Study of scalability for micromachined free-space optical cross-connects

Sergio O. Martinez; Bernard Courtois

doi:10.1117/12.426907

16 May 2001 Study of scalability for micromachined free-space optical cross-connects

Proceedings Volume 4290, Optoelectronic Integrated Circuits and Packaging V; (2001) https://doi.org/10.1117/12.426907
Event: Symposium on Integrated Optics, 2001, San Jose, CA, United States

Abstract

One of the main promising applications of micro-machining in All-Optical-Networks (AON) is represented by free-space electro-mechanical Optical Cross Connects (OXCs); free-space components show lower attenuation and lower cross-talk than concurrent technologies based on wave-guides. Although micromachined electro-mechanical OXCs have been recently introduced into the market, further commercialization of devices with increased input/output port-count will certainly require decreasing insertion losses by proper design techniques of both, the electromechanical devices and the system packaging. Among different proposed micromachined architectures, one suitable for small- to medium-size cross-connects id defined by a two-dimensional array of tw-state microreflectors where signal routing occurs in a single plane parallel to the substrate; in this architecture, signals come from and go into Single-Mode Fibers (SMF) collimated by GRIN lenses. This paper discusses different losses mechanisms in micromachined free- space mirror-based OXCs, including both fiber/mirror misalignments on insertion losses. A third section analyzes the effects of imperfect micro-mirrors on insertion losses including finite mirror-size, orientation error, reflectivity and scattering. Finally, conclusions on the required fiber-packaging accuracy and the scalability of micromachined free-space OXCs are presented.

Citation Download Citation

Sergio O. Martinez and Bernard Courtois "Study of scalability for micromachined free-space optical cross-connects", Proc. SPIE 4290, Optoelectronic Integrated Circuits and Packaging V, (16 May 2001); https://doi.org/10.1117/12.426907

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KEYWORDS

Mirrors

Single mode fibers

GRIN lenses

Collimators

Free space optics

Signal attenuation

Gaussian beams

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