ABSTRACT The first monolithically integrated InGaAsP/InP active-passive 8 × 8 cross-connect is de... more ABSTRACT The first monolithically integrated InGaAsP/InP active-passive 8 × 8 cross-connect is designed, fabricated and demonstrated. The selection functionalities in the space and wavelength domain are implemented simultaneously on a single chip. Eight broadband inputs connect to an array of 1 × 8 broadband space selection switches. Wavelength domain selection is subsequently performed with an array of eight 8 × 8 gated cyclic routers. The on-chip fan-outs and fan-ins allow the integration of 136 semiconductor optical amplifier gates and eight cyclic routers within a chip area of 14.6 × 6.7 mm2 . Circuit connectivity is evaluated for the full range of paths with optical and electronic connections for 84% of the paths in this first prototype. Good spectral uniformity for the cyclic routers and loss compensation from the semiconductor optical amplifier gates allow for operation across a broad spectral range. Data routing studies are performed for a representative range of paths to show optical signal to noise ratios of greater than 30 dB/0.1 nm. Dynamically reconfigurable routing is also demonstrated for four simultaneously routed wavelengths. Switch rise and fall times are measured to be 3.8 and 3.2 ns respectively.
2013 18th OptoElectronics and Communications Conference held jointly with 2013 International Conference on Photonics in Switching
ABSTRACT We present 10Gbps PRBS data routing through all sixteen paths of a 4×4 fifth-order reson... more ABSTRACT We present 10Gbps PRBS data routing through all sixteen paths of a 4×4 fifth-order resonator switch matrix with low optical power penalty. Thermal crosstalk between switch elements is shown to be low.
ABSTRACT The first 40 Gbit/s multipath data routing is demonstrated in a two-dimensional switch m... more ABSTRACT The first 40 Gbit/s multipath data routing is demonstrated in a two-dimensional switch matrix composed of high-order resonant optical switches. Broadband connectivity with on-state bandwidths exceeding 100 GHz, chip losses below 9.0 dB and signal extinction above 20 dB is achieved through the four paths on the diagonal of the 4 ?? 4 matrix. 40 Gbit/s data routing is demonstrated through three of these paths with power penalties below 0.5 dB for each path.
We demonstrate for the first time WDM multi-path routing through a monolithically integrated InP/... more We demonstrate for the first time WDM multi-path routing through a monolithically integrated InP/InGaAsP 8 × 8 space and wavelength selective cross-connect. Data channels are dynamically routed from four input ports to the same output port with excellent OSNR from 27.0 to 31.1 dB. Representative data paths are evaluated in terms of optical power penalty. Data routing experiments are performed using round-robin scheduling with nanosecond time-scale switching times.
10th International Conference on Group IV Photonics, 2013
ABSTRACT We demonstrate an optical crossbar with fifth-order resonant switches. Repeatable and &a... more ABSTRACT We demonstrate an optical crossbar with fifth-order resonant switches. Repeatable and >100GHz bandwidth operation is measured for two rows of eight switches. “On” and “Off” state losses are measured to be 2.2dB and 0.9dB respectively.
ABSTRACT We demonstrate the first monolithic 8-input, 8-output WDM-compliant cross-connect with n... more ABSTRACT We demonstrate the first monolithic 8-input, 8-output WDM-compliant cross-connect with nanosecond programmable path provisioning between each input and output. Multiple data channels are simultaneously demonstrated for all eight outputs with penalty as low as 1.7dB.
We demonstrate for the first time WDM multi-path routing through a monolithically integrated InP/... more We demonstrate for the first time WDM multi-path routing through a monolithically integrated InP/InGaAsP 8 × 8 space and wavelength selective cross-connect. Data channels are dynamically routed from four input ports to the same output port with excellent OSNR from 27.0 to 31.1 dB. Representative data paths are evaluated in terms of optical power penalty. Data routing experiments are performed using round-robin scheduling with nanosecond time-scale switching times.
ABSTRACT Dynamic multi-path routing is studied for the first time in a cross-point switch matrix ... more ABSTRACT Dynamic multi-path routing is studied for the first time in a cross-point switch matrix comprising fifth order resonant switch elements. Connections are made between eight inputs and two outputs with on-chip losses of up to 9.5dB and 35μs guard times between the configured paths.
