InGaAsP/InP DFB laser with a new grating structure by MOCVD

Yoshida, N.; Kimura, Tatsuya; Mizuguchi, K.; Takemoto, A.; Ohkura, Y.; Murotani, T.; Kawagishi, A.

doi:10.1109/iedm.1988.32818

Cited by 2 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5. The base grating is formed by the holography technique on a uniform narrow bandgap InGaAsP layer with its composition chosen the same as the quantum well, where the floating grating technique [14] is adopted not only to guarantee a repeatable base grating index coupling strength but also to make sure that periodical part of the narrow bandgap InGaAsP layer will be completely removed. After the successive regrowth of a p-doped InP refilling layer and an n-doped wide bandgap InGaAsP layer, a second floating grating with a sampling period is formed through a standard photolithography and etching process, with part of the n-doped wide bandgap InGaAsP layer completely removed in each of the sampling period.…”

Section: B Structurementioning

confidence: 99%

Sampled Grating DFB Laser Array by Periodic Injection Blocking

Bao

Zhao

et al. 2013

IEEE J. Select. Topics Quantum Electron.

View full text Add to dashboard Cite

We present a novel multiwavelength laser array with a sampled grating formed by periodically loaded n-doped injection blocking layer on top of the uniform base grating. With an optimized design of the sampled grating as well as the laser operation conditions, all the even order, including the zeroth-order reflections, can be effectively suppressed, leaving only the first-order reflection wavelength to lase. Unlike in the conventional sampled grating where part of the base grating will have to be removed, the whole base grating is retained in the proposed structure; hence, the side-mode suppression ratio will not be jeopardized due to the weakened grating coupling strength. As an example, an array of 12 lasers has been designed to cover a wavelength range from 1542 to 1560 nm.

show abstract

Section: B Structurementioning

confidence: 99%