Comparison of stray-light and diffraction-caused crosstalk in free-space optical interconnects

Feng-Chuan F Tsai; Novak S. Petrovic; Aleksandar D. Rakic

doi:10.1117/12.522874

25 March 2004 Comparison of stray-light and diffraction-caused crosstalk in free-space optical interconnects

Feng-Chuan F Tsai, Novak S. Petrovic, Aleksandar D. Rakic

Proceedings Volume 5277, Photonics: Design, Technology, and Packaging; (2004) https://doi.org/10.1117/12.522874
Event: Microelectronics, MEMS, and Nanotechnology, 2003, Perth, Australia

Abstract

In this paper we investigate for the first time the effect of the crosstalk introduced due to laser beam imaging in a free-space optical interconnect (FSOI) system. Due to the overfill of the transmitter microlens array by the vertical cavity surface emitting laser (VCSEL) beam, one part of the signal is imaged by the adjacent microlens to another channel, possibly far from the intended one. Even though this causes increase in interchannel and intersymbol interference, to our knowledge this issue has been neglected so far. The numerical simulation has been performed using a combination of exact ray tracing and the beam propagation methods. The results show that some characteristics of stray-light crosstalk are similar to that of diffraction-caused crosstalk, where it is strongly dependent on the fill factor of the microlens, array pitch, and the channel density of the system. Despite the similarities, the stray-light crosstalk does not affect by an increase in the interconnection distance. As simulation models for optical crosstalk are numerically intensive, we propose here a crosstalk behavioral model as a useful tool for optimization and design of FSOIs. We show that this simple model compares favorably with the numerical simulation models.

Citation Download Citation

Feng-Chuan F Tsai, Novak S. Petrovic, and Aleksandar D. Rakic "Comparison of stray-light and diffraction-caused crosstalk in free-space optical interconnects", Proc. SPIE 5277, Photonics: Design, Technology, and Packaging, (25 March 2004); https://doi.org/10.1117/12.522874

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Microlens

Microlens array

Transmitters

Vertical cavity surface emitting lasers

Optical simulations

Optical interconnects

Receivers

Show All Keywords

Keywords/Phrases

Search In:

Publication Years