Noise, Stability, and Linewidth Performance of 10-GHz Optical Frequency Combs Generated from the Nested Cavity Architecture
نویسندگان
چکیده
.................................................................................................................................. iii ACKNOWLEDGMENTS .............................................................................................................. v TABLE OF CONTENTS ............................................................................................................... vi LIST OF FIGURES ..................................................................................................................... viii LIST OF TABLES ....................................................................................................................... xiv LIST OF ACRONYMS/ABBREVIATIONS ............................................................................... xv CHAPTER 1: MOTIVATION .................................................................................................. 1 CHAPTER 2: BACKGROUND AND ARCHITECTURE ...................................................... 5 2.1 Semiconductor gain with external fiber cavity ................................................................ 6 2.2 Supermode suppression .................................................................................................. 10 2.3 Length stabilization ........................................................................................................ 11 2.4 Dispersion compensation ............................................................................................... 14 2.5 Summary of the Nested Cavity Architecture ................................................................. 15 2.6 Previous Work ................................................................................................................ 16 CHAPTER 3: OPTICAL AND RF PERFORMANCE ASSOCIATED WITH CAVITY LENGTH AND INTRACAVITY POWER...................................................................... 17 3.1 Optical performance ....................................................................................................... 17 3.1.1 Linewidth ................................................................................................................ 17 3.1.2 Optical combline stability ....................................................................................... 20 3.2 RF performance: residual phase noise ........................................................................... 22 3.3 Proposed systems ........................................................................................................... 25 vii CHAPTER 4: TRADE-OFFS ASSOCIATED WITH LENGTH, GAIN SATURATION, AND FPE FINESSE ................................................................................................................... 30 4.1 Cavity length and operating bandwidth ......................................................................... 30 4.2 Gain and saturation power.............................................................................................. 31 4.3 Length and free-running stability ................................................................................... 32 CHAPTER 5: NOTABLE RESULTS .................................................................................... 34 5.1 System Performance ....................................................................................................... 34 5.1.1 System 1: SOA, short cavity, 10000 finesse FPE ................................................... 34 5.1.2 System 2: SOA, long cavity, 10000 finesse FPE .................................................... 37 5.1.3 System 3: SCOWA, short cavity, 10000 finesse FPE ............................................ 39 5.1.4 System 4: SCOWA, long cavity, 10000 finesse FPE ............................................. 43 5.1.5 System 5: SCOWA, short cavity, 1000 finesse FPE .............................................. 45 5.2 Discussion ...................................................................................................................... 47 5.2.1 Phase Noise of Photodetected Output ..................................................................... 47 5.2.2 Long term Optical Frequency Stability................................................................... 48 5.2.3 Optical Mode Linewidth ......................................................................................... 49 CHAPTER 6: SUMMARY AND OUTLOOK....................................................................... 55 REFERENCES ............................................................................................................................. 57
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