Multimode dynamics of a monolithically integrated, tunable, bidirectional, gain switched optical comb source

Odhran Liston; John McCarthy; Diarmuid O’Sullivan; Mohamad Dernaika; Frank Peters; Bryan Kelleher

doi:10.1364/OE.547360

Multimode dynamics of a monolithically integrated, tunable, bidirectional, gain switched optical comb source

Odhran Liston
, John McCarthy
, Diarmuid O’Sullivan
, Mohamad Dernaika
, Frank Peters
, Bryan Kelleher

Research output: Contribution to journal › Article › peer-review

Abstract

A three-sectioned, bidirectionally coupled, tunable, optical comb source is presented. The photonic integrated circuit (PIC) consists of a gain section, a slotted mirror section and a Fabry-Perot (FP) section. Optical frequency combs (OFCs) are produced by gain switching the FP section via a high power radio frequency (RF) signal. An investigation into the effect of the RF frequency on the quality of the OFC is performed. Multimode behavior is observed with OFCs produced in multiple modes as well as the overall degradation in the quality of the combs in each mode. A minimal extension multimode rate equation model is presented that reproduces the experimental results extremely well using experimentally determined values for numerical parameters. The appearance of multimode behavior is interpreted as relating to the modified relaxation oscillation frequency of the bidirectionally coupled system.

Original language	English
Pages (from-to)	2449-2460
Number of pages	12
Journal	Optics Express
Volume	33
Issue number	2
DOIs	https://doi.org/10.1364/OE.547360
Publication status	Published - 27 Jan 2025

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title = "Multimode dynamics of a monolithically integrated, tunable, bidirectional, gain switched optical comb source",

abstract = "A three-sectioned, bidirectionally coupled, tunable, optical comb source is presented. The photonic integrated circuit (PIC) consists of a gain section, a slotted mirror section and a Fabry-Perot (FP) section. Optical frequency combs (OFCs) are produced by gain switching the FP section via a high power radio frequency (RF) signal. An investigation into the effect of the RF frequency on the quality of the OFC is performed. Multimode behavior is observed with OFCs produced in multiple modes as well as the overall degradation in the quality of the combs in each mode. A minimal extension multimode rate equation model is presented that reproduces the experimental results extremely well using experimentally determined values for numerical parameters. The appearance of multimode behavior is interpreted as relating to the modified relaxation oscillation frequency of the bidirectionally coupled system.",

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T1 - Multimode dynamics of a monolithically integrated, tunable, bidirectional, gain switched optical comb source

AU - Liston, Odhran

AU - McCarthy, John

AU - O’Sullivan, Diarmuid

AU - Dernaika, Mohamad

AU - Peters, Frank

AU - Kelleher, Bryan

PY - 2025/1/27

Y1 - 2025/1/27

N2 - A three-sectioned, bidirectionally coupled, tunable, optical comb source is presented. The photonic integrated circuit (PIC) consists of a gain section, a slotted mirror section and a Fabry-Perot (FP) section. Optical frequency combs (OFCs) are produced by gain switching the FP section via a high power radio frequency (RF) signal. An investigation into the effect of the RF frequency on the quality of the OFC is performed. Multimode behavior is observed with OFCs produced in multiple modes as well as the overall degradation in the quality of the combs in each mode. A minimal extension multimode rate equation model is presented that reproduces the experimental results extremely well using experimentally determined values for numerical parameters. The appearance of multimode behavior is interpreted as relating to the modified relaxation oscillation frequency of the bidirectionally coupled system.

AB - A three-sectioned, bidirectionally coupled, tunable, optical comb source is presented. The photonic integrated circuit (PIC) consists of a gain section, a slotted mirror section and a Fabry-Perot (FP) section. Optical frequency combs (OFCs) are produced by gain switching the FP section via a high power radio frequency (RF) signal. An investigation into the effect of the RF frequency on the quality of the OFC is performed. Multimode behavior is observed with OFCs produced in multiple modes as well as the overall degradation in the quality of the combs in each mode. A minimal extension multimode rate equation model is presented that reproduces the experimental results extremely well using experimentally determined values for numerical parameters. The appearance of multimode behavior is interpreted as relating to the modified relaxation oscillation frequency of the bidirectionally coupled system.

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JF - Optics Express

IS - 2

ER -

Multimode dynamics of a monolithically integrated, tunable, bidirectional, gain switched optical comb source

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