Monolithic 6 × 6 transmitter-router with simultaneous sub-nanosecond port and wavelength switching

Guo, Jia; Fan, Zhuping; Zhou, Siyang; Liu, Biaohan; Meng, Jianjun; Zhu, Jihong; Li, Yayun; Li, Qiaoli; Zhao, Jiasheng; He, Jiangang

doi:10.1364/ol.456675

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…In previous reports [3], [17], etched diffraction grating routers (EDGR) have been used for integrated wavelength routing. A 4×800 GHz transmitter-router PIC has been demonstrated by monolithically integrating a tunable VCL array with an EDGR for distributed routing network [3].…”

Section: Design and Fabricationmentioning

confidence: 99%

“…The measured output power was only about 1.5 mW, and the OSNR was about 30 dB. Another recent work [17] on transmitter-routers is based on a 6×800 GHz intracavity EDGR, which can achieve simultaneous wavelength and port switching but with reduced flexibility compared to the tunable laser approach.…”

Section: Design and Fabricationmentioning

confidence: 99%

“…Then, we designed and fabricated a monolithic 8×8 transmitter-router PIC based on VCL and a cyclic arrayed waveguide grating router (AWGR) with channel spacing of 400 GHz on the same InGaAlAs/InP multi-quantum well (MQW) platform. Quantum-well intermixing (QWI) technique was used for active-passive integration with advantages of low interface reflection, fabrication simplicity and cost effectiveness [3], [13], [16]- [17].…”

Section: Introductionmentioning

confidence: 99%

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Monolithically Integrated 8 × 8 Transmitter-Router Based on Tunable V-Cavity Laser Array and Cyclic Arrayed Waveguide Grating Router

et al. 2022

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A monolithic 8×8 transmitter-router chip fabricated on InGaAlAs-InP multi-quantum well wafer for distributed wavelength routing network in the O-band with a channel spacing of 400 GHz is experimentally demonstrated. A tunable V-cavity laser (VCL) array, a cyclic-arrayed waveguide grating router (AWGR) and a semiconductor amplifier (SOA) array are integrated using the quantum-well intermixing (QWI) technique for its fabrication simplicity and cost effectiveness. A 200 GHz-spaced compact-size VCL is demonstrated with a 27 nm tuning range and a side-mode suppression ratio (SMSR) around 40 dB using a single-electrode controlled tuning. The chip output power is 24.6 mw. Measurement results of the transmitter-router chip show that all 64 input-output combinations have cyclic response spectra. After passing through the SOA with 80 mA bias current, an output power of about 9.6 mW and optical signal-to-noise ratio (OSNR) up to 39 dB have been measured. The demonstrated transmitter-router chip is fabricated on the same quantum well structure without requiring multiple epitaxial growth and complex grating fabrication. The characteristics of multi-wavelength and multi-port transmissions enable the distributed optical routing networks with flexible bandwidth allocation, which can find wide application in datacenters and high-performance computers.

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Section: Design and Fabricationmentioning

confidence: 99%

Section: Design and Fabricationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Monolithically Integrated 8 × 8 Transmitter-Router Based on Tunable V-Cavity Laser Array and Cyclic Arrayed Waveguide Grating Router

et al. 2022

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Direct Optical Convolution Computing Based on Arrayed Waveguide Grating Router

Cheng,

Li,

Dai

et al. 2024

Laser & Photonics Reviews

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Optical convolution computing is gaining traction owing to its inherent parallelism, multi‐dimensional processing, and energy efficiency. To handle input dimensions of N, conventional implementations necessitate N2 optical elements, such as Mach–Zehnder interferometers or micro‐ring resonators, to process multiply‐accumulate (MAC) operations, limiting scalability and resulting in elevated power consumption. Here, a direct convolution computing method based on wavelength routing, utilizing the unique sliding property of an arrayed waveguide grating router (AWGR) to perform the sliding window operation of the convolution in the wavelength–space domains is proposed. With two input vectors directly loaded onto two modulator arrays, the convolution result is instantaneously produced at a photodetector array. The entire convolution computation is executed within a single clock cycle without the need for preprocessing or decomposition into elementary MAC operations. The number of active elements is minimal, only needed for input/output. The proposed optical convolution unit has striking advantages of high scalability, high speed, and processing simplicity compared to those based on optical matrix‐vector multipliers. In the first experimental demonstration, a remarkable classification accuracy of up to 98.2% in handwritten digit recognition tasks using a LeNet‐5 neural network is achieved.

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First experimental demonstration of highly scalable and reconfigurable optical convolution computing based on wavelength routing

Cheng,

Li,

Dai

et al. 2024

Optical Design and Testing XIV

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Monolithic 6 × 6 transmitter-router with simultaneous sub-nanosecond port and wavelength switching

Cited by 4 publications

References 12 publications

Monolithically Integrated 8 × 8 Transmitter-Router Based on Tunable V-Cavity Laser Array and Cyclic Arrayed Waveguide Grating Router

Monolithically Integrated 8 × 8 Transmitter-Router Based on Tunable V-Cavity Laser Array and Cyclic Arrayed Waveguide Grating Router

Direct Optical Convolution Computing Based on Arrayed Waveguide Grating Router

First experimental demonstration of highly scalable and reconfigurable optical convolution computing based on wavelength routing

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