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Frequency combs provide a set of equidistant laser lines and find applications in many areas [1]. Microresonator based Kerr frequency combs are a recent scheme for frequency comb generation promising chip-level integration and novel applications such as coherent terabit telecommunications [2, 3]. The underlying principle is nonlinear frequency conversion of a continuous wave pump laser in a high finesse...
Wavelength-stabilized single mode semiconductor lasers are generally required by the dense-wavelength division-multiplexing (DWDM) communication systems. Distributed-feedback (DFB) lasers as the archetypal single mode lasers have achieved great success [1]. Such structures are conventionally fabricated with embedded grating, which requires at least one re-growth complicating the device fabrication...
Wavelength tunable laser diodes are generally regarded as key components for future optical telecommunication systems [1]. Tunable lasers based on DBR gratings are the most typical tunable lasers which satisfy the system requirements. However, fabricating these lasers generally requires both high resolution processing and complex re-growth steps. To reduce the cost, our group has recently demonstrated...
We demonstrate a photonic logic gate for RZ-PolSK signals based on bidirectional FWM in HNLF. Multi-function, such as XOR, ̄AB, ̄AB, XNOR, AND, NOR, half-subtracter, half-adder, comparator and decoder, are simultaneously implemented.
Backside contact solar cells, such as point contact and interdigitated back contact designs, have demonstrated remarkable performance; however, they often require four to six photolithographic steps to fabricate the rear surface. The buried-contact solar cell technology offers a means to substitute photolithographic processing with laser-lithographic processing, which is currently utilized in large-scale...
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