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Title: High speed ultra-broadband amplitude modulators with ultrahigh extinction >65 dB

Abstract

Here, we experimentally demonstrate ultrahigh extinction ratio (>65 dB) amplitude modulators (AMs) that can be electrically tuned to operate across a broad spectral range of 160 nm from 1480 – 1640 nm and 95 nm from 1280 – 1375 nm. Our on-chip AMs employ one extra coupler compared with conventional Mach-Zehnder interferometers (MZI), thus form a cascaded MZI (CMZI) structure. Either directional or adiabatic couplers are used to compose the CMZI AMs and experimental comparisons are made between these two different structures. Furthermore, we investigate the performance of CMZI AMs under extreme conditions such as using 95:5 split ratio couplers and unbalanced waveguide losses. Electro-optic phase shifters are also integrated in the CMZI AMs for high-speed operation. Finally, we investigate the output optical phase when the amplitude is modulated, which provides us valuable information when both amplitude and phase are to be controlled. This demonstration not only paves the road to applications such as quantum information processing that requires high extinction ratio AMs but also significantly alleviates the tight fabrication tolerance needed for large-scale integrated photonics.

Authors:
 [1];  [1];  [1];  [1];  [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); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1360934
Report Number(s):
SAND-2017-5006J
Journal ID: ISSN 1094-4087; OPEXFF; 653226
Grant/Contract Number:  
AC04-94AL85000; NA0003525
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Optics Express
Additional Journal Information:
Journal Volume: 25; Journal Issue: 10; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America (OSA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Liu, S., Cai, H., DeRose, C. T., Davids, P., Pomerene, A., Starbuck, A. L., Trotter, D. C., Camacho, R., Urayama, J., and Lentine, A. High speed ultra-broadband amplitude modulators with ultrahigh extinction >65 dB. United States: N. p., 2017. Web. doi:10.1364/oe.25.011254.
Liu, S., Cai, H., DeRose, C. T., Davids, P., Pomerene, A., Starbuck, A. L., Trotter, D. C., Camacho, R., Urayama, J., & Lentine, A. High speed ultra-broadband amplitude modulators with ultrahigh extinction >65 dB. United States. doi:10.1364/oe.25.011254.
Liu, S., Cai, H., DeRose, C. T., Davids, P., Pomerene, A., Starbuck, A. L., Trotter, D. C., Camacho, R., Urayama, J., and Lentine, A. Thu . "High speed ultra-broadband amplitude modulators with ultrahigh extinction >65 dB". United States. doi:10.1364/oe.25.011254. https://www.osti.gov/servlets/purl/1360934.
@article{osti_1360934,
title = {High speed ultra-broadband amplitude modulators with ultrahigh extinction >65 dB},
author = {Liu, S. and Cai, H. and DeRose, C. T. and Davids, P. and Pomerene, A. and Starbuck, A. L. and Trotter, D. C. and Camacho, R. and Urayama, J. and Lentine, A.},
abstractNote = {Here, we experimentally demonstrate ultrahigh extinction ratio (>65 dB) amplitude modulators (AMs) that can be electrically tuned to operate across a broad spectral range of 160 nm from 1480 – 1640 nm and 95 nm from 1280 – 1375 nm. Our on-chip AMs employ one extra coupler compared with conventional Mach-Zehnder interferometers (MZI), thus form a cascaded MZI (CMZI) structure. Either directional or adiabatic couplers are used to compose the CMZI AMs and experimental comparisons are made between these two different structures. Furthermore, we investigate the performance of CMZI AMs under extreme conditions such as using 95:5 split ratio couplers and unbalanced waveguide losses. Electro-optic phase shifters are also integrated in the CMZI AMs for high-speed operation. Finally, we investigate the output optical phase when the amplitude is modulated, which provides us valuable information when both amplitude and phase are to be controlled. This demonstration not only paves the road to applications such as quantum information processing that requires high extinction ratio AMs but also significantly alleviates the tight fabrication tolerance needed for large-scale integrated photonics.},
doi = {10.1364/oe.25.011254},
journal = {Optics Express},
number = 10,
volume = 25,
place = {United States},
year = {Thu May 04 00:00:00 EDT 2017},
month = {Thu May 04 00:00:00 EDT 2017}
}

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