Andrew Dentai

Large-scale photonic integrated circuits

We present an overview of Infineras current generation of 100 Gb/s transmitter and receiver PICs as well as results from the next-generation 500 Gb/s PM-QPSK PICs.

Acceleration of gain recovery in semiconductor optical amplifiers by optical injection near transparency wavelength

By using optical injection near the transparency wavelength of semiconductor optical amplifiers, we show experimentally that both the saturation output power and the gain recovery can be greatly improved. By injecting 80 mW of pump power, we observe a 3-dB increase in saturation output power. For 73 mW of pump power, we find a reduction in gain recovery time from over 200 ps down to below 40 ps, while maintaining 14 dB of fiber-to-fiber gain at 1555-nm wavelength.

InP Photonic Integrated Circuits

InP is an ideal integration platform for optical generation, switching, and detection components operating in the range of 1.3-1.6 m wavelength, which is preferred for data transmission in the most prevalent silica-based optical fiber. We review the current state of the art in advanced InP photonic ICs.

Current Status of Large-Scale InP Photonic Integrated Circuits

In this paper, the current state of the art for large-scale InP photonic integrated circuits (PICs) is reviewed with a focus on the devices and technologies that are driving the commercial scaling of highly integrated devices. Specifically, the performance, reliability, and manufacturability of commercial 100-Gb/s dense wavelength-division-multiplexed transmitter and receiver PICs are reviewed as well as next- and future-generation devices (500 Gb/s and beyond). The large-scale PIC enables significant reductions in cost, packaging complexity, size, fiber coupling, and power consumption which have enabled benefits at the component and system level.

Large-Scale InP Transmitter PICs for PM-DQPSK Fiber Transmission Systems

We report here the first demonstration of a large-scale monolithically integrated InP-based 10-channel 45.6-Gb/s per channel transmitter photonic integrated circuit employing polarization-multiplexed differential quadrature phase-shift keying modulation format.

Large-scale photonic integrated circuits for long-haul transmission and switching

Feature Issue on Nanoscale Integrated Photonics for Optical Networks Dense wavelength division multiplexed (DWDM) large-scale, single-chip transmitter and receiver photonic integrated circuits (PICs), each capable of operating at 100 Gbits/s, have been deployed in the field since the end of 2004. These highly integrated InP chips have significantly changed the economics of long-haul optical transport networks. First, a review of the ten-channel, 100 Gbits/s PIC is presented. Then two extensions of the technology are demonstrated; first is wide temperature, coolerless operation of the 100 Gbits/s PIC, and second is a single integrated chip with 40 channels operating at 40 Gbits/s, capable of an aggregate data rate of 1.6 Tbits/s.

10 Channel, 100Gbit/s per channel, dual polarization, coherent QPSK, monolithic InP receiver photonic integrated circuit

A 10 channel, dual polarization, monolithically integrated, coherent QPSK receiver on InP operating at 100Gbit/s per channel is demonstrated.

Multi-channel coherent PM-QPSK InP transmitter photonic integrated circuit (PIC) operating at 112 Gb/s per wavelength

A 10-wavelength, polarization-multiplexed, monolithically integrated InP transmitter PIC is demonstrated for the first time to operate at 112 Gb/s per wavelength with a coherent receiver PIC.

10 Channel, 45.6 Gb/s per Channel, Polarization-Multiplexed DQPSK, InP Receiver Photonic Integrated Circuit

We demonstrate a 10 wavelength, 200 GHz spaced, monolithically integrated, polarization-multiplexed, InP differential quadrature phase shift keying receiver operating at 45.6 Gb/s per wavelength. The receiver is based on a novel technique for polarization demodulation and phase tracking that does not require any external components.

Terabit/s class InP photonic integrated circuits

In this paper, we review recent developments in the area of terabit/s?class monolithically integrated, transmitter and receiver photonic integrated circuits for the implementation of coherent, polarization-multiplexed, quadrature phase shift keying and higher order modulation formats.