OPTIMIZATION OF GRATING DUTY FACTOR INGAIN-COUPLED DFB LASERS WITH ABSORPTIVE GRATING - ANALYSIS AND FABRICATION

被引：16

作者：

CAO, HL ^{[1
]}

LUO, Y ^{[1
]}

NAKANO, Y ^{[1
]}

TADA, K ^{[1
]}

DOBASHI, M ^{[1
]}

HOSOMATSU, H ^{[1
]}

机构：

[1] OPT MEASUREMENT TECHNOL DEV CO LTD,MUSASHINO,TOKYO 180,JAPAN

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 1992年 / 4卷 / 10期

关键词：

D O I：

10.1109/68.163745

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Grating duty factor strongly affects the performance of gain-coupled (GC) distributed feedback (DFB) laser diodes with an absorptive grating. Through numerical analysis we have found an optimum value in the duty factor for their low threshold operation. The minimum threshold gain achievable at this optimum duty factor is found to be almost independent of the order of the grating. According to this prediction, we have fabricated GaAlAs/GaAs GC DFB lasers with a third order absorptive grating where the grating duty factor has been made close to the theoretical optimum value. In 200 mum-long devices with as-cleaved both facets, low CW threshold current of 25 mA, external efficiency of 0.5 mW/mA, and SMSR as high as 45 dB have been obtained, which is qualitatively consistent with the analysis. High yield of single mode oscillation seems the fruits of the gain coupling.

引用

页码：1099 / 1102

页数：4

共 18 条

[1] 1.55 MU-M GAIN-COUPLED QUANTUM-WELL DISTRIBUTED FEEDBACK LASERS WITH HIGH SINGLE-MODE YIELD AND NARROW LINEWIDTH [J].

BORCHERT, B ;

DAVID, K ;

STEGMULLER, B ;

GESSNER, R ;

BESCHORNER, M ;

SACHER, D ;

FRANZ, G .

IEEE PHOTONICS TECHNOLOGY LETTERS, 1991, 3 (11) :955-957

[2]

CAO H, UNPUB

[3] COUPLING-COEFFICIENTS IN GAIN-COUPLED DFB LASERS - INHERENT COMPROMISE BETWEEN COUPLING STRENGTH AND LOSS [J].

DAVID, K ;

BUUS, J ;

MORTHIER, G ;

BAETS, R .

IEEE PHOTONICS TECHNOLOGY LETTERS, 1991, 3 (05) :439-441

[4] GAIN-COUPLED DFB LASERS VERSUS INDEX-COUPLED AND PHASE-SHIFTED DFB LASERS - A COMPARISON BASED ON SPATIAL HOLE BURNING CORRECTED YIELD [J].

DAVID, K ;

MORTHIER, G ;

VANKWIKELBERGE, P ;

BAETS, RG ;

WOLF, T ;

BORCHERT, B .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1991, 27 (06) :1714-1723

[5] YIELD ANALYSIS OF NON-AR-COATED DFB LASERS WITH COMBINED INDEX AND GAIN COUPLING [J].

DAVID, K ;

MORTHIER, G ;

VANKWIKELBERGE, P ;

BAETS, R .

ELECTRONICS LETTERS, 1990, 26 (04) :238-239

[6]

DAVID K, 1991, 8TH INT C INT OPT OP

[7] A SINGLE-WAVELENGTH DFB STRUCTURE WITH A SYNCHRONIZED GAIN PROFILE [J].

HAMASAKI, J ;

IWASHIMA, T .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1988, 24 (09) :1864-1872

[8] COUPLED-WAVE THEORY OF DISTRIBUTED FEEDBACK LASERS [J].

KOGELNIK, H ;

SHANK, CV .

JOURNAL OF APPLIED PHYSICS, 1972, 43 (05) :2327-+

[9] FABRICATION AND CHARACTERISTICS OF GAIN-COUPLED DISTRIBUTED FEEDBACK SEMICONDUCTOR-LASERS WITH A CORRUGATED ACTIVE LAYER [J].

LUO, Y ;

NAKANO, Y ;

TADA, K ;

INOUE, T ;

HOSOMATSU, H ;

IWAOKA, H .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1991, 27 (06) :1724-1731

[10] ULTRALOW CHIRPING SHORT OPTICAL PULSE (16-PS) GENERATION IN GAIN-COUPLED DISTRIBUTED FEEDBACK SEMICONDUCTOR-LASERS [J].

LUO, Y ;

TAKAHASHI, R ;

NAKANO, Y ;

TADA, K ;

KAMIYA, T ;

HOSOMATSU, H ;

IWAOKA, H .

APPLIED PHYSICS LETTERS, 1991, 59 (01) :37-39

← 1 2 →