Phase error corrected 4-bit true time delay module using a cascaded 2 × 2 polymer waveguide switch array

Wang, Xiaolong; Howley, Brie; Chen, Maggie Y.; Chen, Ray T.

doi:10.1364/ao.46.000379

Cited by 29 publications

(8 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The switches and the delay waveguides together form a 4 bit RTTDL. The maximum power consumption is 143 mW, and the switching time is less than 3 ms [101,102] . A silica waveguide platform was also quite suitable for reconfigurable true delay lines for optical beam forming applications.…”

Section: Multi-path Switchable Delay Linesmentioning

confidence: 99%

Integrated optical delay lines: a review and perspective [Invited]

Zhou

Wang

et al. 2018

Chin. Opt. Lett.

View full text Add to dashboard Cite

Optical delay lines (ODLs) are one of the key enabling components in photonic integrated circuits and systems. They are widely used in time-division multiplexing, optical signal synchronization and buffering, microwave signal processing, beam forming and steering, etc. The development of integrated photonics pushes forward the miniaturization of ODLs, offering improved performances in terms of stability, tuning speed, and power consumption. The integrated ODLs can be implemented using various structures, such as single or coupled resonators, gratings, photonic crystals, multi-path switchable structures, and recirculating loop structures. The delay tuning in ODLs is enabled by either changing the group refractive index of the waveguide or changing the length of the optical path. This paper reviews the recent development of integrated ODLs with a focus on their abundant applications and flexible implementations. The challenges and potentials of each type of ODLs are pointed out.

show abstract

Section: Multi-path Switchable Delay Linesmentioning

confidence: 99%

Integrated optical delay lines: a review and perspective [Invited]

Zhou

Wang

et al. 2018

Chin. Opt. Lett.

View full text Add to dashboard Cite

show abstract

“…The most direct and easiest approach for tunable group delay is changing the optical physical distance [9]. For instance, typical schemes are dependent on the selection of long or short delay paths in each stage by Mach-Zehnder interferometer switches [10][11][12]. Recently, a novel scheme of hexagonal integrated waveguide mesh configurations was proposed for the implementation of compact discrete and continuous optical true-time delay lines [13].…”

Section: Introductionmentioning

confidence: 99%

Tunable optical delay line based on integrated grating-assisted contradirectional couplers

Wang¹,

Zhao²,

Ding³

et al. 2018

Photon. Res.

View full text Add to dashboard Cite

Tunable optical delay lines are one of the key building blocks in optical communication and microwave systems. In this work, tunable optical delay lines based on integrated grating-assisted contradirectional couplers are proposed and experimentally demonstrated. The device performance is comprehensively improved in terms of parameter optimization, apodization analysis, and electrode design. Tunable group delay lines of 50 ps at different wavelengths within the bandwidth of 12 nm are realized with a grating length of 1.8 mm. Under thermal tuning mode, the actual delay tuning range is around 20 ps at 7.2 V voltage. At last, a new scheme adopting an ultra-compact reflector for doubling group delay is proposed and verified, achieving a large group delay line of 400 ps and a large dispersion value up to 5.5 × 10 6 ps∕nm · km within bandwidth of 12 nm. Under thermal tuning mode, the actual delay tuning range is around 100 ps at 8 V voltage.

show abstract

“…Polymer-based passive and active photonic devices have been extensively used in various applications, including communication networks [1][2][3][4][5][6][7][8][9][10][11][12], optical backplanes and interchip interconnects [13][14][15][16][17][18][19][20][21], sensors [22][23][24][25][26][27][28][29][30][31][32], etc. Low-cost and high-efficiency packaging of these devices is crucial in order to enable an economically viable market.…”

Section: Introductionmentioning

confidence: 99%

Quasi-vertical tapers for polymer-waveguide-based interboard optical interconnects

et al. 2015

Self Cite

View full text Add to dashboard Cite

A mode transformer based on the quasi-vertical taper is designed to enable high coupling efficiency for interboardlevel optical interconnects involving single-mode polymer waveguides and standard single-mode fibers. A triangular region fabricated above the waveguide is adopted to adiabatically transform the mode from the fiber into the polymer waveguide. The effects of the geometrical parameters of the taper, including width, height, tip width, etc., on the coupling efficiency are numerically investigated. Based on this, a quasi-vertical taper for the polymer rib waveguide system is designed, fabricated, and characterized. Coupling losses of 1.79 0.30 and 2.23 0.31 dB per coupler for the quasi-TM and quasi-TE mode, respectively, are measured across the optical communication C and L bands (1535 to 1610 nm). Low-cost packaging, leading to widespread utilization of polymeric photonic devices, is envisioned for optical interconnect applications.

show abstract

Phase error corrected 4-bit true time delay module using a cascaded 2 × 2 polymer waveguide switch array

Cited by 29 publications

References 11 publications

Integrated optical delay lines: a review and perspective [Invited]

Integrated optical delay lines: a review and perspective [Invited]

Tunable optical delay line based on integrated grating-assisted contradirectional couplers

Quasi-vertical tapers for polymer-waveguide-based interboard optical interconnects

Contact Info

Product

Resources

About