Low-cost edge-emitting DFB laser arrays for DWDM communication systems implemented by bent and tilted waveguides

Hillmer, Hartmut; Klepser, B.

doi:10.1109/jqe.2004.834786

Cited by 27 publications

(10 citation statements)

References 37 publications

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“…That is to say, the seed grating fabrication errors can be practically ignored, which is very beneficial for the actual applications. In addition, it should be mentioned that bent waveguide can cause radiation loss, but fortunately, it is not severe [15], [16].…”

Section: Discussionmentioning

confidence: 99%

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Improved Single-Mode Property of DFB Semiconductor Laser Based on Sampling Technique Using Chirp Compensation

et al. 2015

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A DFB semiconductor laser with a bent waveguide and an equivalent chirp compensation based on the sampled grating technique is proposed to improve the single longitudinal mode (SLM) performance for the first time. In such a structure, the bent waveguide is used to form the basically chirped grating so that the zeroth-order resonance is greatly suppressed. However, for the Àfirst-order resonance, the equivalent chirp by designing the sampling pattern is used to compensate the chirp in the Àfirst subgrating caused by bent waveguide. As a result, the Àfirst-order resonance is enhanced, whereas the zeroth resonance is well suppressed. Since the wavelength spacing between the zeroth and Àfirst subgrating can be reduced by adopting this method, the sampling period can be increased. Therefore, the corresponding line in photomask can be enlarged as well to ease the fabrication, and the lasing wavelength accuracy can be further improved according to the theoretical analysis. Because the lasing wavelength can be controlled by changing the sampling period, the performances of the multiwavelength DFB laser array can also be improved using this method.

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Section: Discussionmentioning

confidence: 99%

“…The grating period Ã bent ðzÞ along a bent waveguidecan be expressed as a function of the tilt angle ðzÞ as follows [15], [16]:…”

Section: Grating Period Variationmentioning

confidence: 99%

Improved Single-Mode Property of DFB Semiconductor Laser Based on Sampling Technique Using Chirp Compensation

et al. 2015

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“…Different from the thin film heaters reported in other papers [20][21][22], in our novel process, the heater metal Ti is part of the P electrode and the heater contact pads. No separate step for the deposition of heater material is needed, which simplifies the fabrication of DFB lasers integrated with high efficiency heaters greatly.…”

Section: Inp Substratementioning

confidence: 93%

The fabrication of 10-channel DFB laser array by SAG technology

Zhang

Liu

Zhu

et al. 2013

Optics Communications

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“…Therefore, the additional wavelength tuning is usually required in actual applications [6], [7]. Some other methods are also proposed to fabricate the MLA, such as the asymmetric sampled grating, bent waveguide and varied waveguide width [3], [8], [9]. But both methods of bent waveguide and the varied waveguide width have very limited lasing wavelength range and are also lack of uniformities due to the different waveguide structures of each laser.…”

Section: Introductionmentioning

confidence: 99%

A Low-Cost and High-Wavelength-Precision Fabrication Method for Multiwavelength DFB Semiconductor Laser Array

Shi

Liu

et al. 2014

IEEE Photonics J.

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A new method to fabricate the multiwavelength DFB semiconductor laser array (MLA) is proposed for the first time based on sampled grating and s-bent waveguide. According to the detailed precision analysis, the lasing wavelength accuracy of the proposed structure is significantly improved. Because the common holography exposure and micrometer photolithography are used to fabricate the sampled grating and the bent waveguide in this method, the fabrication cost is very low. Therefore, it offers a suitable method for massive fabrication.

show abstract

Low-cost edge-emitting DFB laser arrays for DWDM communication systems implemented by bent and tilted waveguides

Cited by 27 publications

References 37 publications

Improved Single-Mode Property of DFB Semiconductor Laser Based on Sampling Technique Using Chirp Compensation

Improved Single-Mode Property of DFB Semiconductor Laser Based on Sampling Technique Using Chirp Compensation

The fabrication of 10-channel DFB laser array by SAG technology

A Low-Cost and High-Wavelength-Precision Fabrication Method for Multiwavelength DFB Semiconductor Laser Array

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