Mode Suppression in Injection Locked Multi-Mode and Single-Mode Lasers for Optical Demultiplexing

Optical injection locking has been demonstrated as an effective filter for optical communications. These optical filters have advantages over conventional passive filters, as they can be used on active material, allowing them to be monolithically integrated onto an optical circuit. We present an exp...

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Bibliographic Details
Published inPhotonics Vol. 6; no. 1; p. 27
Main Authors Shortiss, Kevin, Shayesteh, Maryam, Cotter, William, Perrott, Alison, Dernaika, Mohamad, Peters, Frank
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 08.03.2019
Subjects
Circuits
Demultiplexers
Demultiplexing
Electric fields
Filters
Frequency locking
Injection
injection locking
Lasers
optical comb
Optical communication
optical filter
Optical filters
Q factors
semiconductor laser
Wave division multiplexing
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Summary:Optical injection locking has been demonstrated as an effective filter for optical communications. These optical filters have advantages over conventional passive filters, as they can be used on active material, allowing them to be monolithically integrated onto an optical circuit. We present an experimental and theoretical study of the optical suppression in injection locked Fabry–Pérot and slotted Fabry–Pérot lasers. We consider both single frequency and optical comb injection. Our model is then used to demonstrate that improving the Q factor of devices increases the suppression obtained when injecting optical combs. We show that increasing the Q factor while fixing the device pump rate relative to threshold causes the locking range of these demultiplexers to asymptotically approach a constant value.
ISSN:2304-6732
2304-6732
DOI:10.3390/photonics6010027