Experimental analysis of temperature dependence of oscillation wavelength in quantum-well FP semiconductor lasers

Higashi, T.; Yamamoto, Tsuyoshi; Ogita, S.; Kobayashi, Mariko

doi:10.1109/3.709584

Cited by 18 publications

(9 citation statements)

References 30 publications

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“…Similarly, the estimated red-shift coefficient of the EML is 0.092 nm/K. For the DFB laser and EML, the dependences of the lasing wavelength on the chip temperature can be expressed as equation (6). From Fig.…”

Section: Determination Of Chip Temperaturementioning

confidence: 98%

“…The eye diagrams of the laser modules and single-mode fiber transmission experimental results at different chip temperatures are given in Sect. 6. It has been found that the optimal large-signal performances of the EML modules may be achieved at higher temperature.…”

Section: Introductionmentioning

confidence: 97%

“…Under this condition, the dependence of the lasing wavelength on the chip temperature is obtained in Sect. 3, as is well known, the lasing wavelength is a linear function of the chip temperature (Kitatani et al 1997;Rapp et al 1997;Kondow et al 2000;Tan et al 2004;Higashi et al 1998), and this relation can be used to determine the chip temperature for CW lasing operation (Mogg et al 2004). Section 4 shows the measurements of the small-signal frequency responses of the packaged laser modules at different chip temperatures.…”

Section: Introductionmentioning

confidence: 98%

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Measurement of small-signal and large-signal responses of packaged laser modules at high temperature

et al. 2007

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In this paper, the pulsed injection method is extended to measure the chip temperature of various packaged laser modules, such as the DFB laser modules, the FP laser modules, and the EML laser modules. An optimal injection condition is obtained by investigating the dependence of the lasing wavelength on the width and period of the injection pulse in a relatively wide temperature range. The small-signal frequency responses and large-signal performances of packaged laser modules at different chip temperature are measured. The adiabatic small-signal modulation characteristics of packaged LD are first extracted. In the large-signal measurement, the effects of chip temperature, bias current and driving signal on the performances of the laser modules are discussed. It has been found that the large-signal performances of the EML modules depend on the different red-shift speeds of the DFB and EAM sections as chip temperature varying, and the optimal characteristics may be achieved at higher temperature.

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Section: Determination Of Chip Temperaturementioning

confidence: 98%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 98%

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Measurement of small-signal and large-signal responses of packaged laser modules at high temperature

et al. 2007

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“…with increased current injection, the TM-mode absorption nulls rapidly move to short-wavelengths. However, for current over the threshold (~8 mA), the nulls gradually move back to the long-wavelength due to the thermal effect from lasing [12]. At the beginning for modulation, the incident light is spectrally aligned at the center wavelength of one among the absorption nulls with no bias current.…”

Section: External Modulation Using An Fp-ldmentioning

confidence: 99%

External Optical Modulator Using a Low-cost Fabry-Perot LD for Multicasting in a WDM-PON

Lee

2011

Journal of the Optical Society of Korea

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An external optical modulation using absorption nulls in a Fabry-Perot laser diode (FP-LD), has been proposed and experimentally demonstrated for multicasting in a WDM-PON. The center wavelengths of absorption nulls in an FP-LD move to short-wavelength rapidly by only a small current (~1 mA) injection. If the current injection is stopped, the nulls move back to the original position. Such a movement of the nulls can make the FP-LD act as an external optical modulator, which is found to modulate at a maximum modulation speed of 800 Mbps or more. For a multicasting transmitter in a WDM-PON, the proposed modulator can be cost-effectively applied to a multi-wavelength laser source with the same periodicity of the longitudinal mode. Instead of the multi-wavelength laser source, tunable-LDs are used for experiments. The 32 channel multicasting system with the proposed modulator has been demonstrated, showing power penalties of 1.53~4.15 dB at a bit error rate of 10 -9 with extinction ratios better than 14.5 dB at 622 Mbps.

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“…When a current is injected, all the absorption nulls are continuously shifted to shortwavelength by negative refi^active index change. But, for over the threshold current (ITH = -llmA), the nulls start to move in the opposite direction (to longwavelength) due to the thermal effect by lasing [10]. Here, it is worthy noting that the nulls are rapidly shifted to short-wavelength by a small amount of current fi-om 0 to 1 mA as shown in Fig.…”

mentioning

confidence: 82%

External Optical Modulator Using a Low-Cost Fabry-Perot Laser Diode for Optical Access Networks

Lee

Won²

Optical Networks and Technologies

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Abstract:We propose and demonstrate an external optical modulation method based on TE/TM-mode absorption nulls in a Multiple Quantum Well (MQW) Fabry-Perot laser diode (FP-LD). The center wavelength of the absorption nulls is rapidly shifted to short-wavelength by the small current change (~ 1mA) in the FP-LD, which can modulate optical signal with more than 10 dB of extinction ratio (ER). The shift of the center wavelength comes from the refractive index change due to anomalous dispersion and plasma effect in MQW FP-LD waveguide. Non-inverting and inverting signals are made by TE-and TM-mode absorption nulls at 155.52 Mbps and BERs for the signals are measured, respectively.

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Experimental analysis of temperature dependence of oscillation wavelength in quantum-well FP semiconductor lasers

Cited by 18 publications

References 30 publications

Measurement of small-signal and large-signal responses of packaged laser modules at high temperature

Measurement of small-signal and large-signal responses of packaged laser modules at high temperature

External Optical Modulator Using a Low-cost Fabry-Perot LD for Multicasting in a WDM-PON

External Optical Modulator Using a Low-Cost Fabry-Perot Laser Diode for Optical Access Networks

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