Board level H-tree optical clock distribution with substrate mode holograms

Jang Hun Yeh, Raymond K Kostuk, Kun Yii Tu

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

This paper describes a design for a board-level free-space optical clock distribution system implemented with substrate mode holograms. The design uses an H-tree distribution scheme to balance propagation delays for different clock paths on each board. The H-component provides four diffracted output beams with approx.11% efficiency for each output, and the required laser power for the clock distribution system is calculated. To provide 80 clock fan-out signals for a five-board system, the clock distribution system requires 4.7 mW of laser power with 10μW of received optical power at each node. The misalignment analysis for the free-space optical system is presented and design considerations are given. The factors causing clock skew and timing jitter in the optical clock distribution system are also examined. An experimental system was demonstrated with a 622-MHz clock signal distributed with 36 ps of timing jitter and less than 10 ps of clock skew.

Original languageEnglish (US)
Pages (from-to)1566-1578
Number of pages13
JournalJournal of Lightwave Technology
Volume13
Issue number7
DOIs
StatePublished - Jul 1995

Fingerprint

Holograms
Laser modes
clocks
Clocks
Substrates
Timing jitter
time measurement
vibration
Lasers
output
fans
Optical systems
misalignment
Fans
lasers
propagation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

Board level H-tree optical clock distribution with substrate mode holograms. / Yeh, Jang Hun; Kostuk, Raymond K; Tu, Kun Yii.

In: Journal of Lightwave Technology, Vol. 13, No. 7, 07.1995, p. 1566-1578.

Research output: Contribution to journalArticle

@article{394bb8192e794ab580f25e6576f0b639,
title = "Board level H-tree optical clock distribution with substrate mode holograms",
abstract = "This paper describes a design for a board-level free-space optical clock distribution system implemented with substrate mode holograms. The design uses an H-tree distribution scheme to balance propagation delays for different clock paths on each board. The H-component provides four diffracted output beams with approx.11{\%} efficiency for each output, and the required laser power for the clock distribution system is calculated. To provide 80 clock fan-out signals for a five-board system, the clock distribution system requires 4.7 mW of laser power with 10μW of received optical power at each node. The misalignment analysis for the free-space optical system is presented and design considerations are given. The factors causing clock skew and timing jitter in the optical clock distribution system are also examined. An experimental system was demonstrated with a 622-MHz clock signal distributed with 36 ps of timing jitter and less than 10 ps of clock skew.",
author = "Yeh, {Jang Hun} and Kostuk, {Raymond K} and Tu, {Kun Yii}",
year = "1995",
month = "7",
doi = "10.1109/50.400725",
language = "English (US)",
volume = "13",
pages = "1566--1578",
journal = "Journal of Lightwave Technology",
issn = "0733-8724",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "7",

}

TY - JOUR

T1 - Board level H-tree optical clock distribution with substrate mode holograms

AU - Yeh, Jang Hun

AU - Kostuk, Raymond K

AU - Tu, Kun Yii

PY - 1995/7

Y1 - 1995/7

N2 - This paper describes a design for a board-level free-space optical clock distribution system implemented with substrate mode holograms. The design uses an H-tree distribution scheme to balance propagation delays for different clock paths on each board. The H-component provides four diffracted output beams with approx.11% efficiency for each output, and the required laser power for the clock distribution system is calculated. To provide 80 clock fan-out signals for a five-board system, the clock distribution system requires 4.7 mW of laser power with 10μW of received optical power at each node. The misalignment analysis for the free-space optical system is presented and design considerations are given. The factors causing clock skew and timing jitter in the optical clock distribution system are also examined. An experimental system was demonstrated with a 622-MHz clock signal distributed with 36 ps of timing jitter and less than 10 ps of clock skew.

AB - This paper describes a design for a board-level free-space optical clock distribution system implemented with substrate mode holograms. The design uses an H-tree distribution scheme to balance propagation delays for different clock paths on each board. The H-component provides four diffracted output beams with approx.11% efficiency for each output, and the required laser power for the clock distribution system is calculated. To provide 80 clock fan-out signals for a five-board system, the clock distribution system requires 4.7 mW of laser power with 10μW of received optical power at each node. The misalignment analysis for the free-space optical system is presented and design considerations are given. The factors causing clock skew and timing jitter in the optical clock distribution system are also examined. An experimental system was demonstrated with a 622-MHz clock signal distributed with 36 ps of timing jitter and less than 10 ps of clock skew.

UR - http://www.scopus.com/inward/record.url?scp=0029344450&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029344450&partnerID=8YFLogxK

U2 - 10.1109/50.400725

DO - 10.1109/50.400725

M3 - Article

VL - 13

SP - 1566

EP - 1578

JO - Journal of Lightwave Technology

JF - Journal of Lightwave Technology

SN - 0733-8724

IS - 7

ER -