Mechanical fabrication of precision microlenses on optical fiber endfaces

Milton, Gareth; Gharbia, Yousef; Katupitiya, Jayantha

doi:10.1117/1.2148428

Cited by 10 publications

(2 citation statements)

References 20 publications

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“…2 Lensed fibers employ endface microlenses realized by laser-shaping 3 or mechanical polishing. 4 MFDs of lensed fibers are limited by the light wavelength in air. At 1.55 µm wavelength, commercially available lensed fibers have minimum attainable MFDs of ~2.5 µm.…”

Section: Introductionmentioning

confidence: 99%

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Cantilever couplers for fiber coupling to silicon photonic integrated circuits

Reano

Sun

2010

SPIE Proceedings

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Cantilever couplers for fiber coupling to silicon photonic integrated circuits are presented. The couplers consist of silicon inverse width tapers embedded within silicon dioxide cantilevers that are deflected out-of plane by residual stress. Coupling efficiencies of 1.6 dB per connection for TE polarization and 2 dB per connection for TM polarization are achieved. Finite difference time domain simulations are conducted to assess coupling loss as a function of cantilever geometry and fiber-to-cantilever misalignment. The cantilever couplers enable high efficiency propagation of light from optical fibers to photonic integrated circuits directly on a chip surface without dicing or cleaving.

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Section: Introductionmentioning

confidence: 99%

“…MFDs of optical fibers can be reduced by exploiting tapered fibers 2 or lensed fibers. 3,4 Tapered fibers may be fabricated by etching silica optical fibers with concentrated hydrofluoric (HF) acid. Constant evaporation during the etching process creates a concentration gradient beneath the liquid surface.…”

Section: Introductionmentioning

confidence: 99%