Monolithically integrated L-band PICs and transceiver modules with 6λ x 200 Gbps (1.2 Tbps) for C + L band communication systems.

We present monolithically integrated multi-channel coherent L-band transmitter (Tx) and receiver (Rx) photonic integrated circuits (PICs) on InP substrates. The L-band PICs are able to provide post-forward error correction (FEC), error-free operation for dual-polarization (DP) 16-QAM coherent transmission at 33 Gbaud. These transceivers operate at 200 Gbps per channel and support 1.

Real-time superchannel transmission over 10,500 km submarine link at 4.66 b/s/Hz spectral efficiency.

We show real-time measurement of error-free superchannel transmission over more than 10,500 km of large-area fiber at a spectral efficiency of 4.66 b/s/Hz, utilizing subcarrier based signal processing optimized at 5.4 GBd.

Extended C-band tunable multi-channel InP-based coherent receiver PICs.

Fully integrated monolithic, multi-channel InP-based coherent receiver PICs and transceiver modules with extended C-band tunability are described. These PICs operate at 33 and 44 Gbaud per channel under dual polarization (DP) 16-QAM modulation. Fourteen-channel monolithic InP receiver PICs show integration and data rate scaling capability to operate at 44 Gbaud under DP 16-QAM modulation for combined 4.

1.12 Tb/s superchannel coherent PM-QPSK InP transmitter photonic integrated circuit (PIC).

In this work, a 10-wavelength, polarization-multiplexed, monolithically integrated InP coherent QPSK transmitter PIC is demonstrated to operate at 112 Gb/sec per wavelength and total chip superchannel bandwidth of 1.12 Tb/s. This demonstration suggests that increasing data capacity to multi-Tb/s per chip is possible and likely in the future.

Diffusion-bonded stacks of periodically poled lithium niobate.

We constructed diffusion-bonded stacks of periodically poled lithium niobate (PPLN). Such crystals combine the advantages of planar processing used to make PPLN wafers with the power-handling capability of large apertures. We demonstrated an optical parametric oscillator that uses a 3-mm-thick diffusion-bonded stack consisting of three 1-mm-thick PPLN crystals.