Karagodsky Vadim, Pesala Bala, Chase Christopher, Hofmann Werner, Koyama Fumio, Chang-Hasnain Connie J
Department of Electrical Engineering and Computer Science, University of California at Berkeley, Cory Hall, Berkeley, CA 94720, USA.
Opt Express. 2010 Jan 18;18(2):694-9. doi: 10.1364/OE.18.000694.
We propose a novel design for multi-wavelength arrays of vertical cavity surface-emitting lasers (VCSELs) using high-contrast gratings (HCGs) as top mirrors. A range of VCSEL cavity wavelengths in excess of 100 nm is predicted by modifying only the period and duty-cycle of the high-contrast gratings, while leaving the epitaxial layer thickness unchanged. VCSEL arrays fabricated with this novel design can easily accommodate the entire Er-doped fiber amplifier bandwidth with emission wavelengths defined solely by lithography with no restrictions in physical layout. Further, the entire process is identical to that of solitary VCSELs, facilitating cost-effective manufacturing.
我们提出了一种新颖的垂直腔面发射激光器（VCSEL）多波长阵列设计，该设计使用高对比度光栅（HCG）作为顶部反射镜。通过仅修改高对比度光栅的周期和占空比，预计可实现超过100 nm的一系列VCSEL腔波长，而外延层厚度保持不变。采用这种新颖设计制造的VCSEL阵列能够轻松适应整个掺铒光纤放大器带宽，其发射波长仅由光刻定义，对物理布局没有限制。此外，整个过程与单个VCSEL的过程相同，便于实现具有成本效益的制造。
