SPIE ITComPub Date : 2003-12-10DOI: 10.1117/12.510782
J. Shim, B. Liu, Y. Chiu, J. Piprek, J. Bowers
{"title":"Nonlinear behavior of traveling-wave electroabsorption modulators","authors":"J. Shim, B. Liu, Y. Chiu, J. Piprek, J. Bowers","doi":"10.1117/12.510782","DOIUrl":"https://doi.org/10.1117/12.510782","url":null,"abstract":"We reported the nonlinear properties of transfer curves of multiple quantum well (MQW) traveling-wave electroabsorption modulators (TW-EAMs) in analog optical link applications. A new method to extract the optical absorption coefficient of TW-EAMs was developed. By using the method, we investigated the dependence of the transfer curvs on both the input optical power and the bias voltage. The relationships between the RF output power and bias voltage as well as RF input power were studied experimentally and theoretically. A SFDR as high as 128 dB-Hz4/5 was successfully obtained by adjusting the bias level as well as optical input power at 10.0 GHz.","PeriodicalId":282161,"journal":{"name":"SPIE ITCom","volume":"5248 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129333447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
SPIE ITComPub Date : 2003-12-10DOI: 10.1117/12.510324
S. Isci, T. Bilici, A. Kurt, A. Serpengüzel
{"title":"Resonant-cavity-enhanced silicon photodetector integrated to a fiber optic coupler","authors":"S. Isci, T. Bilici, A. Kurt, A. Serpengüzel","doi":"10.1117/12.510324","DOIUrl":"https://doi.org/10.1117/12.510324","url":null,"abstract":"Morphology dependent resonances of dielectric microspheres are used for polarization insensitive optical channel dropping from an optical fiber half coupler to a silicon photodetector in the M-band. The dropped channels are observed in the elastic scattering and the transmission spectra. The highest quality factor morphology dependent resonances have a repetitive channel separation of 0.14 nm and a linewidth of 0.06 nm. The filter drops approximately 10% (0.5 dB) of the power at the resonance wavelength. The power detected by the photodiode is estimated to be approximately 3.5% of the power in the fiber.","PeriodicalId":282161,"journal":{"name":"SPIE ITCom","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122134457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
SPIE ITComPub Date : 2003-12-10DOI: 10.1117/12.512938
A. de Rossi, V. Ortiz, M. Calligaro, B. Vinter, J. Nagle, S. Ducci, V. Berger
{"title":"Third-order mode laser diode for twin photon generation","authors":"A. de Rossi, V. Ortiz, M. Calligaro, B. Vinter, J. Nagle, S. Ducci, V. Berger","doi":"10.1117/12.512938","DOIUrl":"https://doi.org/10.1117/12.512938","url":null,"abstract":"A third-order-mode-emitting laser diode is demonstrated. The AlGaAs/GaAs hetero-structure is engineered to emit a photon pair through intra-cavity modal phase-matched parametric down-conversion. Device operations and twin photon generation experimental issues are discussed.","PeriodicalId":282161,"journal":{"name":"SPIE ITCom","volume":"993 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123095552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
SPIE ITComPub Date : 2003-12-10DOI: 10.1117/12.512280
R. Simes, G. Fish, P. Abraham, Y. Akulova, C. Coldren, M. Focht, E. Hall, M. Larson, H. Marchand, P. Kozodoy, A. Dahl, P. Koh, T. Strand
{"title":"InP chip scale integration platform for high performance tunable lasers","authors":"R. Simes, G. Fish, P. Abraham, Y. Akulova, C. Coldren, M. Focht, E. Hall, M. Larson, H. Marchand, P. Kozodoy, A. Dahl, P. Koh, T. Strand","doi":"10.1117/12.512280","DOIUrl":"https://doi.org/10.1117/12.512280","url":null,"abstract":"Tunable semiconductor lasers have been listed in numerous critical technology lists for future optical communication systems. Lasers with full band tuning ranges (C or L) allow reduction of the inventory cost and simplify deployment and operation of existing systems in addition to enabling wavelength agile networking concepts in future systems. Furthermore, monolithic integration of full band tunable lasers with modulators to form complete transmitters offers the most potential for reducing system size, weight, power consumption, and cost. This paper summarizes design, fabrication technology, and performance characteristics of widely tunable CW sources and transmitters based on chip scale integration of a Sampled Grating Distributed Bragg Reflector (SG DBR) laser with a Semiconductor Optical Amplifier (SOA) and Electroabsorption (EA) or Mach Zehnder (MZ) modulator. Widely tunable CW sources based on SG-DBR lasers exhibit high fiber coupled output power (20 mW CW) and side mode suppression ratio (>40 dB), low relative intensity