Effect of Ring Resonator Waveguide Loss on SFDR Performance of Highly Linear Optical Modulators Under Suboctave Operation

We present a minimalist design but high functionality micro-ring resonator based optical filter with narrow linewidth and low group delay using a novel design we called LOBOUR for LOoped-Back Over-and UnderCoupled Resonator (LOBOUR). The characteristics of both narrow linewidth and low group delay (low chromatic dispersion) generally do not come together especially when using a single ring resonator. The Cascaded Over-and Under-Coupled Resonator (COUR) design was able to achieve this goal but introduced many practical fabrication issues. Here, we present an alternative design to COUR which uses only one ring resonator and without fabrication and manufacturing issues. It can achieve 50 dB extinction ratio and tens of ps performance. We also present important parameter selection mapping for LOBOUR.

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“…MRR has various applications such as add-drop filter or electro-optic switches or modulators [6][7][8][9]. Fig.…”

Section: Micro-ring Resonator Theorymentioning

confidence: 99%

“…In telecommunications and photonics device applications, MRR has the potential to be the key building block of future VLSI circuits [1]. MRR has been used as electro-optic switches or modulators [6][7][8][9], add-drop filters in wavelength-division multiplexing (WDM) [10,11], bandstop, notch functions [12,13] and interleaver [14][15].…”

Section: Introductionmentioning

confidence: 99%

Minimalist-design, high-functionality, micro-ring resonator-based optical filter with narrow linewidth and low group delay using Looped Back Over- and Under-coupled Resonator (LOBOUR)

Dingel

Cui

2013

SPIE Proceedings

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“…In our previous reports [1][2][3][4][5][6][7][8] we detailed the performance of our highly linear modulator, called IMPACC (Interferometric Modulator with Phase-modulating and Cavity-modulating Components), at both low and high modulation frequencies. In these reports, it is assumed that the power ratio of an input optical signal is 50:50.…”

Section: Introductionmentioning

confidence: 99%

“…As stated in these earlier reports [1][2][3][4][5][6], most linear modulator designs are typicaly limited by stringent manufacturing tolerances, complicated electronics and limited RF bandwidth capabilty. To fulfill large bandwidth performance requirements [9,10], such as in Radio-over-Fiber (RoF) and ultra-dense cable television (CATV), we have introduced a highly linear modulator, IMPACC that has inherent compensation capability for a wide range of modulation frequencies, up to 70 GHz.…”

Section: Introductionmentioning

confidence: 99%

“…In both cases, the modulators are bandwidth limited by the free spectral range of the ring. However, we have already shown [1][2][3][4][5] that IMPACC has the ability to extend the RF modulation bandwidth capability by adjusting the external parameters mentioned above. Likewise, we have shown that IMPACC can also compensate for both the transmission coupling coefficient variation of the ring resonator and the ring resonator waveguide loss [3].…”

Section: Introductionmentioning

confidence: 99%

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Power balancing effect on the performance of IMPACC modulator under critical coupling (CC), over coupling (OC), and under coupling (UC) conditions at high frequency

et al. 2012

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IMPACC (Interferometric Modulator with Phase-modulating and Cavity-modulating Components) is ultralinear optical consisting of a phase modulator and a ring resonator on different arms of a Mach Zehnder interferometer (MZI). External control of the RF power split ratio from an input radio frequency (RF) signal into the two separate arms of the interferometer has been shown to add (1) design flexibility, (2) the ability to achieve high spurious free dynamic range (SFDR) of more than 130 dB, when compared to the single-ring RAMZI (Resonator-assisted MZI) and (3) compensate parameter deviation due to manufacturing imperfection. Our previous reports have assumed that the Optical power split ratio of the input optical signal into the two arm of MZI is balanced with a 50:50 split ratio due to the optical splitter or optical coupler. Here, we investigate three issues. First, we report the negative effect of unbalanced power of the input optical signal on the SFDR performance of IMPACC. Second, we utilize the inherent compensate technique of IMPACC to counteract this effect. Third, the power unbalanced effect is reported at high RF modulation frequency (23GHz) for three different conditions of the ring resonator (RR) namely, critical coupling (CC), over coupling (OC), and under coupling (UC). Lastly, we compare the performance of IMPACC to the single-ring RAMZI with travelingwave electrode design under sub-octave operations.

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Testing High-Resolution Optical Spectrum Analyzers for Characterization of Analog Optical Links with External Modulation

Nebavskii

Starikov

2023

Meas Tech

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Effect of Ring Resonator Waveguide Loss on SFDR Performance of Highly Linear Optical Modulators Under Suboctave Operation

Cited by 25 publications

References 10 publications

Minimalist-design, high-functionality, micro-ring resonator-based optical filter with narrow linewidth and low group delay using Looped Back Over- and Under-coupled Resonator (LOBOUR)

Minimalist-design, high-functionality, micro-ring resonator-based optical filter with narrow linewidth and low group delay using Looped Back Over- and Under-coupled Resonator (LOBOUR)

Power balancing effect on the performance of IMPACC modulator under critical coupling (CC), over coupling (OC), and under coupling (UC) conditions at high frequency

Testing High-Resolution Optical Spectrum Analyzers for Characterization of Analog Optical Links with External Modulation

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