A control plane is implemented to allow the first (to our knowledge) demonstration of scheduling ... more A control plane is implemented to allow the first (to our knowledge) demonstration of scheduling and power leveling in a monolithically integrated 8 × 8 switch for multi-path and multi-wavelength routing on a data packet timescale. Automated control and path assessment is enabled under dynamically reconfigured wavelengthand-space routing. Eight data connections from eight inputs to each output are established within 8 μs by using a round robin scheduler. Fast automated bit-error-rate measurements under a range of decision thresholds are performed for each of the established connections. A comprehensive analysis on the path performance is performed for the whole device. Error-free (<10 −9 ) operation under dynamic wavelength-and-space routing are demonstrated for all the electrically connected paths. The first investigation on the impact of varied switch loads from unicast to multicast to broadcast on device performance is also performed.
ABSTRACT We present 10Gbps PRBS data routing through all sixteen paths of a 4×4 fifth-order reson... more ABSTRACT We present 10Gbps PRBS data routing through all sixteen paths of a 4×4 fifth-order resonator switch matrix with low optical power penalty. Thermal crosstalk between switch elements is shown to be low.
We demonstrate the first monolithic 8-input, 8-output WDM-compliant cross-connect with nanosecond... more We demonstrate the first monolithic 8-input, 8-output WDM-compliant cross-connect with nanosecond programmable path provisioning between each input and output. Multiple data channels are simultaneously demonstrated for all eight outputs with penalty as low as 1.7dB.
The first monolithically integrated InGaAsP/InP active-passive 8×8 cross-connect is designed, fab... more The first monolithically integrated InGaAsP/InP active-passive 8×8 cross-connect is designed, fabricated and demonstrated. The selection functionalities in the space and wavelength domain are implemented simultaneously on a single chip. Eight broadband inputs connect to an array of 1×8 broadband space selection switches. Wavelength domain selection is subsequently performed with an array of eight 8×8 gated cyclic routers. The on-chip fan-outs and fan-ins allow the integration of 136 semiconductor optical amplifier gates and 8 cyclic routers within a chip area of 14.6×6.7mm 2 .
ABSTRACT The first monolithically integrated InGaAsP/InP active-passive 8 × 8 cross-connect is de... more ABSTRACT The first monolithically integrated InGaAsP/InP active-passive 8 × 8 cross-connect is designed, fabricated and demonstrated. The selection functionalities in the space and wavelength domain are implemented simultaneously on a single chip. Eight broadband inputs connect to an array of 1 × 8 broadband space selection switches. Wavelength domain selection is subsequently performed with an array of eight 8 × 8 gated cyclic routers. The on-chip fan-outs and fan-ins allow the integration of 136 semiconductor optical amplifier gates and eight cyclic routers within a chip area of 14.6 × 6.7 mm2 . Circuit connectivity is evaluated for the full range of paths with optical and electronic connections for 84% of the paths in this first prototype. Good spectral uniformity for the cyclic routers and loss compensation from the semiconductor optical amplifier gates allow for operation across a broad spectral range. Data routing studies are performed for a representative range of paths to show optical signal to noise ratios of greater than 30 dB/0.1 nm. Dynamically reconfigurable routing is also demonstrated for four simultaneously routed wavelengths. Switch rise and fall times are measured to be 3.8 and 3.2 ns respectively.
2013 18th OptoElectronics and Communications Conference held jointly with 2013 International Conference on Photonics in Switching
ABSTRACT We present 10Gbps PRBS data routing through all sixteen paths of a 4×4 fifth-order reson... more ABSTRACT We present 10Gbps PRBS data routing through all sixteen paths of a 4×4 fifth-order resonator switch matrix with low optical power penalty. Thermal crosstalk between switch elements is shown to be low.
ABSTRACT The first 40 Gbit/s multipath data routing is demonstrated in a two-dimensional switch m... more ABSTRACT The first 40 Gbit/s multipath data routing is demonstrated in a two-dimensional switch matrix composed of high-order resonant optical switches. Broadband connectivity with on-state bandwidths exceeding 100 GHz, chip losses below 9.0 dB and signal extinction above 20 dB is achieved through the four paths on the diagonal of the 4 ?? 4 matrix. 40 Gbit/s data routing is demonstrated through three of these paths with power penalties below 0.5 dB for each path.
