Spot-size converter integrated laser diodes (ss-lds)

Yoshio Itaya; Yuichi Tohmori; Hiroshi Okamoto; Osamu Mitomi; Masato Wada; Kenji Kawano; Hideki Fukano; Kiyoyuki Yokoyama; Yasumasa Suzaki; Minoru Okamoto; Yasuhiro Kondo; Isamu Kotaka; Mitsuo Yamamoto; Masaki Kohtoku; Yoshiaki Kadota; Masashi Nakao

Spot-size converter integrated laser diodes (ss-lds)

Yoshio Itaya, Yuichi Tohmori, Hiroshi Okamoto, Osamu Mitomi, Masato Wada, Kenji Kawano, Hideki Fukano, Kiyoyuki Yokoyama, Yasumasa Suzaki, Minoru Okamoto, Yasuhiro Kondo, Isamu Kotaka, Mitsuo Yamamoto, Masaki Kohtoku, Yoshiaki Kadota, Masashi Nakao

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

SUMMARY We studied three types of lasers emitting narrow beam divergence of output light: 1) a spot-size converter integrated laser diodes (SS-LDs) with a vertically tapered waveguide2) one with a laterally tapered waveguideand 3) one consisting of a small cross section of active region. We compared them with regard to their performance in coupling efficiency to a cleaved single mode fiberthreshold currentoutput powerand reliability. Both the spot-size converted integrated lasers with vertically and laterally tapered waveguide repeatedly provided low threshold currents of as low as 6 mA and low coupling loss to the fiber of 1. 2 to 2. 5 dB in two inch wafer processes. As a result of the aging testthe SS-lasers were predicted to have the same degradation rate as a conventional buried heterostructure laser. The laser having a small cross section of active layer also has low coupling loss and high efficiency up to 85°C. :.

Original language	English
Pages (from-to)	30-37
Number of pages	8
Journal	IEICE Transactions on Electronics
Volume	E80-C
Issue number	1
Publication status	Published - Jan 1 1997
Externally published	Yes

Keywords

Low cost
Multi-media
Spot-size converted lasers
Two-inch substrate

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Cite this

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title = "Spot-size converter integrated laser diodes (ss-lds)",

abstract = "SUMMARY We studied three types of lasers emitting narrow beam divergence of output light: 1) a spot-size converter integrated laser diodes (SS-LDs) with a vertically tapered waveguide2) one with a laterally tapered waveguideand 3) one consisting of a small cross section of active region. We compared them with regard to their performance in coupling efficiency to a cleaved single mode fiberthreshold currentoutput powerand reliability. Both the spot-size converted integrated lasers with vertically and laterally tapered waveguide repeatedly provided low threshold currents of as low as 6 mA and low coupling loss to the fiber of 1. 2 to 2. 5 dB in two inch wafer processes. As a result of the aging testthe SS-lasers were predicted to have the same degradation rate as a conventional buried heterostructure laser. The laser having a small cross section of active layer also has low coupling loss and high efficiency up to 85°C. :.",

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author = "Yoshio Itaya and Yuichi Tohmori and Hiroshi Okamoto and Osamu Mitomi and Masato Wada and Kenji Kawano and Hideki Fukano and Kiyoyuki Yokoyama and Yasumasa Suzaki and Minoru Okamoto and Yasuhiro Kondo and Isamu Kotaka and Mitsuo Yamamoto and Masaki Kohtoku and Yoshiaki Kadota and Masashi Nakao",

year = "1997",

month = jan,

day = "1",

language = "English",

volume = "E80-C",

pages = "30--37",

journal = "IEICE Transactions on Electronics",

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publisher = "The Institute of Electronics, Information and Communication Engineers (IEICE)",

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TY - JOUR

T1 - Spot-size converter integrated laser diodes (ss-lds)

AU - Itaya, Yoshio

AU - Tohmori, Yuichi

AU - Okamoto, Hiroshi

AU - Mitomi, Osamu

AU - Wada, Masato

AU - Kawano, Kenji

AU - Fukano, Hideki

AU - Yokoyama, Kiyoyuki

AU - Suzaki, Yasumasa

AU - Okamoto, Minoru

AU - Kondo, Yasuhiro

AU - Kotaka, Isamu

AU - Yamamoto, Mitsuo

AU - Kohtoku, Masaki

AU - Kadota, Yoshiaki

AU - Nakao, Masashi

PY - 1997/1/1

Y1 - 1997/1/1

N2 - SUMMARY We studied three types of lasers emitting narrow beam divergence of output light: 1) a spot-size converter integrated laser diodes (SS-LDs) with a vertically tapered waveguide2) one with a laterally tapered waveguideand 3) one consisting of a small cross section of active region. We compared them with regard to their performance in coupling efficiency to a cleaved single mode fiberthreshold currentoutput powerand reliability. Both the spot-size converted integrated lasers with vertically and laterally tapered waveguide repeatedly provided low threshold currents of as low as 6 mA and low coupling loss to the fiber of 1. 2 to 2. 5 dB in two inch wafer processes. As a result of the aging testthe SS-lasers were predicted to have the same degradation rate as a conventional buried heterostructure laser. The laser having a small cross section of active layer also has low coupling loss and high efficiency up to 85°C. :.

AB - SUMMARY We studied three types of lasers emitting narrow beam divergence of output light: 1) a spot-size converter integrated laser diodes (SS-LDs) with a vertically tapered waveguide2) one with a laterally tapered waveguideand 3) one consisting of a small cross section of active region. We compared them with regard to their performance in coupling efficiency to a cleaved single mode fiberthreshold currentoutput powerand reliability. Both the spot-size converted integrated lasers with vertically and laterally tapered waveguide repeatedly provided low threshold currents of as low as 6 mA and low coupling loss to the fiber of 1. 2 to 2. 5 dB in two inch wafer processes. As a result of the aging testthe SS-lasers were predicted to have the same degradation rate as a conventional buried heterostructure laser. The laser having a small cross section of active layer also has low coupling loss and high efficiency up to 85°C. :.

KW - Low cost

KW - Multi-media

KW - Spot-size converted lasers

KW - Two-inch substrate

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M3 - Article

AN - SCOPUS:0030684994

SN - 0916-8524

VL - E80-C

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JO - IEICE Transactions on Electronics

JF - IEICE Transactions on Electronics

IS - 1

ER -

Spot-size converter integrated laser diodes (ss-lds)

Abstract

Keywords

ASJC Scopus subject areas

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