noise (below -140 dB/Hz) and line width (<5 MHz) across a 40 nm C-band tuning range. Characteristics of EA-modulated optical transmitters include fiber-coupled time-averaged powers in excess of 5 dBm, RF extinction ratios > 10 dB, and error-free transmission over 350 km of standard fiber at 2.5 Gb/s across a 40 nm tuning range. Monolithic integration of widely tunable lasers with MZ modulators allow for further extension of bit rate (10 Gb/s and beyond) and transmission distances through precise control of the transient chirp of the transmitter. Systematic investigations of accelerated aging confirm that reliability of these widely-tunable transmitters is sufficient for system deployment.","PeriodicalId":282161,"journal":{"name":"SPIE ITCom","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125036277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
SPIE ITComPub Date : 2003-12-10DOI: 10.1117/12.512210
C. Mirasso, Ingo Fischer, M. Peil, L. Larger
{"title":"Optoelectronic devices for optical chaos communications","authors":"C. Mirasso, Ingo Fischer, M. Peil, L. Larger","doi":"10.1117/12.512210","DOIUrl":"https://doi.org/10.1117/12.512210","url":null,"abstract":"We present results on the state of the art in optoelectronic devices for chaos generation and message encryption/extraction. We concentrate on two kind of chaos based emitters and receivers: a semiconductor laser subject to all optical feedback and operating in a non linear regime and a semiconductor laser subject to nonlinear electro optical feedback and operating in a linear regime. We show that both configuration give very good synchronization properties and are suitable for message enconding/decoding at bit rates as high as Gbit/s.","PeriodicalId":282161,"journal":{"name":"SPIE ITCom","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121699174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
SPIE ITComPub Date : 2003-12-10DOI: 10.1117/12.512588
Ching-Fuh Lin, Yi-shin Su, Fei-Hung Chu, Chia-Wei Tsai
{"title":"Broadband semiconductor optical amplifiers and tunable semiconductor lasers","authors":"Ching-Fuh Lin, Yi-shin Su, Fei-Hung Chu, Chia-Wei Tsai","doi":"10.1117/12.512588","DOIUrl":"https://doi.org/10.1117/12.512588","url":null,"abstract":"Nonidentical multiple quantum wells (MQWs) had been widely used for broadening the emission or gain bandwidth of semiconductor optical amplifiers (SOAs). However, the carrier distribution among the MQWs is not uniform, leading to nonuniform gain contributed from different QWs. Thus using nonidentical MQWs for broadband purpose is not intuitively straightforward. Several factors need to be carefully considered. Those factors include the QW sequence, electron/hole transport time across the separate confinement hetero-structure, as well as carrier capture time. In this work, we will discuss the design of MQWs for broadband SOAs. With properly designed nonidentical MQWs, the emission bandwidth could be nearly 400 nm. Also, the tuning range of semiconductor lasers could be extended to be over 200 nm.","PeriodicalId":282161,"journal":{"name":"SPIE ITCom","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132391801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
SPIE ITComPub Date : 2003-12-10DOI: 10.1117/12.512488
B. Stegmueller, C. Hanke
{"title":"Electroabsorption modulators integrated with DFB lasers based on identical active double-stack MQW-layer structure with high-frequency performance","authors":"B. Stegmueller, C. Hanke","doi":"10.1117/12.512488","DOIUrl":"https://doi.org/10.1117/12.512488","url":null,"abstract":"Electro optic modulators are key components for fiber optic transmission at data rates exceeding 10Gbit/s. The monolithic integration of an electroabsorption (EA) modulator applying the quantum confined stark effect with a distributed feedback (DFB) laser diode was demonstrated using a novel approach based on a double-stack multiple quantum well (MQW) structure. This novel approach using an identical MQW layer structure for both devices, the DFB laser diode and the EA modulator, will be described and discussed. Recently, a maximum 3dB-cutoff frequency of 25 GHz was measured. Further experimental results obtained from devices operating at 1.3 µm and 1.55 µm, respectively, exhibit the potential of these devices for high-speed data rate transmission.","PeriodicalId":282161,"journal":{"name":"SPIE ITCom","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128887708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
SPIE ITComPub Date : 2003-12-10DOI: 10.1117/12.513896
R. Michalzik, H. Roscher, M. Stach, D. Wiedenmann, Michael I. Miller, J. Broeng, A. Petersson, N. Mortensen, H. Simonsen, E. Kube
