Abstract

Due to their highly stable timing characteristics, optical frequency combs have become instrumental in applications ranging from spectroscopy to ultra-wideband optical interconnects, high-speed signal processing, and exoplanet search. In the past few years, there has been a necessity for frequency combs to become more compact, robust to environmental disturbances, and extremely energy efficient, where photonic integration shows a clear pathway to bring optical frequency combs to satellites, airships, drones, cars, and even smartphones. Therefore, the development of chip-scale optical frequency combs has become a topic of high interest in the optics community. This dissertation reviews the work made in the field of chip-scale optical frequency combs using optically injection locked semiconductor mode-locked lasers. First it shows the efforts in the design, characterization and calibration of several semiconductor mode-locked laser architectures on an InP-based platform. Then two separate efforts to obtain a self-referenced optical frequency comb are described. The first one based on an InP-based MLL-PIC that is enhanced via COEO multi-tone injection locking, and then amplified and broadened to an octave using pulse picking and a combination of bulk and integrated nonlinear optics. The second approach is based on the synchronization of two lasers via regenerative harmonic injection locking, one with a repetition rate in the microwave regime (10s of GHz) and another one in the THz domain (100s of GHz), first utilizing an electro-optic modulated comb and then an integrated SiN microresonator-based Kerr frequency comb. This manuscript envisions future work to achieve an optical to RF link using optical injection locking architectures with long-term stabilization and the outlook of using this technique in conjunction with octave-spanning microresonator-based Kerr combs to achieve a self-referenced chip-scale optical frequency comb.

Notes

If this is your thesis or dissertation, and want to learn how to access it or for more information about readership statistics, contact us at STARS@ucf.edu.

Graduation Date

2021

Semester

Spring

Advisor

Delfyett, Peter

Degree

Doctor of Philosophy (Ph.D.)

College

College of Optics and Photonics

Department

Optics and Photonics

Degree Program

Optics and Photonics

Format

application/pdf

Identifier

CFE0008918; DP0026197

Language

English

Release Date

November 2021

Length of Campus-only Access

None

Access Status

Doctoral Dissertation (Campus-only Access)

Share

COinS