All-Optical Shift Register Using Polarization Bistable VCSEL Array
All-Optical Shift Register Using Polarization Bistable VCSEL Array
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DOI：
10.1109/lpt.2016.2582212
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发表时间：
2016-06
影响因子：
2.6
通讯作者：
T. Katayama;Daisuke Hayashi;H. Kawaguchi
中科院分区：
文献类型：
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作者：
T. Katayama;Daisuke Hayashi;H. Kawaguchi
研究了1.55μm偏振双稳垂直腔面发射激光器(VCSEL)的全光移位寄存操作。VCSEL阵列由室温下以单一纵模和横模振荡的VCSEL组成。通过调节每个垂直腔面发射激光器的驱动电流来调节激光波长。阵列中的VCSEL通过注入正交极化的SET-RESET输入脉冲表现出偏振触发器操作。通过通过偏振器和光门将VCSEL输出光注入同一阵列中的另一VCSEL，第二VCSEL也根据第一VCSEL的偏振状态表现出偏振触发器操作。使用阵列中的两个相邻VCSEL成功地演示了移位寄存器操作。偏振开关所需的光功率通常低于VCSEL的输出功率。因此，这种移位寄存器操作是在没有光学放大器的情况下实现的。
We investigated all-optical shift register operations using 1.55-μm polarization bistable vertical-cavity surface-emitting lasers (VCSELs) formed in an array. The VCSEL array consisted of VCSELs that oscillated with single longitudinal and transverse modes at room temperature. The lasing wavelengths were tuned by adjusting the driving currents of each VCSEL. A VCSEL in the array exhibited polarization flip-flop operation by injection of the orthogonally polarized set-reset input pulses. By injection of the VCSEL output light into another VCSEL in the same array through a polarizer and an optical gate, the second VCSEL also exhibited polarization flip-flop operation according to the polarization state of the first VCSEL. The shift register operation has been successfully demonstrated using two adjacent VCSELs in the array. The optical power needed for polarization switching is usually lower than the VCSEL output power. Thus, this shift register operation was achieved without optical amplifiers.