التفاصيل البيبلوغرافية
| العنوان: |
Silicon photonics foundry fabricated, slow-light enhanced, low power thermal phase shifter. |
| المؤلفون: |
Chen, Alexander1 (AUTHOR), Zhang, Meng2 (AUTHOR), Crowley, Daniel2 (AUTHOR), Gangi, Nicholas2 (AUTHOR), Begović, Amir2 (AUTHOR), Huang, Z. Rena1,2 (AUTHOR) huangz3@rpi.edu |
| المصدر: |
Journal of Applied Physics. 10/28/2024, Vol. 136 Issue 16, p1-10. 10p. |
| مصطلحات موضوعية: |
*PHASE shifters, *BRAGG gratings, *INSERTION loss (Telecommunication), *OPTICAL switches, *REDSHIFT |
| مستخلص: |
In this research, we developed a low-power silicon photonics foundry-fabricated slow-light thermal phase shifter (SLTPS) where the slow-light (SL) effect is achieved using an integrated Bragg grating (BG) waveguide. Heating the grating induces a red shift in the transmission spectrum, leading to an increased group index n g during operation, which facilitates a further reduction in the voltage needed for a π phase shift, i.e., V π. Additionally, we investigated a compact Mach–Zehnder Interferometer (MZI) that incorporates the SLTPS in both arms with a phase shifter length of 50 μ m. A detailed theoretical analysis was conducted to address the non-idealities of the SL-MZI due to uneven optical power splitting and unbalanced loss in the two MZI arms. V π and power consumption for a π phase shift (P π) of the SL-MZI were quantified for operation in the slow-light regime, demonstrating a V π of 1.1 V and a P π of 3.63 mW at an operational wavelength near the photonic band edge. The figure of merit P π × τ is commonly used to assess the performance of thermal optical switches. The SL-MZI in this work has achieved a low P π × τ of 5.1 mW μ s with an insertion loss of 4.4 dB, indicating a trade-off with the V π reduction. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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