{"id":4579,"date":"2015-06-05T04:49:29","date_gmt":"2015-06-05T04:49:29","guid":{"rendered":"http:\/\/revoscience.com\/en\/?p=4579"},"modified":"2015-06-05T04:49:29","modified_gmt":"2015-06-05T04:49:29","slug":"new-heterogeneous-wavelength-tunable-laser-diode-for-high-frequency-efficiency","status":"publish","type":"post","link":"https:\/\/www.revoscience.com\/en\/new-heterogeneous-wavelength-tunable-laser-diode-for-high-frequency-efficiency\/","title":{"rendered":"New Heterogeneous Wavelength Tunable Laser Diode for High Frequency Efficiency"},"content":{"rendered":"

Researchers at Tohoku University and the National Institute of Information and Communications Technology (NICT) in Japan, have developed a novel ultra-compact heterogeneous wavelength tunable laser diode.<\/strong><\/em><\/span><\/p>\n

\"A<\/a>
A novel heterogeneous wavelength tunable laser diode consisting of QD technology and silicon photonics.
Copyright : Tomohiro Kita<\/figcaption><\/figure>\n

Researchers at Tohoku University and the National Institute of Information and Communications Technology (NICT) in Japan, have developed a novel ultra-compact heterogeneous wavelength tunable laser diode. The heterogeneous laser diode was realized through a combination of silicon photonics and quantum-dot (QD) technology, and demonstrates a wide-range tuning-operation.\u00a0<\/span>

The researchers presented their work at a Conference on Lasers and Electro-Optics (CLEO) in San Jose, California, on May 13. The related paper was also published in Applied Physics Express vol. 8, 062701 on May 20.<\/span>

Recent high-capacity optical transmission systems are based on wavelength-division multiplexing (WDM) systems with dense frequency channels. The frequency channels in C-band (conventional band: 1530- 1565 nm) are overcrowded and the frequency utilization efficiency is saturated in such WDM systems. On the other hand, extensive and unexploited frequency resources are buried in near-infra-red wavelengths (1000- 1300 nm). Additionally, photonic devices are required to have smaller footprints and lower power consumption in short-reach data transmissions. The compact and low power consumption wavelength tunable laser diode is a key device to tap the undeveloped frequency bands for higher capacity data transmission systems.\u00a0<\/span>

The heterogeneous wavelength tunable laser diode, consisting of the QD and the silicon photonics, is a promising candidate to realize such a compact and broad-band light source. This is because the QD has large optical gains of around 1000 – 1300 nm wavelength, and silicon photonics provide a promising platform for highly integrated photonics devices – so a novel wavelength-tunable laser diode, combining QD and silicon photonics technologies, was proposed.\u00a0<\/span>

The cooperative research group led by Tomohiro Kita and Naokatsu Yamamoto demonstrated a wide range tuning operation of around 1250 nm wavelength with an ultra-small device footprint. The obtained frequency tuning-range of 8.8 THz is a world record for the category of QD and silicon photonics heterogeneous wavelength tunable laser diodes. It is expected that the fusing of the QD technology and silicon photonics will provide a breakthrough for the development of an effective and compact light source.<\/span>

This research was partially supported by the Strategic Information and Communications R&D Promotion Program (SCOPE) of Japan\u2019s Ministry of Internal Affairs and Communications.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Researchers at Tohoku University and the National Institute of Information and Communications Technology (NICT) in Japan, have developed a novel ultra-compact heterogeneous wavelength tunable laser diode. Researchers at Tohoku University and the National Institute of Information and Communications Technology (NICT) in Japan, have developed a novel ultra-compact heterogeneous wavelength tunable laser diode. The heterogeneous laser […]<\/p>\n","protected":false},"author":6,"featured_media":4580,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,17],"tags":[],"class_list":["post-4579","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-innovation","category-research"],"featured_image_urls":{"full":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",300,171,false],"thumbnail":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820-150x150.jpg",150,150,true],"medium":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",300,171,false],"medium_large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",300,171,false],"large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",300,171,false],"1536x1536":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",300,171,false],"2048x2048":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",300,171,false],"ultp_layout_landscape_large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",300,171,false],"ultp_layout_landscape":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",300,171,false],"ultp_layout_portrait":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",300,171,false],"ultp_layout_square":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",300,171,false],"newspaper-x-single-post":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",300,171,false],"newspaper-x-recent-post-big":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",300,171,false],"newspaper-x-recent-post-list-image":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",95,54,false],"web-stories-poster-portrait":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",300,171,false],"web-stories-publisher-logo":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",96,55,false],"web-stories-thumbnail":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2015\/06\/2820.jpg",150,86,false]},"author_info":{"info":["Amrita Tuladhar"]},"category_info":"Innovation<\/a> Research<\/a>","tag_info":"Research","comment_count":"0","_links":{"self":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts\/4579","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/comments?post=4579"}],"version-history":[{"count":0,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts\/4579\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/media\/4580"}],"wp:attachment":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/media?parent=4579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/categories?post=4579"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/tags?post=4579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}