Electrically Driven and Thermally Tunable Integrated Optical Isolators for Silicon Photonics

Huang, Duanni; Pintus, Paolo; Zhang, Chong; Shoji, Yuya; Mizumoto, Tetsuya; Bowers, John E.

doi:10.1109/jstqe.2016.2588778

Cited by 98 publications

(54 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The MO die is bonded onto the pre-patterned SOI waveguides, and the GGGsubstrate is then lapped to reduce the distance between the electro-magnet and the Ce:YIG layer. Eventually, gold metal strips are deposited to create the electromagnets [36].…”

Section: A Heterogeneous Waveguide Cross-sectionmentioning

confidence: 99%

“…On the contrary, the group index does not change significantly with the external magnetic field or with the direction. Since the electrical current induces local heating, the variation of the effective index and the degradation of the Faraday rotation constant, with respect to the temperature, is taken into account as shown in [28], [36]. Moreover, to include wavelength dispersion, the effective index is computed as 1while the simulated propagation loss is about 8.6 dB/cm in all operating conditions.…”

Section: A Heterogeneous Waveguide Cross-sectionmentioning

confidence: 99%

“…This section is focused on optimization of the integrated electromagnet, which is fabricated by depositing a metal microstrip on the thinned GGG substrate. When current flows in the microstrip, a magnetic field is generated and the nonreciprocal effect is induced in the Ce:YIG [36]. Since the magnetic field decays with distance, the GGG substrate is mechanically thinned down to few microns after die bonding.…”

Section: Integrated Electromagnetmentioning

confidence: 99%

“…For example, in Ce:YIG, the inplane field (TM case) required to achieve the maximum NRPS is 50 Oe, while it is forty times stronger for the out-of-place direction (TE case) [35]. As a result, TM optical isolators and circulators are more easily assembled, and, as recently demonstrated, the in-plane saturation field can be efficiently generated using an integrated electromagnet [28], [36]. On the other hand, most semiconductor lasers emit TE polarized light, which indicates the need to develop TE optical isolators and circulators.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Broadband TE Optical Isolators and Circulators in Silicon Photonics Through Ce:YIG Bonding

Pintus

Huang

Morton

et al. 2019

J. Lightwave Technol.

Self Cite

View full text Add to dashboard Cite

Optical isolators and circulators are fundamental building block in photonic integrated circuits to block undesired reflections and routing light according to a prescribed direction. In silicon photonics, heterogeneous integration of magneto-optic garnet bonded on a pre-patterned silicon layer has been demonstrated to be an effective solution for manufacturing optical isolators and circulators for TM polarized light. However, most integrated semiconductor lasers emit TE polarized light, which indicates the need to find a reliable solution for this polarization. In this work, we demonstrated broadband optical isolators and circulators for TE polarized light based on heterogeneous bonding on the silicon photonics platform. To achieve this goal, an integrated adiabatic coupler and a broadband polarization rotator are designed and optimized. The nonreciprocal behavior is induced through an energy-efficient integrated electromagnet with a minimum power consumption of 3 mW. Two isolators/circulators are fabricated with small and large free spectral range, respectively. In the former case, an optical isolation ratio as large as 30 dB is measured at 1555 nm with an insertion loss of 18 dB, while for the broadband circulator an optical isolation larger than 15 dB is guaranteed over more than 14 nm (1.75 THz) for all port-combinations with an insertion loss between 14 dB and 18dB at 1560 nm. Finally, it has been theoretically shown that the insertion loss can be reduced below 6 dB with design and fabrication improvements. To the best of the authors' knowledge, the proposed integrated TE optical circulator is the first experimental demonstration of this device in silicon photonics.

show abstract

Section: A Heterogeneous Waveguide Cross-sectionmentioning

confidence: 99%

Section: A Heterogeneous Waveguide Cross-sectionmentioning

confidence: 99%

Section: Integrated Electromagnetmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Broadband TE Optical Isolators and Circulators in Silicon Photonics Through Ce:YIG Bonding

Pintus

Huang

Morton

et al. 2019

J. Lightwave Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moreover, though narrowband in comparison, the level of nonreciprocity demonstrated here (∼ 30 dB) is competitive with that achievable using integrated magneto-optic [43][44][45][46] or acousto-optic strategies [47,48]. While magneto-optic-based siliconphotonic isolator and circulator technologies are advancing steadily, they require complex fabrication techniques [43][44][45][46]. Acousto-optic strategies are also very promising; however, they have yet to achieve efficiencies necessary to produce optical isolation with low insertion losses [47,48].…”

Section: Discussionmentioning

confidence: 76%

Resonantly enhanced nonreciprocal silicon Brillouin amplifier

Otterstrom

Kittlaus

Gertler

et al. 2019

Optica

View full text Add to dashboard Cite

The ability to amplify light within silicon waveguides is central to the development of highperformance silicon photonic device technologies. To this end, the large optical nonlinearities made possible through stimulated Brillouin scattering offer a promising avenue for power-efficient allsilicon amplifiers, with recent demonstrations producing several dB of net amplification. However, scaling the degree of amplification to technologically compelling levels (> 10 dB), necessary for everything from filtering to small signal detection, remains an important goal. Here, we significantly enhance the Brillouin amplification process by harnessing an inter-modal Brillouin interaction within a multi-spatial-mode silicon racetrack resonator. Using this approach, we demonstrate more than 20 dB of net Brillouin amplification in silicon, advancing state-of-the-art performance by a factor of 30. This degree of amplification is achieved with modest (∼ 15 mW) continuous-wave pump powers and produces low out-of-band noise. Moreover, we show that this same system behaves as a unidirectional amplifier, providing more than 28 dB of optical nonreciprocity without insertion loss in an all-silicon platform. Building on these results, this device concept opens the door to new types of all-silicon injection-locked Brillouin lasers, high-performance photonic filters, and waveguidecompatible distributed optomechanical phenomena.

show abstract

Single‐Photon Nonreciprocity with an Integrated Magneto‐Optical Isolator

Ren

Yan

Feng

et al. 2022

Laser & Photonics Reviews

View full text Add to dashboard Cite

Nonreciprocal photonic devices are essential components of classical optical information processing. It is interesting and important to investigate their feasibility in the quantum world. In this work, a single‐photon non‐reciprocal dynamical transmission experiment has been performed with an on‐chip silicon nitride (SiN)‐based magneto‐optical (MO) isolator. The measured isolation ratio for single photons achieved is 12.33 dB, consistent with the result of the classical test, which proves the functionality of our on‐chip isolator. The quantum coherence of the passing single photons is further verified using high‐visibility quantum interference. This work will promote on‐chip nonreciprocal photonic devices within the integrated quantum circuits and help introduce novel phenomena in quantum information processes.

show abstract

Electrically Driven and Thermally Tunable Integrated Optical Isolators for Silicon Photonics

Cited by 98 publications

References 27 publications

Broadband TE Optical Isolators and Circulators in Silicon Photonics Through Ce:YIG Bonding

Broadband TE Optical Isolators and Circulators in Silicon Photonics Through Ce:YIG Bonding

Resonantly enhanced nonreciprocal silicon Brillouin amplifier

Single‐Photon Nonreciprocity with an Integrated Magneto‐Optical Isolator

Contact Info

Product

Resources

About