Arrayed waveguide collimators for integrating free-space optics on polymeric waveguide devices

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Array-type optical devices are important for wavelength-division multiplexing optical communication system to achieve small footprint, mass production, and reliability. For fabricating transmitter module in an array configuration, it is difficult to achieve a passive alignment of isolator, collimating lens, and laser diode. To facilitate array isolator integration, a waveguide collimator is proposed in this work by using a low-contrast, large-core polymer waveguide. The diffraction of a guided mode propagating through a free-space region is suppressed by enlarging the guided mode. The fiber coupling loss due to the enlarged mode was overcome by incorporating an adiabatic taper structure. The excess loss of waveguide collimator including the loss through a 400-mu m free-propagation region was less than 1.0 dB.
Publisher
OPTICAL SOC AMER
Issue Date
2014-10
Language
English
Article Type
Article
Keywords

PLANAR LIGHTWAVE CIRCUITS; SILICA-BASED PLC; CONVERTER

Citation

OPTICS EXPRESS, v.22, no.20, pp.23801 - 23806

ISSN
1094-4087
DOI
10.1364/OE.22.023801
URI
http://hdl.handle.net/10203/194496
Appears in Collection
EE-Journal Papers(저널논문)
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