Ultralow loss ring resonators using 3.5% index-contrast Ge-doped silica waveguides

Bourdon, G.; Alibert, G.; Beguin, A.; Bellman, B.; Guiot, Eric

doi:10.1109/lpt.2003.809925

Cited by 24 publications

(13 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The transmission of a double-bus ring resonator is given in Figure 6a. Bourdon et al [13] had obtained round-trip losses of ~0.06 dB for 500-micron rings, which is much better than our own results for that radius. The measured losses for straight waveguides using the cutback method was higher than that of the rings, on the order of 0.1 dB/cm.…”

Section: High-contrast Silica-on-silicon Devicescontrasting

confidence: 65%

“…However, there is some discussion as to whether there is a point of diminishing returns [12], as smaller waveguides and waveguide modes lead to more laborious coupling to fiber-based networks. For silica waveguides, the realization index contrasts of up to 4% using germanium doping have been previously reported by Bellman and other researchers at Corning [1] [13], although no further reports from these researchers seem to exist after 2004 on this subject. More recently, researchers from Hitachi have developed silica waveguides with a 2.5% index contrast [15][16].…”

Section: High-contrast Silica-on-silicon-a Brief Reviewmentioning

confidence: 84%

See 1 more Smart Citation

High-contrast germanium-doped silica-on-silicon waveguides

Dumais

Callender

Blanchetière

et al. 2012

Photonics North 2012

View full text Add to dashboard Cite

Silica-on-silicon planar lightwave circuits have a number of advantages including stability and low insertion loss to optical fiber networks. Standard GeO 2 doping levels in the waveguide cores lead to a refractive index contrast, ∆n/n, of 0.75%-2%. This range of index contrast requires relatively large bend radii in order to minimize bend losses. This limits the density scaling of these circuits. By using high dopant levels for a ∆n/n of 4%, the bend radius can be decreased to less than 1 mm, from which significant gains in optical circuit density can be obtained. In addition, low-loss ring resonators with free spectral ranges of a few tens of gigahertz can be realized, enabling some additional optical signal processing and filtering on that scale. Optical devices with such high dopant levels have been reported by Bellman et al. in 2004 [1] but to the authors' knowledge, no other experimental work on high-delta GeO 2 -doped waveguides has been reported since. In this paper, we present experimental measurements on high-delta devices including directional couplers, MMI couplers, Mach-Zehnder interferometers, and ring resonators. Device performance, including propagation loss, bend loss, interferometer contrast ratio and birefringence will be presented. We demonstrate that ring resonators with 40 GHz free spectral range can be fabricated for optical signal processing.

show abstract

Section: High-contrast Silica-on-silicon Devicescontrasting

confidence: 65%

Section: High-contrast Silica-on-silicon-a Brief Reviewmentioning

confidence: 84%

High-contrast germanium-doped silica-on-silicon waveguides

Dumais

Callender

Blanchetière

et al. 2012

Photonics North 2012

View full text Add to dashboard Cite

show abstract

“…It has been utilized in various applications including filtering, switching, modulation, wavelength conversion, and sensing [6][7][8][9][10][11][12][13][14][15][16][17][18][19]. The silicon microring resonator with diameter of 40 μm, 500 nm wide waveguides, and 160-nm gaps was fabricated with the technique, as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Simple technique to fabricate microscale and nanoscale silicon waveguide devices

Yao

Feng

Zhou

et al. 2009

Front. Optoelectron. China

View full text Add to dashboard Cite

Fabrication of microscale and nanoscale silicon waveguide devices requires patterning silicon, but until recently, exploitation of the technology has been restricted by the difficulty of forming ever-small features with minimum linewidth fluctuation. A technique was developed for fabricating such devices achieving vertical sidewall profile, smooth sidewall roughness of less than 10 nm, and fine features of 40 nm. Subsequently, silicon microring resonator and silicon-grating coupler were realized using this technique.

show abstract

“…Sensors based on surface plasmon resonances (SPRs) [2], interferometers [3], and resonant cavities [4] are previously reported. Microring resonator sensors, further scaling down the above devices' sizes for cheap high throughput fabrication, have attracted much attention recently and been demonstrated in various material systems [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. The high sensitivity is achieved by the long lifetimes of photons that circle in the ring, which increase the probability of photons interacting with analytes.…”

Section: Introductionmentioning

confidence: 99%

Microring resonator for glucose sensing applications

Yao

et al. 2009

Front. Optoelectron. China

View full text Add to dashboard Cite

Silicon nitride microring resonators were demonstrated as chemical sensors. The microring devices, with diameter of 100 μm, were fabricated using complementary metal oxide semiconductor (CMOS)-compatible technology, and a high Q factor of 15000 was realized with free spectrum range (FSR) of 2 nm. The structures were further packaged to perform as chemical sensors, and their functionality was proved using deionized water (DI water) and ethanol as detecting mediums. Lastly, the packaged chips were used to detect glucose solutions with various concentrations, and a detection capability of refractive index change of 10 -3 refractive index unit (RIU) was obtained.

show abstract

Ultralow loss ring resonators using 3.5% index-contrast Ge-doped silica waveguides

Cited by 24 publications

References 8 publications

High-contrast germanium-doped silica-on-silicon waveguides

High-contrast germanium-doped silica-on-silicon waveguides

Simple technique to fabricate microscale and nanoscale silicon waveguide devices

Microring resonator for glucose sensing applications

Contact Info

Product

Resources

About