A surface-emitting laser array with backside guiding holes for passive alignment to parallel optical fibers

1996 ◽  
Vol 8 (4) ◽  
pp. 494-496 ◽  
Author(s):  
K. Matsuda ◽  
T. Yoshida ◽  
T. Kobayashi ◽  
T. Chino
Keyword(s):  
Optical Fibers ◽  
Laser Array ◽  
Surface Emitting Laser ◽  
Passive Alignment

Improvement of Coupling Efficiency for Passive Alignment of Stacked Multifiber Tapes to a Vertical-Cavity Surface-Emitting Laser Array

1997 ◽  
Vol 36 (Part 1, No. 3B) ◽  
pp. 1872-1875 ◽  
Author(s):  
Yasuhiro Kobayashi ◽  
Kenichi Matsuda ◽  
Toyoji Chino ◽  
Takayuki Yoshida ◽  
Kenzo Hatada
Keyword(s):  
Coupling Efficiency ◽  
Cavity Surface ◽  
Laser Array ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Vertical Cavity ◽  
Passive Alignment

High-Power-Density High-Efficiency Bottom-Emitting Vertical-Cavity Surface-Emitting Laser Array

2011 ◽  
Vol 4 (5) ◽  
pp. 052104 ◽  
Author(s):  
Di Liu ◽  
Yongqiang Ning ◽  
Yugang Zeng ◽  
Li Qin ◽  
Yun Liu ◽  
...  
Keyword(s):  
Power Density ◽  
High Power ◽  
High Efficiency ◽  
Cavity Surface ◽  
High Power Density ◽  
Laser Array ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Vertical Cavity

4×15 Gbit/s 850 nm Vertical Cavity Surface Emitting Laser Array

2018 ◽  
Vol 38 (5) ◽  
pp. 0514001
Author(s):  
吕朝晨 Lü Zhaochen ◽  
王青 Wang Qing ◽  
尧舜 Yao Shun ◽  
周广正 Zhou Guangzheng ◽  
于洪岩 Yu Hongyan ◽  
...  
Keyword(s):  
Cavity Surface ◽  
Laser Array ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Vertical Cavity

High Power and High Reliability Vertical-Cavity Surface-Emitting Laser Array

2011 ◽  
Vol 38 (8) ◽  
pp. 0802011
Author(s):  
崔锦江 Cui Jinjiang ◽  
宁永强 Ning Yongqiang ◽  
姜琛昱 Jiang Chenyu ◽  
王帆 Wang Fan ◽  
施燕博 Shi Yanbo ◽  
...  
Keyword(s):  
High Power ◽  
High Reliability ◽  
Cavity Surface ◽  
Laser Array ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Vertical Cavity

Passive Alignment of Optical Fiber in a V-Groove With Low Viscosity Epoxy Flow

2003 ◽  
Author(s):  
Jeffery C. C. Lo ◽  
C. S. Yung ◽  
S. W. Ricky Lee ◽  
Steve H. K. Lee ◽  
J. S. Wu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Processing Time ◽  
Cover Plate ◽  
Manufacturing Cost ◽  
Optoelectronic Packaging ◽  
Low Viscosity ◽  
Epoxy Dispensing ◽  
A New Technique ◽  
Passive Alignment

The alignment of optical fibers is very critical in optoelectronic packaging. A slight offset in any direction may severely affect the performance of the photonic device. Recently, passive alignment of optical fibers has attracted substantial attention due to its lower manufacturing cost and faster processing time when compared with active alignment. For conventional passive alignment, the position of each optical fiber is defined by the geometry of a V-groove. The epoxy is dispensed from the top of the V-groove and another cover plate is usually required to press the fiber against the walls of the V-groove. In the present study, a new technique for epoxy dispensing is developed. Instead of being applied from the top of the V-groove, some low viscosity epoxy is dispensed in a “canal” first. The epoxy fills an adjacent “reservoir” and then flows into the V-groove. Subsequently the epoxy flow runs through the gap between the optical fiber and the V-groove walls. It is observed that the flow of epoxy can align the optical fiber by the surface tension. Once the optical fiber is aligned and the epoxy is cured, more epoxy is applied in a glob-top manner to mechanical enhancement. In this paper, the configuration of the V-groove and associated features, the epoxy dispensing process, and the results of alignment are presented in details.

Parallel Confocal Microscope using Vertical-Cavity Surface Emitting Laser Array

2001 ◽  
Vol 7 (S2) ◽  
pp. 1004-1005
Author(s):  
Motonobu Fujita ◽  
Makoto Naruse ◽  
Masatoshi Ishikawa
Keyword(s):  
Dynamic Range ◽  
Laser System ◽  
Confocal Microscope ◽  
Confocal Laser ◽  
Cavity Surface ◽  
Laser Array ◽  
Parallel Beam ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Vertical Cavity

Here we show a confocal microscope system where a vertical-cavity surface-emitting laser (VCSEL) array is introduced for the parallel probing beams.A VCSEL array is a semiconductor laser device that emits circular beams vertically to the surface of the chip, which can directly be used as confocal laser microscope applications. The VCSEL device itself can be the parallel beam source of the confocal laser system, whereas in conventional Nipkow disc-based system, several lenses are required to form probing beams. Figure 1 shows the basic structure of VCSEL-based confocal microscope systems. Since there is typically no correlation between individual channels of VCSEL, there are no interferences among dense parallel beam arrays. Additionally, in the case of Nipkow disc system, the signal to noise ratio of the detected light is another problem: some of the light from the source laser reflects at the surface of the disc, which eventually could be detected by the sensor as noise. in the proposed system no such problem occurs as shown in Fig. 2(a). in addition, “all” optical beam from VCSEL is used as probing beam whereas most of the power is lost at the disc as compared in Fig. 2(b). in addition, pixel parallel illumination control is also achievable by controlling each channel of the VCSEL so that the dynamic range of the detected signal is maximized.

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