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Title: Tapless and topology agnostic calibration solution for silicon photonic switches

Journal Article · · Optics Express
DOI:https://doi.org/10.1364/OE.26.032662· OSTI ID:1483736
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We leverage the photo-conductance (PC) effect in doped phase-shifter heaters for both controlling and calibrating Mach-Zehnder interferometer (MZI) switch elements. Both the steady-state and the transient response are experimentally characterized, and compact models for the PC current are developed. Utilizing the PC effect, a topology-agnostic algorithm is then outlined. The calibration procedure is experimentally verified against calibration with external photo-detectors using a non-blocking 4×4 Benes switch consisting of six 2×2 MZIs. It is shown that our PC-based approach agrees with the PD-based procedure within less than 2.5% of difference between the obtained calibrated values. Based on the calibrated PC values, all possible routing configurations are measured for extinction ratio (9.92-21.51dB), insertion loss (0.88-4.59dB), and exhibiting performances far below the 7% FEC limit (bit error rate of 3.8 × 10- 3) using 25 Gbps 4-level pulse-amplitude-modulation signals (PAM4).

Research Organization:
Columbia Univ., New York, NY (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Grant/Contract Number:
AR00000843; AR0000843
OSTI ID:
1483736
Alternate ID(s):
OSTI ID: 1613737
Journal Information:
Optics Express, Journal Name: Optics Express Vol. 26 Journal Issue: 25; ISSN 1094-4087
Publisher:
Optical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

References (23)

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Cited By (1)

Monitoring and automatic tuning and stabilization of a 2×2 MZI optical switch for large-scale WDM switch networks journal January 2019

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