Fabrication of a Multimode Interference Device in a Low-Loss Flat-Fiber Platform Using Physical Micromachining Technique

A physical micromachining technique is demonstrated in a low-loss flat-fiber substrate to fabricate a multimode interference (MMI) device. The flat-fiber substrate is a low-index-contrast material; however, by making use of two physically micromachined trenches, lateral confinement is achieved provi...

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Bibliographic Details
Published in:Journal of lightwave technology 2012-09, Vol.30 (17), p.2870-2875
Main Authors: Ambran, S., Holmes, C., Gates, J. C., Webb, A. S., Carpenter, L. G., Adikan, F. R. M., Smith, P. G. R., Sahu, J. K.
Format: Article
Language:English
Subjects:
Air trenches
Applied sciences
Electronics
Exact sciences and technology
Fabrication
flat fiber
Indexes
Loss measurement
Materials
Microelectronic fabrication (materials and surfaces technology)
multimode interference (MMI)
Optical fiber devices
Optical fibers
Propagation losses
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
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Description
Summary:A physical micromachining technique is demonstrated in a low-loss flat-fiber substrate to fabricate a multimode interference (MMI) device. The flat-fiber substrate is a low-index-contrast material; however, by making use of two physically micromachined trenches, lateral confinement is achieved providing high index contrast for the MMI region. A 1 × 3 MMI device exhibiting 1.89 dB of excess loss has been demonstrated.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2012.2199465