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Title: Active phase correction of high resolution silicon photonic arrayed waveguide gratings

Abstract

Arrayed waveguide gratings provide flexible spectral filtering functionality for integrated photonic applications. Achieving narrow channel spacing requires long optical path lengths which can greatly increase the footprint of devices. High index contrast waveguides, such as those fabricated in silicon-on-insulator wafers, allow tight waveguide bends which can be used to create much more compact designs. Both the long optical path lengths and the high index contrast contribute to significant optical phase error as light propagates through the device. Thus, silicon photonic arrayed waveguide gratings require active or passive phase correction following fabrication. We present the design and fabrication of compact silicon photonic arrayed waveguide gratings with channel spacings of 50, 10 and 1 GHz. The largest device, with 11 channels of 1 GHz spacing, has a footprint of only 1.1 cm 2. Using integrated thermo-optic phase shifters, the phase error is actively corrected. We present two methods of phase error correction and demonstrate state-of-the-art cross-talk performance for high index contrast arrayed waveguide gratings. As a demonstration of possible applications, we perform RF channelization with 1 GHz resolution. In addition, we generate unique spectral filters by applying non-zero phase offsets calculated by the Gerchberg Saxton algorithm.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1356215
Report Number(s):
SAND2017-2604J
Journal ID: ISSN 1094-4087; OPEXFF; 651611
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Optics Express
Additional Journal Information:
Journal Volume: 25; Journal Issue: 6; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America (OSA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 97 MATHEMATICS AND COMPUTING; 42 ENGINEERING

Citation Formats

Gehl, M., Trotter, D., Starbuck, A., Pomerene, A., Lentine, A. L., and DeRose, C. Active phase correction of high resolution silicon photonic arrayed waveguide gratings. United States: N. p., 2017. Web. doi:10.1364/OE.25.006320.
Gehl, M., Trotter, D., Starbuck, A., Pomerene, A., Lentine, A. L., & DeRose, C. Active phase correction of high resolution silicon photonic arrayed waveguide gratings. United States. doi:10.1364/OE.25.006320.
Gehl, M., Trotter, D., Starbuck, A., Pomerene, A., Lentine, A. L., and DeRose, C. Fri . "Active phase correction of high resolution silicon photonic arrayed waveguide gratings". United States. doi:10.1364/OE.25.006320. https://www.osti.gov/servlets/purl/1356215.
@article{osti_1356215,
title = {Active phase correction of high resolution silicon photonic arrayed waveguide gratings},
author = {Gehl, M. and Trotter, D. and Starbuck, A. and Pomerene, A. and Lentine, A. L. and DeRose, C.},
abstractNote = {Arrayed waveguide gratings provide flexible spectral filtering functionality for integrated photonic applications. Achieving narrow channel spacing requires long optical path lengths which can greatly increase the footprint of devices. High index contrast waveguides, such as those fabricated in silicon-on-insulator wafers, allow tight waveguide bends which can be used to create much more compact designs. Both the long optical path lengths and the high index contrast contribute to significant optical phase error as light propagates through the device. Thus, silicon photonic arrayed waveguide gratings require active or passive phase correction following fabrication. We present the design and fabrication of compact silicon photonic arrayed waveguide gratings with channel spacings of 50, 10 and 1 GHz. The largest device, with 11 channels of 1 GHz spacing, has a footprint of only 1.1 cm2. Using integrated thermo-optic phase shifters, the phase error is actively corrected. We present two methods of phase error correction and demonstrate state-of-the-art cross-talk performance for high index contrast arrayed waveguide gratings. As a demonstration of possible applications, we perform RF channelization with 1 GHz resolution. In addition, we generate unique spectral filters by applying non-zero phase offsets calculated by the Gerchberg Saxton algorithm.},
doi = {10.1364/OE.25.006320},
journal = {Optics Express},
number = 6,
volume = 25,
place = {United States},
year = {Fri Mar 10 00:00:00 EST 2017},
month = {Fri Mar 10 00:00:00 EST 2017}
}

Journal Article:
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Cited by: 2 works
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