Patent
Coherent and pulse amplitude modulation in a pluggable optical transceiver
Salam Elahmadi,Siraj Nour Elahmadi,George H. BuAbbud,Gabriel E. Cardona,Qingzhong Cai,Qing Zhang,Barry Coles +6 more
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TLDR
In this article, an apparatus adapted to operate a pluggable optical transceiver in a plurality of modulation schemes includes core circuitry adapted to interface with a host device, wherein the host device is adapted to support the POS receiver.Abstract:
An apparatus adapted to operate a pluggable optical transceiver in a plurality of modulation schemes includes core circuitry adapted to interface with a host device, wherein the host device is adapted to support the pluggable optical transceiver; direct detection modulation circuitry communicatively coupled to the core circuitry; coherent modulation circuitry communicatively coupled to the core circuitry; and selection circuitry adapted to operate one of the direct detection modulation circuitry and the coherent modulation circuitry based on a selection depending on an application of the pluggable optical transceiver.read more
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Patent
Optical transceiver for 100 Gigabit/second transmission
TL;DR: In this article, an optical transmitter for converting and coupling an information-containing electrical signal with an optical fiber having an electrical input for coupling with an external electrical cable or information system device having a plurality of parallel data lines, a modulator for converting between an information containing electrical signal on each data line and a multi-level digital pulse amplitude modulated signal corresponding to the binary electrical signal; and a signal timing circuit coupled to said modulators for aligning the data signal to a predetermined clock signal.
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