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Bottom-emitting, 980-nm vertical-cavity surface-emitting lasers flip-chip bonded on copper- and indium- plated heat spreaders were fabricated and characterized. Flip-chip bonding bottom-emitting VCSELs reduced the devices' thermal resistance by 35% and increased the bias current density at which the maximum output optical power achieved by 19%, which increased the maximum output optical power achieved...
Optical signal regeneration including Re-amplification and Re-shaping regenerator has been revealed as the needs in optical communications system particularly in Wavelength Division Multiplexing (WDM) system. Based on this, the idea of modeling the WDM regenerator has been proposed. 2R regenerator based on High Nonlinear Dispersion Imbalanced Loop Mirror (HN-DILM) constructed by Dispersion Shift Fiber...
This research was centered on an enhanced bidirectionally-pumped remote L-band erbium-doped fiber amplifier (EDFA) module. The amplifier was backward-pumped using 1455 nm Raman laser while the SRS generated in the delivery line pumped the remote EDFA in the forward direction. Gain values around 12 dB and 9 dB were measured for input signal of −30 and 0 dBm respectively. Excellent gain flatness was...
We report a gain improvement of L-band double-pass erbium-doped fiber amplifier (EDFA) by incorporating chirped fiber Bragg grating (CFBG). CFBG has been used to compensate the effect of single mode fiber (SMF) dispersion, reflect the amplified signal back into the gain medium for double pass amplification and block the residual 1480 nm pump power and the recycled forward amplified spontaneous emission...
We demonstrate a multiwavelength Brillouin Erbium fiber laser with double channel spacing operating at room temperature using a hybrid linear-ring cavity. 7 simultaneous lines with 0.175nm line spacing using both a 100mW pump at 980nm and a 4dBm Brillouin pump are achieved by circulating the odd-order Stokes signals in a 7km long single mode fiber based sub-ring cavity, allowing for the formation...
In this paper, thermal characterization of a high power infrared emitter as a function of input current is reported. Thermal behavior of the high power infrared emitter is investigated by employing thermal transient method. For measurement, input current is varied from 0.2A to 1.0A at constant ambient temperature of 27°C under still-air environment. It is found that junction-to-interface thermal resistance,...
This paper provides an overview of the rationale behind the significant interest in polymer-based on-board optical links together with a brief review of recently reported work addressing certain challenges in this field. Polymer-based optical links have garnered considerable research attention due to their important functional attributes and compelling cost-benefit advantages in on-board optoelectronic...
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