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Published on: March 22, 2019
Short wavelength infrared frequency conversion in ultra-compact fiber device
J M Chavez Boggio1, S Zlatanovic, F Gholami
1University of California, San Diego, La Jolla, CA 92093, USA. jmchavez@ece.ucsd.edu
Optics Express
|February 23, 2010
Summary
Millimeter-scale highly nonlinear fiber coils show minimal loss above 3.5mm radius. Smaller coils cause significant loss beyond 2200nm, impacting short-wave infrared applications.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Highly nonlinear optical fibers (HNLF) are crucial for nonlinear optical processes.
- Understanding bending losses in HNLF is essential for device miniaturization and performance.
Purpose of the Study:
- To experimentally investigate the linear and nonlinear characteristics of millimeter-scale HNLF devices.
- To analyze the impact of coil diameter on macro-bending and micro-bending losses.
- To demonstrate a tunable short-wave infrared source using a compact HNLF module.
Main Methods:
- Experimental characterization of HNLF coils with varying radii (≥3.5 mm and <3.5 mm).
- Spectral analysis of radiation loss in the 2000-2400 nm range.
- Construction and testing of a tunable short-wave infrared (SWIR) source.
Main Results:
- Macro-bending induced radiation loss is negligible for coils with radius >3.5 mm up to 2400 nm.
- For smaller coil diameters (<3.5 mm), macro-bending losses exceed micro-bending losses beyond 2200 nm.
- An efficient nonlinear conversion from 1.26 to 2.2 µm was achieved using a coin-sized fiber module.
Conclusions:
- Coil diameter is a critical parameter for managing bending losses in HNLF devices.
- Miniaturized HNLF modules can enable efficient SWIR light generation.
- These findings are relevant for developing compact nonlinear optical devices.
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