Eylem Seç
Actively Stabilized Microring Switches Using Silicon Defect-state Photodetectors for Optical Interconnects
Başlık:
Actively Stabilized Microring Switches Using Silicon Defect-state Photodetectors for Optical Interconnects
Yazar:
Li, Yu, author.
ISBN:
9780438130777
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (202 pages)
Genel Not:
Source: Masters Abstracts International, Volume: 57-06M(E).
Advisors: Andrew Wing-On Poon.
Özet:
Silicon photonics has gained significant advancement over the past two decades. In this thesis, we experimentally study silicon sub-bandgap photodetectors in the telecommunications wavelengths of 1550 nm in silicon waveguides and microring resonators using surface-state absorption (SSA) and defect-state absorption (DSA). We integrate such photodetectors into silicon microring resonators as a photomonitor to actively stabilize the microring resonances for emergent optical switch fabrics applications in optical interconnects for datacenter applications.
For characterizing SSA, we propose and demonstrate a modulated photocurrent-transmission spectroscopy method to measure the linear SSA coefficient from the photocurrent extracted from a PIN-diode-integrated silicon waveguide, while using the nonlinear two-photon-absorption coefficient measured from the modulated transmission spectrum as a reference. Our experiments reveal a responsivity of ~1.4 mA/W/mm from an air-clad waveguide photodetector upon -1 V, indicating an SSA coefficient of 0.013 ~ 0.017 mm-1.
We have designed and integrated PIN photodetectors in silicon microrings. The microring is integrated with an air-clad photodetector and an electrically isolated silica-clad photodetector as a control. Our experiments reveal a responsivity of 0.9 ~ 2.9 mA/W/mm upon -1 V from the air-clad photodetector, and of only 0.13 ~ 0.19 mA/W/mm from the control photodetectors. Likewise, we have integrated ion-implantation-induced DSA-based PIN photodetectors in microrings. Our experiments reveal a responsivity of 7.0 ~ 65.0 mA/W/mm upon -1 V using B-, P-, and Ar-ion implantations.
In order to obtain actively stabilized silicon microrings, we utilize the SSA/DSA-based photodetectors to monitor the spectral alignment between the microring resonance and a carrier wavelength. Feedback-controlled integrated electro-optic and thermo-optic tuners, along with a threshold-detection/slope-detection method are used for actively stabilizing the microring. We demonstrate a reduced transmission power variation of < 2.5 dB over a 14°C on-stage temperature modulation. We observe open eye-diagrams with a 30Gb/s data transmission through an actively stabilized microring array.
Notlar:
School code: 1223
Konu Başlığı:
Tüzel Kişi Ek Girişi:
Mevcut:*
Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(696776.1) | 696776-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
On Order
Liste seç
Bunu varsayılan liste yap.
Öğeler başarıyla eklendi
Öğeler eklenirken hata oldu. Lütfen tekrar deneyiniz.
:
Select An Item
Data usage warning: You will receive one text message for each title you selected.
Standard text messaging rates apply.