coherent Optical Modems for Full-Wavefield Lidar
DESCRIPTION:Technical Papers\n\nParsa Mirdehghan (University of Toronto, V
 ector Institute); Brandon Buscaino (Ciena Corporation); Maxx Wu (Universit
 y of Toronto, Vector Institute); Doug Charlton and Mohammad E. Mousa-Pasan
 di (Ciena Corporation); and Kiriakos N. Kutulakos and David B. Lindell (Un
 iversity of Toronto, Vector Institute)\n\nThe advent of the digital age ha
 s driven the development of coherent optical modems---devices that modulat
 e the amplitude and phase of light in multiple polarization states. These 
 modems transmit data through fiber optic cables that are thousands of kilo
 meters in length at data rates exceeding one terabit per second. This rema
 rkable technology is made possible through near-THz-rate programmable cont
 rol and sensing of the full optical wavefield. While coherent optical mode
 ms form the backbone of telecommunications networks around the world, thei
 r extraordinary capabilities also provide unique opportunities for imaging
 . Here, we repurpose off-the-shelf coherent optical modems to introduce fu
 ll-wavefield lidar: a type of random modulation continuous wave lidar that
  simultaneously measures depth, axial velocity, and polarization. We demon
 strate this modality by combining a 74 GHz-bandwidth coherent optical mode
 m with free-space coupling optics and scanning mirrors. We develop a time-
 resolved image formation model for this system and formulate a maximum-lik
 elihood reconstruction algorithm to recover depth, velocity, and polarizat
 ion information at each scene point from the modem's raw transmitted and r
 eceived symbols. Compared to existing lidars, full-wavefield lidar promise
 s improved mm-scale ranging accuracy from brief, microsecond exposure time
 s, reliable velocimetry, and robustness to interference from ambient light
  or other lidar signals.\n\nRegistration Category: Full Access, Full Acces
 s Supporter\n\nLanguage Format: English Language\n\nSession Chair: Qi Sun 
 (New York University)
URL:https://asia.siggraph.org/2024/program/?id=papers_856&sess=sess119
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