{"title":"Recent progress in short-wavelength VCSEL-based optical interconnections","authors":"R. Michalzik, H. Roscher, M. Stach, D. Wiedenmann, Michael I. Miller, J. Broeng, A. Petersson, N. Mortensen, H. Simonsen, E. Kube","doi":"10.1117/12.513896","DOIUrl":"https://doi.org/10.1117/12.513896","url":null,"abstract":"We report on recent progress in the design and application of vertical-cavity surface-emitting lasers (VCSELs) for optical interconnect applications in the 850 nm emission wavelength regime. Ongoing work toward parallel optical interconnect modules with channel data rates of 10 Gbit/s is reviewed and performance results of flip-chip integrated two-dimensional VCSEL arrays are presented. 10 Gbit/s speed as well as low thermal resistance of the lasers has been achieved. As a possible alternative to graded-index multimode fibers, we show 10 Gbit/s data transmission over 100 m length of a novel, entirely undoped multimode photonic crystal fiber. The use of VCSELs with output powers in the 10 mW range is demonstrated in a 16-channel free-space optical (FSO) module and VCSELs with even higher output power are shown to provide possible FSO connectivity up to data rates of 2.5 Gbit/s.","PeriodicalId":282161,"journal":{"name":"SPIE ITCom","volume":"1246 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131606898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
SPIE ITComPub Date : 2003-12-10DOI: 10.1117/12.512832
M. Meliga, C. Coriasso, R. Paoletti
{"title":"New materials and new structures for uncooled sources suitable for datacom and telecom applications","authors":"M. Meliga, C. Coriasso, R. Paoletti","doi":"10.1117/12.512832","DOIUrl":"https://doi.org/10.1117/12.512832","url":null,"abstract":"Optical communication systems operating at 10 Gbit/s such as 10 Gigabit Ethernet (GbE) are becoming more and more important, even in Local Area Networks (LAN) and Metropolitan Area Networks (MAN). This market requires optical transceivers of low cost, size and power consumption, driving a need for \"hot\" transmitter: uncooled DFB lasers directly modulated at 10 Gbit/s for short link (up to 10 km) and high operating temperature integrated (hybrid or monolithic) solution, like laser and electro absorption modulator at 10 Gbit/s, for longer distance (40 - 80 km). The paper describes the current status of these devices for different applications. We will report results on uncooled high speed 1300 nm DFB laser which is capable of being manufactured in high volume at the low cost demanded by the GbE market. Combining an optimized active region based on InGaAsP strained MQW (Multi Quantum Well) and a low parasitic lateral confinement region, we have fabricated 10 Gbit/s directly modulated uncooled DFB lasers which work up to 100°C (chip temperature), with eye diagram perfectly open (showing an extinction ratio > 5 dB @ 100°C), and with Bit Error Rate over 10 km without error floor up to 10-12. We will report the optimization and the results of an electro-abosorption modulator (EAM) based on quantum confined Stark effect in strained multiple quantum wells (MQWs), suitable for 40 - 80 km propagation of 10Gb/s optical signals on standard single-mode fiber at 1550 nm. The MQW structure has been designed and fabricated to obtain high extinction ratio, low insertion loss and negative chirp at 1550 nm, 60°C. Devices demonstrated a contrast ratio of above 10 dB, insertion loss of 5 dB and a negative chirp at 10 Gb/s, 60°C with a voltage swing of 2 V.","PeriodicalId":282161,"journal":{"name":"SPIE ITCom","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129539892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
SPIE ITComPub Date : 2003-12-08DOI: 10.1117/12.510622
D. Pasquariello, J. Piprek, D. Lasaosa, J. Bowers
{"title":"InP-based waveguide photodetector with integrated photon multiplication","authors":"D. Pasquariello, J. Piprek, D. Lasaosa, J. Bowers","doi":"10.1117/12.510622","DOIUrl":"https://doi.org/10.1117/12.510622","url":null,"abstract":"We report on novel InP based traveling wave amplification photodetectors exhibiting an external quantum efficiency of more than 100%. Our detectors vertically combine a bulk InGaAs photodetector ridge region with laterally confined InGaAsP quantum wells for amplification. In addition to ultra high responsivities, such detectors have the potential to also achieve high saturation power and high speed. The device physics is discussed using advanced numerical simulation.","PeriodicalId":282161,"journal":{"name":"SPIE ITCom","volume":"511 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116700634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}