Consideration of spectroscopic measurements with broadband Fourier domain mode-locked laser with two semiconductor optical amplifiers at ~1550 nm
Consideration of spectroscopic measurements with broadband Fourier domain mode-locked laser with two semiconductor optical amplifiers at ~1550 nm
复制标题
考虑使用带两个半导体光放大器的宽带傅里叶域锁模激光器在 ~1550 nm 处进行光谱测量
DOI：
10.1117/1.oe.62.3.036101
复制
发表时间：
2023
影响因子：
1.3
通讯作者：
Shinoda Yukitaka
中科院分区：
文献类型：
--
作者：
Yamaguchi Tatsuya;Nakamoto Akira;Shinoda Yukitaka
在这项研究中，开发了一个实验系统，使用宽带波长扫描激光器在~1550nm处进行快速宽带光谱测量。宽带波长扫描激光器采用傅里叶域锁模 (FDML) 来实现 50.7 kHz 的高速扫描速率。 ~1550nm 的 FDML 激光器遇到扫描带宽受到半导体光放大器 (SOA) 放大波长范围限制的问题。为了实现>100nm的扫描带宽，所提出的宽带FDML激光器并行地结合了具有不同放大波长范围的SOA。因此，它将中心波长 1544 nm 处的扫描带宽扩展至 120 nm。实验系统采用宽带FDML激光器并引入参考和补偿光学器件。这些光学器件可以补偿光输出强度波动和激光器波长偏移的影响，从而提高测量稳定性。此外，该实验系统还展示了波长范围为 1500 至 1580 nm 的快速透射光谱测量。
In this study, an experimental system was developed using a broadband wavelength-swept laser for fast and broadband spectroscopic measurements at ∼1550 nm. The broadband wavelength-swept laser employed Fourier domain mode-locking (FDML) to realize a high-speed sweep rate of 50.7 kHz. FDML lasers at ∼1550 nm experience a problem of the sweep bandwidth being limited by the amplification wavelength range of the semiconductor optical amplifier (SOA). To realize a sweep bandwidth >100 nm, the proposed broadband FDML laser incorporated SOAs with different amplification wavelength ranges in parallel. Consequently, it expanded the sweep bandwidth to 120 nm at a center wavelength of 1544 nm. The experimental system employed the broadband FDML laser and introduced reference and compensation optics. These optics can compensate for the effects of fluctuations in optical output intensity and wavelength shift in the laser to improve measurement stability. Moreover, the experimental system demonstrated fast transmission spectrum measurements with a wavelength range of 1500 to 1580 nm.