We demonstrate for the first time WDM multi-path routing through a monolithically integrated InP/... more We demonstrate for the first time WDM multi-path routing through a monolithically integrated InP/InGaAsP 8 × 8 space and wavelength selective cross-connect. Data channels are dynamically routed from four input ports to the same output port with excellent OSNR from 27.0 to 31.1 dB. Representative data paths are evaluated in terms of optical power penalty. Data routing experiments are performed using round-robin scheduling with nanosecond time-scale switching times.
10th International Conference on Group IV Photonics, 2013
ABSTRACT We demonstrate an optical crossbar with fifth-order resonant switches. Repeatable and &a... more ABSTRACT We demonstrate an optical crossbar with fifth-order resonant switches. Repeatable and &gt;100GHz bandwidth operation is measured for two rows of eight switches. “On” and “Off” state losses are measured to be 2.2dB and 0.9dB respectively.
ABSTRACT We demonstrate the first monolithic 8-input, 8-output WDM-compliant cross-connect with n... more ABSTRACT We demonstrate the first monolithic 8-input, 8-output WDM-compliant cross-connect with nanosecond programmable path provisioning between each input and output. Multiple data channels are simultaneously demonstrated for all eight outputs with penalty as low as 1.7dB.
We demonstrate for the first time WDM multi-path routing through a monolithically integrated InP/... more We demonstrate for the first time WDM multi-path routing through a monolithically integrated InP/InGaAsP 8 × 8 space and wavelength selective cross-connect. Data channels are dynamically routed from four input ports to the same output port with excellent OSNR from 27.0 to 31.1 dB. Representative data paths are evaluated in terms of optical power penalty. Data routing experiments are performed using round-robin scheduling with nanosecond time-scale switching times.
ABSTRACT Dynamic multi-path routing is studied for the first time in a cross-point switch matrix ... more ABSTRACT Dynamic multi-path routing is studied for the first time in a cross-point switch matrix comprising fifth order resonant switch elements. Connections are made between eight inputs and two outputs with on-chip losses of up to 9.5dB and 35μs guard times between the configured paths.
A control plane is implemented to allow the first (to our knowledge) demonstration of scheduling ... more A control plane is implemented to allow the first (to our knowledge) demonstration of scheduling and power leveling in a monolithically integrated 8 × 8 switch for multi-path and multi-wavelength routing on a data packet timescale. Automated control and path assessment is enabled under dynamically reconfigured wavelengthand-space routing. Eight data connections from eight inputs to each output are established within 8 μs by using a round robin scheduler. Fast automated bit-error-rate measurements under a range of decision thresholds are performed for each of the established connections. A comprehensive analysis on the path performance is performed for the whole device. Error-free (<10 −9 ) operation under dynamic wavelength-and-space routing are demonstrated for all the electrically connected paths. The first investigation on the impact of varied switch loads from unicast to multicast to broadcast on device performance is also performed.
ABSTRACT We present 10Gbps PRBS data routing through all sixteen paths of a 4×4 fifth-order reson... more ABSTRACT We present 10Gbps PRBS data routing through all sixteen paths of a 4×4 fifth-order resonator switch matrix with low optical power penalty. Thermal crosstalk between switch elements is shown to be low.
We demonstrate the first monolithic 8-input, 8-output WDM-compliant cross-connect with nanosecond... more We demonstrate the first monolithic 8-input, 8-output WDM-compliant cross-connect with nanosecond programmable path provisioning between each input and output. Multiple data channels are simultaneously demonstrated for all eight outputs with penalty as low as 1.7dB.
The first monolithically integrated InGaAsP/InP active-passive 8×8 cross-connect is designed, fab... more The first monolithically integrated InGaAsP/InP active-passive 8×8 cross-connect is designed, fabricated and demonstrated. The selection functionalities in the space and wavelength domain are implemented simultaneously on a single chip. Eight broadband inputs connect to an array of 1×8 broadband space selection switches. Wavelength domain selection is subsequently performed with an array of eight 8×8 gated cyclic routers. The on-chip fan-outs and fan-ins allow the integration of 136 semiconductor optical amplifier gates and 8 cyclic routers within a chip area of 14.6×6.7mm 2 .
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Papers by Abhinav Rohit